GTS DURATEK INC
SC 13D/A, 1998-02-09
HELP SUPPLY SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. 2)

                                GTS Duratek, Inc.
                                (Name of Issuer)

                     Common Stock, Par Value $0.01 Per Share
                         (Title of Class of Securities)

                                    36237J107
                                 (CUSIP Number)

                                Daniel D'Aniello
                                The Carlyle Group
                         1001 Pennsylvania Avenue, N.W.
                                 Suite 220 South
                              Washington D. C. 2004
                                 (202) 347-2626
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                January 28, 1998
             (Date of Event which Requires Filing of this Statement)

                                       ____________________________________
If the filing person has previously  filed a statement on Schedule 13G to report
the acquisition  which is the subject of this  Schedule 13D,  and is filing this
schedule because of Rule 13d-1(b) (3) or (4), check the following box[ ].
    


Check the following  box if a fee is being paid with this  statement [ ]. (A fee
is not required only if the reporting  person:  (1) has a previous  statement on
file  reporting  beneficial  ownership of more than five percent of the class of
securities  described  in Item 1;  and (2) has  filed  no  amendment  subsequent
thereto reporting beneficial ownership of less than five percent of such class.)
(See Rule 13d-7.)

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).
 
                           Exhibit Index is on Page 27

                               Page 1 of 49 Pages

<PAGE>


________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  Carlyle Partners II, L.P.
                  IRS # 51-10357731
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                                (a)      [x ]
                                                                (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                  [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                        0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power              7,850,930 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                   0 Shares
 ing Person                _____________________________________________________
   With          (10)      Shared Dispositive Power         3,635,293 Shares
                                                             (See Item 5(a))
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                            7,850,930 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate  Amount in  Row  (11) Excludes Certain
                  Shares                                                 [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  41.8%(2)
________________________________________________________________________________
         (14)     Type of Reporting Person

                           PN

___________________________

(1)  Represents the 900,167 shares currently beneficially owned by the Reporting
     Person together with: (i) the 2,215,800  shares  receivable upon conversion
     of  66,474  shares  of  Convertible   Preferred  Stock;  (ii)  the  519,326
     newly-issued  shares  receivable  from the Issuer upon  exercise of certain
     options;  and  (iii)  shares  deemed  beneficially  owned  pursuant  to the
     Agreements  Among  Partnerships  entered into among the Reporting  Persons.
     (See Items 4, 5 and 7).

(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to item 5(a)

                               Page 2 of 49 Pages

<PAGE>

________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  Carlyle Partners III, L.P.
                  IRS # 51-0369721
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                                (a)      [x ]
                                                                (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuan
                  to Items 2(d) or 2(e)                                  [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                        0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power              7,850,930 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                   0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power           261,779 Shares
                                                              (See Item 5(a))
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                            7,850,930 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate  Amount  in  Row (11) Excludes Certain
                  Shares                                                 [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  41.8%(2)
________________________________________________________________________________
         (14)     Type of Reporting Person

                           PN

___________________________

(1)  Represents the 64,817 shares currently  beneficially owned by the Reporting
     Person together with: (i) the 159,567 shares  receivable upon conversion of
     4,787 shares of Convertible  Preferred Stock; (ii) the 37,395  newly-issued
     shares  receivable  from the Issuer upon exercise of certain  options;  and
     (iii) shares deemed  beneficially  owned pursuant to the  Agreements  Among
     Partnerships entered into among the Reporting Persons.  (See Items 4, 5 and
     7).


(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to item 5(a).

                               Page 3 of 49 Pages

<PAGE>

________________________________________________________________________________

         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  Carlyle International Partners II, L.P.
                  IRS # N/A
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Cayman Islands
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                       0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power             2,391,331 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                  0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power        2,391,331 Shares(1)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                           2,391,331 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate  Amount in  Row (11) Excludes Certain
                  Shares                                                 [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  12.7%(2)
________________________________________________________________________________
         (14)     Type of Reporting Person

                           PN

___________________________

(1)  Represents the 592,143 shares currently beneficially owned by the Reporting
     Person together with: (i) the 1,457,567  shares  receivable upon conversion
     of 43,727  shares of  Convertible  Preferred  Stock;  and (ii) the  341,621
     newly-issued  shares  receivable  from the Issuer upon  exercise of certain
     options. (See Items 4, 5 and 7).

(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to item 5(a).

                               Page 4 of 49 Pages

<PAGE>

________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  Carlyle International Partners III, L.P.
                  IRS # N/A
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Cayman Islands
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                       0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power               304,982 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                  0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power          304,982 Shares(1)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                             304,982 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in  Row (11) Excludes Certain 
                  Shares                                                [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  1.6%(2)
________________________________________________________________________________
         (14)      Type of Reporting Person

                           PN

___________________________

(1)  Represents the 75,515 shares currently  beneficially owned by the Reporting
     Person together with: (i) the 185,900 shares  receivable upon conversion of
     5,577  shares  of  Convertible   Preferred   Stock;  and  (ii)  the  43,567
     newly-issued  shares  receivable  from the Issuer upon  exercise of certain
     options. (See Items 4, 5 and 7).

(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to Item 5(a).

                               Page 5 of 49 Pages


<PAGE>

________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  C/S International Partners
                  IRS # N/A
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Cayman Islands
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                       0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power             1,087,245 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                  0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power        1,087,245 Shares(1)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person
  
                                                           1,087,245 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in  Row (11) Excludes Certain
                  Shares                                                [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  5.8%(2)
________________________________________________________________________________
         (14)     Type of Reporting Person

                           PN

___________________________

(1)  Represents the 269,224 shares currently beneficially owned by the Reporting
     Person together with: (i) the 662,700 shares  receivable upon conversion of
     19,881  shares  of  Convertible  Preferred  Stock;  and  (ii)  the  155,321
     newly-issued  shares  receivable  from the Issuer upon  exercise of certain
     options. (See Items 4, 5 and 7).

(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to Item 5(a).

                               Page 6 of 49 Pages

<PAGE>


________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  Carlyle-GTSD Partners, L.P.1
                  IRS # 52-1909589
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  N/A
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                      0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power                    0 Shares
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                 0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Pow                 0 Shares
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                                  0 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in Row (11) Excludes Certain
                  Shares                                               [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  0.0%
________________________________________________________________________________
         (14)     Type of Reporting Person

                           PN
___________________________

(1)  Amended to reflect the distribution of securities by Carlyle-GTSD Partners,
     L.P.  ("CP-GTSD")  to its partners  upon the  dissolution  of CP-GTSD.  The
     limited  partners  elected  to  dissolve  CP-GTSD on  January  24,  1998 in
     accordance with the terms of the  partnership  agreement and a distribution
     in kind of the securities of the Issuer (as defined herein) was made to the
     partners of CP-GTSD on January 28,  1998.  Most of the  partners of CP-GTSD
     are not affiliates of the Reporting Persons (as defined herein).

                               Page 7 of 49 Pages

<PAGE>


________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  Carlyle-GTSD Partners II, L.P.
                  IRS # 52-1911051
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  N/A
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuan
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                       0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power               170,300 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                  0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power          170,300 Shares(1)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                             170,300 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in  Row (11) Excludes Certain
                  Shares                                                [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  0.9%(2)
________________________________________________________________________________
         (14)     Type of Reporting Person

                           PN

___________________________

(1)  Represents the 42,171 shares currently  beneficially owned by the Reporting
     Person  together  with: (i) 103,800 shares  receivable  upon  conversion of
     3,114 shares of Convertible  Preferred Stock; and (ii) 24,329  newly-issued
     shares  receivable from the Issuer upon exercise of certain  options.  (See
     Items 4, 5, and 7).

(2)  Percentages   calculated  based  on  18,766,565   shares  which  number  is
     calculated as described in the footnotes to Item 5(a).

                               Page 8 of 49 Pages

<PAGE>

________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  T.C. Group, L.L.C. (d/b/a The Carlyle Group)
                  IRS # 54-1686957
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                      0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power            7,854,539 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                 0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power       7,854,539 Shares(1)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                          7,854,539 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in  Row (11) Excludes Certain
                  Shares                                                [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  41.9%(2)
________________________________________________________________________________
         (14)      Type of Reporting Person

                           00 (Limited Liability Company)

___________________________

(1)  Represents (a) in connection with the dissolution of Carlyle-GTSD Partners,
     L.P. and the  distribution  to the Reporting  Person as general  partner of
     that limited partnership:  (i) the 885 shares currently beneficically owned
     by the Reporting Person,  (ii) the 2,200 shares receivable by the Reporting
     Person upon  conversion of 66 shares of Convertible  Preferred  Stock,  and
     (iii) the 524 newly-issued  shares  receivable by the Reporting Person from
     the Issuer upon the  exercise  of certain  options;  together  with (b) the
     1,944,037  shares currently  beneficially  owned by the Reporting Person as
     general partner of the  Partnerships,  (ii) the 4,785,334 shares receivable
     by the  Partnerships  upon  conversion  of  143,569  shares of  Convertible
     Preferred Stock, and (iii) the 1,121,559  newly-issued shares receivable by
     the  Partnerships  from the Issuer upon exercise of certain  options.  (See
     Items 4, 5 and 7).

(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to Item 5(a).

                               Page 9 of 49 Pages

<PAGE>


________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  TCG Holdings, L.L.C.
                  IRS # 54-1686011
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                              (a)      [x ]
                                                              (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Po                         0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Share                          7,854,539 Shares(1)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositiv                        0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared                         7,854,539 Shares(1)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                          7,854,539 Shares(1)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount in Row (11) Excludes Certain
                  Shares                                               [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  41.9%(2)
________________________________________________________________________________
         (14)      Type of Reporting Person

                           00 (Limited Liability Company)

___________________________

(1)  Represents  the  1,944,922  shares  currently  beneficially  owned  by  the
     Reporting  Person as the  controlling  member of T.C.  Group,  L.L.C.,  the
     general  partner of the  Partnerships  ("TC Group")  together with: (i) the
     4,787,534  shares  receivable  by  the  Partnerships  or by TC  Group  upon
     conversion of 143,635 shares of Convertible  Preferred  Stock; and (ii) the
     1,122,083 newly-issued shares receivable by the Partnerships or by TC Group
     from the Issuer upon exercise of certain options. (See Items 4, 5 and 7).

(2)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to Item 5(a).

                              Page 10 of 49 Pages

<PAGE>

________________________________________________________________________________

         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  CP II Investment Holdings, L.L.C.(1)
                  IRS # 52-2033497
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuan
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                      0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power               58,241 Shares(2)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                 0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power          58,241 Shares(2)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                             58,241 Shares(2)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in  Row (11) Excludes Certain
                  Shares                                                [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  0.3%(3)
________________________________________________________________________________
         (14)     Type of Reporting Person

                           00 (Limited Liability Company)

___________________________

(1)  The Reporting  Person is a limited partner of Carlyle-GTSD  Partners,  L.P.
     and  received  the  securities  of  the  Issuer  in  connection   with  the
     dissolution of that  partnership.  The Reporting Person is controlled by CP
     II Holdings, L.L.C., an affiliate of TCG Holdings, L.L.C.

(2)  Represents the 14,173 shares currently  beneficially owned by the Reporting
     Person  together with: (i) the 35,700 shares  receivable upon conversion of
     1,071  shares  of  Convertible   Preferred   Stock;   and  (ii)  the  8,368
     newly-issued  shares  receivable  from the Issuer upon  exercise of certain
     options. (See Items 4, 5 and 7).

(3)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to item 5(a).

                              Page 11 of 49 Pages

<PAGE>

________________________________________________________________________________
         (1)      Names of Reporting Persons
                  S.S. or I.R.S. Identification Nos. of Above Persons

                  CP II Holdings, L.L.C.(1)
                  IRS # 52-2033495
________________________________________________________________________________
         (2)      Check the Appropriate Box if a Member of a Group
                                                               (a)      [x ]
                                                               (b)      [  ]
________________________________________________________________________________
         (3)      SEC Use Only
________________________________________________________________________________
         (4)      Source of Funds
                  AF
________________________________________________________________________________
         (5)      Check if Disclosure of Legal Proceedings is Required Pursuant
                  to Items 2(d) or 2(e)                                 [  ]
________________________________________________________________________________
         (6)      Citizenship or Place of Organization
                  Delaware
________________________________________________________________________________
 Number of        (7)      Sole Voting Power                      0 Shares
Shares Bene-               _____________________________________________________
  ficially        (8)      Shared Voting Power               58,241 Shares(2)
 Owned by                  _____________________________________________________
Each Report-      (9)      Sole Dispositive Power                 0 Shares
 ing Person                _____________________________________________________
   With           (10)     Shared Dispositive Power          58,241 Shares(2)
________________________________________________________________________________
         (11)     Aggregate Amount Beneficially Owned by Each Reporting Person

                                                             58,241 Shares(2)
________________________________________________________________________________
         (12)     Check if the Aggregate Amount  in  Row (11) Excludes Certain 
                  Shares                                                [  ]
________________________________________________________________________________
         (13)     Percent of Class Represented by Amount in Row (11)

                  0.3%(3)
________________________________________________________________________________
         (14)      Type of Reporting Person

                           00 (Limited Liability Company)

___________________________

(1)  The  Reporting  Person owns the  controlling  interest in CP II  Investment
     Holdings, L.L.C. and is an affiliate of TCG Holdings, L.L.C.

(2)  Represents the 14,173 shares currently  beneficially owned by the Reporting
     Person as the controlling member of CP II Investment together with: (i) the
     35,700  shares  receivable  by CP II  Investment  upon  conversion of 1,071
     shares of  Convertible  Preferred  Stock;  and (ii) the 8,368  newly-issued
     shares  receivable  by CP II  Investment  from the Issuer upon  exercise of
     certain options. (See Items 4, 5 and 7).

(3)  Percentages  calculated  based on 18,766,565  shares which is calculated as
     described in the footnotes to Item 5(a).

                              Page 12 of 49 Pages

<PAGE>


     This  Amendment  No.  2  (this  "Amendment")  amends  and  supplements  the
Statement on Schedule 13D dated January 24, 1995, as amended and supplemented by
Amendment No. 1 dated December 22, 1995, (as amended,  the "Schedule")  filed by
the  Reporting  Persons in relation  to the Common  Stock of the Issuer (as such
terms are defined below).  This Amendment is the first  electronic  Amendment to
the Schedule.


     The purpose of this Amendment is to reflect the  distribution of securities
by Carlyle-GTSD Partners,  L.P. ("CP-GTSD") to its partners upon the dissolution
of CP-GTSD.  On January 24,  1998,  the limited  partners of CP-GTSD  elected to
dissolve  CP-GTSD  in  accordance  with the terms of the  agreement  of  limited
partnership of CP-GTSD (the "Limited Partnership  Agreement"),  and TC Group (as
defined below), as the General Partner of CP-GTSD, has undertaken to wind up the
affairs of CP-GTSD. In connection  therewith,  TC Group caused a distribution in
kind of most of the assets of CP-GTSD,  consisting  of securities of the Issuer,
in accordance with the terms of the Limited Partnership Agreement and has caused
a pro rata  distribution of all of the securities of the Issuer owned by CP-GTSD
to the partners of CP-GTSD, two of whom (TC Group and CP II Investment Holdings,
L.L.C.) are themselves  Reporting Persons. The other partners of CP-GTSD are not
affiliates  of any of the  Reporting  Persons.  The  Reporting  Persons have not
otherwise disposed of or acquired any additional  securities of the Issuer. This
Amendment also reflects certain  reallocations  among the Reporting Persons made
since the filing of Amendment No. 1 to the Schedule,  which reallocations do not
affect the aggregate ownership by the Reporting Persons in the securities of the
Issuer.


Item 1. Security and Issuer

     The title of the class of equity  securities to which this Schedule relates
is the common  stock,  par value $0.01 per share (the  "Common  Stock"),  of GTS
Duratek,  Inc.,  a  Delaware  corporation  (the  "Issuer").  The  address of the
principal executive offices of the Issuer is 10100 Old Columbia Road,  Columbia,
MD 21406.

Item 2. Identity and Background

     (a) - (c),  (f) The names of the persons  filing  this  Schedule  are:  (i)
Carlyle  Partners II,  L.P.,  a Delaware  limited  partnership  ("CP II");  (ii)
Carlyle  Partners III, L.P., a Delaware limited  partnership  ("CP III");  (iii)
Carlyle  International  Partners  II, L.P., a Cayman  Islands  exempted  limited
partnership ("CIP II"); (iv) Carlyle International  Partners III, L.P., a Cayman
Islands  exempted  limited   partnership  "CIP  III");  (v)  C/S  International
Partners,  a Cayman Islands  partnership  ("C/S");  (vi) Carlyle-GTSD  Partners,
L.P., a Delaware limited partnership  ("CP-GTSD");  (vii) Carlyle-GTSD  Partners
II, L.P., a Delaware limited partnership ("CP-GTSD II"; and collectively with CP
II,  CP III,  CIP II,  CIP III,  C/S,  and  CP-GTSD,  referred  to herein as the
"Partnerships");  (viii) TC Group, L.L.C., a Delaware limited liability company,
doing business as The Carlyle Group ("TC Group");  (ix) TCG Holdings,  L.L.C., a
Delaware  limited  liability  company  ("TCG");  (x) CP II Investment  Holdings,
L.L.C., a Delaware limited liability  company ("CP II Investment");  and (xi) CP
II Holdings, L.L.C., a Delaware limited liability company ("CP II Holdings"; and
collectively with the Partnerships, TC Group, TCG, and CP II Investment referred
to herein as the "Reporting Persons").

                              Page 13 of 49 Pages


<PAGE>

     TC Group is the sole general partner of CP II, CP III,  CP-GTSD and CP-GTSD
II.  TC  Group  is  the  managing   general   partner  and  Carlyle   Investment
Administration  Limited,  a Cayman  Islands  exempted  company  "CIA"),  is the
administrative  general  partner of CIP II and CIP III. TC Group is the managing
general  partner  and Soros  Capital  Offshore  Partners  LDC, a Cayman  Islands
limited duration company ("SCOP"), is a co-general partner of C/S.

     TCG is a member of TC Group and holds a  controlling  interest in TC Group.
CP II Holdings is a member of CP II Investment and holds a controlling  interest
in CP II Investment.  The members of TCG and of CP II Holdings and the executive
officers of TC Group and of CP II Holdings are David M.  Rubenstein,  William E.
Conway, Jr., Daniel A. D'Aniello,  Richard G. Darman,  James A. Baker III, Frank
C.  Carlucci  III,  David  Dupree,  and  Alan M.  Holt  (collectively,  the "TCG
Principals"). Each TCG Principal is a citizen and resident of the United States.

     The  principal  business of CP II, CP III,  CIP II, CIP III,  and C/S is to
acquire  control   investments  in  connection  with,  among  other  situations,
management   buyouts,   restructurings,   bankruptcies  and  to  make  strategic
investments in private and public companies.  The principal  business of CP-GTSD
and  CP-GTSD II is to invest in the  securities  of the  Issuer.  The  principal
business  of TC Group,  TCG,  SCOP,  CP II  Investment,  and CP II  Holdings  is
merchant banking. The principal business of CIA is partnership administration.

     The principal  business address of TC Group, TCG, CP-GTSD,  and CP-GTSD II,
is c/o The  Carlyle  Group,  1001  Pennsylvania  Avenue  N.W.,  Suite 220 South,
Washington D.C. 20004.  The principal  business  address of CP II, CP III, CP II
Investment,  and CP II Holdings is Delaware Trust  Building,  900 Market Street,
Suite 200, Wilmington, Delaware 19801. The principal business address of CIP II,
CIP III and C/S is Coutts & Co.,  P.O. Box 707,  Grand Cayman  Islands,  British
West Indies.  The  principal  business  address of CIA is c/o Maples and Calder,
P.O. Box 309, George Town,  Grand Cayman,  Cayman Islands,  British West Indies.
The principal  business address of SCOP is c/o Curacao Company NV, Grand Cayman,
British West Indies.

     (d) and (e). During the last five years,  none of the Reporting Persons has
(i) been convicted in a criminal  proceeding  (excluding  traffic  violations or
similar  misdemeanors)  or (ii) been a party to a civil proceeding of a judicial
or  administrative  body  of  competent  jurisdiction  and as a  result  of such
proceeding  was or is subject to a  judgment,  decree or final  order  enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration.


     CP II  Investment  is one of the limited  partners and TC Group is the sole
General Partner of CP-GTSD. On January 24, 1998, the limited partners of CP-GTSD
elected  to  dissolve  CP-GTSD  in  accordance  with the  terms  of the  Limited
Partnership  Agreement and TC Group, as the General  Partner,  has undertaken to
wind up the affairs of CP-GTSD. In connection therewith, on January 28, 1998, TC
Group caused a distribution in kind of most of the assets of CP-GTSD, consisting
of the  securities of the Issuer,  in  accordance  with the terms of the Limited
Partnership  Agreement  and has  caused  a pro rata  distribution  of all of the
securities  of the Issuer  owned by CP-GTSD to the  partners of CP-GTSD,  two of
whom (TC Group and CP II Investment) are themselves Reporting Persons. The other
partners of CP-GTSD are not  affiliates  of any of the  Reporting  Persons.  The
Reporting  Persons have not  otherwise  disposed of or acquired  any  additional
securities of the Issuer.

                              Page 14 of 49 Pages

<PAGE>


     No  consideration  has been paid by the partners of CP-GTSD or by any other
person in connection  with the  distribution  of the securities of the Issuer by
CP-GTSD.

Item 4.  Purpose of Transaction.

     The distribution  described in the response to Item 3 was occasioned by the
dissolution  of CP-GTSD.  The  Reporting  Persons as a group have not  otherwise
disposed of or acquired  any  additional  securities  of the Issuer.  Before the
distribution described in Item 3, CP II Investment was not a beneficial owner of
any of the securities of the Issuer.

     Each  Reporting  Person may,  subject to the  continuing  evaluation of the
factors  discussed  herein,  acquire from time to time additional  shares of the
Common  Stock  or other  securities  of the  Issuer  in the  open  market  or in
privately negotiated transactions, by exchange offer or otherwise.  Depending on
the factors  discussed  herein,  each  Reporting  Person may, from time to time,
retain or sell all or a portion  of its  holdings  of the  shares of the  Common
Stock in the open market or in privately  negotiated  transactions.  Any actions
that any Reporting  Person might undertake will be dependent upon such Reporting
Person's  review  of  numerous  factors,  including,  among  other  things,  the
availability  of shares of the Common Stock for purchase and the price levels of
such shares;  general market and economic conditions;  ongoing evaluation of the
Issuer's business  operations,  prospects and its need for capital; the relative
attractiveness of alternative business and investment opportunities; the actions
and  views of the  management  and the Board of  Directors  of the  Issuer  (the
"Board"); and other future developments.

     Pursuant to the Amended and Restated  Agreement Among  Partnerships (CP II)
dated as of November 6, 1995 (the "CP II Agreement Among Partnerships"),  by and
among the Partnerships,  the Partnerships agreed that CP II shall be entitled to
designate  as nominees  for  election to the  Issuer's  Board all but one of the
directors that the Partnerships are entitled to elect as holders of the Issuer's
voting stock and the  Partnerships  further  agreed to elect such persons to the
Issuer's Board.  Pursuant to the Agreement Among  Partnerships (CP III) dated as
of November 6, 1995 (the "CP III  Agreement  Among  Partnerships";  and together
with  the  CP  II  Agreement  Among  Partnerships  referred  to  herein  as  the
"Agreements  Among   Partnerships"),   by  and  among  the   Partnerships,   the
Partnerships  agreed that CP III shall be entitled to designate  one nominee for
election to the Issuer's Board and the Partnerships further agreed to elect such
nominee  to the  Issuer's  Board.  The rights to  nominate  persons to the Board
pursuant to the CP II  Agreement  Among  Partnerships  and the CP III  Agreement
Among   Partnerships   shall  continue  until  such  time  as  the  Partnerships
collectively  beneficially own shares of the Issuer's voting stock  representing
less than 20% of the votes entitled to be cast for members of the Board.

     Although the foregoing reflects activities  presently  contemplated by each
Reporting Person with respect to the Issuer,  the foregoing is subject to change
at any time.

                              Page 15 of 49 Pages

<PAGE>

     Other than as described above, the Reporting  Persons have no present plans
or  proposals  which relate to or would  result in: (a) the  acquisition  by any
person of additional  securities of the Issuer, or the disposition of securities
of the Issuer;  (b) an extraordinary  corporate  transaction,  such as a merger,
reorganization or liquidation,  involving the Issuer or any of its subsidiaries;
(c) a sale or  transfer  of a material  amount of assets of the Issuer or any of
its  subsidiaries;  (d) any change in the  present  Board or  management  of the
Issuer,  including  any  plans or  proposals  to  change  the  number or term of
directors  or to fill any  existing  vacancies  on the Board;  (e) any  material
change in the present  capitalization or dividend policy of the Issuer;  (f) any
other  material  change in the  Issuer's  business or corporate  structure;  (g)
changes in the Issuer's  certificate of incorporation or bylaws or other actions
which may impede the  acquisition  of control of the Issuer by any persons;  (h)
causing a class of  securities  of the  Issuer to be  delisted  from a  national
securities exchange or to cease to be authorized to be quoted in an inter-dealer
quotation system of a registered national securities association; (i) a class of
equity   securities  of  the  Issuer   becoming   eligible  for  termination  of
registration  pursuant to Section  12(g)(4) of the  Securities  Exchange  Act of
1934, as amended; or (j) any action similar to any of those enumerated above.






                  [remainder of page intentionally left blank]






















                              Page 16 of 49 Pages

<PAGE>


Item 5. Interest in Securities of the Issuer


     (a) Shares of Common Stock Beneficially Owned by the Reporting Persons

<TABLE>

- ----------------------------------------------------------------------------------------------------------------
<CAPTION>
 
                                                             Right to
                                                              Common
                                                               Stock
                                                               Upon
                                                            Conversion          Right to
                                                                of           Purchase Common
                                                            Convertible      Stock from the          Total
                                            Common           Preferred           Issuer            Beneficial
                                             Stock             Stock                               Ownership
- ---------------------------------------------------------------------------------------------------------------
<S>                                         <C>              <C>                  <C>               <C>      
CP II(1)                                    900,167          2,215,800            519,326           3,635,293
- ---------------------------------------------------------------------------------------------------------------
CP III                                       64,817            159,567             37,395             261,779
- ---------------------------------------------------------------------------------------------------------------
CIP II                                      592,143          1,457,567            341,621           2,391,331
- ---------------------------------------------------------------------------------------------------------------
CIP III                                      75,515            185,900             43,567             304,982
- ---------------------------------------------------------------------------------------------------------------
C/S                                         269,224            662,700            155,321           1,087,245
- ---------------------------------------------------------------------------------------------------------------
CP-GTSD                                           0                  0                  0                   0
- ---------------------------------------------------------------------------------------------------------------
CP-GTSD II                                   42,171            103,800             24,329             170,300
- ---------------------------------------------------------------------------------------------------------------
Partnerships                              1,944,037          4,785,334          1,121,559           7,850,930
- ---------------------------------------------------------------------------------------------------------------
TC Group                                  1,944,922          4,787,534          1,122,083           7,854,539
- ---------------------------------------------------------------------------------------------------------------
TCG                                       1,944,922          4,787,534          1,122,083           7,854,539
- ---------------------------------------------------------------------------------------------------------------
CP II Investment                             14,173             35,700              8,368              58,241
- ---------------------------------------------------------------------------------------------------------------
CP II Holdings                               14,173             35,700              8,368              58,241
===============================================================================================================
Reporting Persons                         1,959,095          4,823,234          1,130,451           7,912,780
===============================================================================================================
</TABLE>

- ------------
(1)  See Item 5(b) for a discussion of CP II's and CP III's beneficial ownership
     as a party to the Agreements Among Partnerships.






                              Page 17 of 49 Pages


<PAGE>



     5(a)  (continued)  Approximate  Percentage  of Common  Stock of the  Issuer
Beneficially Owned(1)

<TABLE>

- -----------------------------------------------------------------------------------------------------------------
 <CAPTION>
                                                          Right to
                                                           Common
                                                           Stock
                                                            Upon
                                                         Conversion         Right to
                                                             of         Purchase Common
                                                        Convertible     Stock from the         Total
                                          Common         Preferred           Issuer          Beneficial
                                           Stock           Stock                             Ownership
- -----------------------------------------------------------------------------------------------------------------
<S>                                        <C>              <C>                <C>              <C>  
CP II2                                     4.8%             11.8%              2.8%             19.4%
- -----------------------------------------------------------------------------------------------------------------
CP III                                     0.3%              0.9%              0.2%              1.4%
- -----------------------------------------------------------------------------------------------------------------
CIP II                                     3.2%              7.8%              1.8%             12.7%
- -----------------------------------------------------------------------------------------------------------------
CIP III                                    0.4%              1.0%              0.2%              1.6%
- -----------------------------------------------------------------------------------------------------------------
C/S                                        1.4%              3.5%              0.8%              5.8%
- -----------------------------------------------------------------------------------------------------------------
CP-GTSD                                      0%                0%                0%                0%
- -----------------------------------------------------------------------------------------------------------------
CP-GTSD II                                 0.2%              0.6%              0.1%              0.9%
- -----------------------------------------------------------------------------------------------------------------
Partnerships                              10.4%             25.5%              6.0%            41.8 %
- -----------------------------------------------------------------------------------------------------------------
TC Group                                  10.4%             25.5%              6.0%            41.9 %
- -----------------------------------------------------------------------------------------------------------------
TCG                                       10.4%             25.5%              6.0%            41.9 %
- -----------------------------------------------------------------------------------------------------------------
CP II Investment                           0.1%              0.2%              0.0%              0.3%
=================================================================================================================
CP II Holdings                             0.1%              0.2%              0.0%              0.3%
=================================================================================================================
Reporting Persons                         10.4%             25.7%              6.0%             42.2%
=================================================================================================================
</TABLE>






- ------------

(1)  All percentages calculated based on 18,766,565 shares which equal the total
     shares of Common Stock reported as presently  issued and outstanding on the
     Issuer's  latest Form 10-Q plus shares of Common  Stock that will be issued
     upon conversion of shares of Convertible Preferred Stock of the Issuer that
     are beneficially  owned or deemed to be beneficially owned by the Reporting
     Persons in the aggregate and the aggregate number of shares of Common Stock
     that will be issued upon the  exercise of options to purchase  Common Stock
     from the Issuer that are held by the  Reporting  Persons and are  currently
     exercisable.

(2)  See Item 5(b) for a discussion of CP II's  beneficial  ownership as a party
     to the Agreements Among Partnerships.


                              Page 18 of 49 Pages

<PAGE>


     (b) CP II is currently  the  beneficial  owner of 900,167  shares of Common
Stock and 66,474 shares of 8% Cumulative  Convertible Redeemable Preferred Stock
of the Issuer,  par value $0.01 per share (the  "Convertible  Preferred  Stock")
(which convert into 2,215,800 shares of Common Stock). CP II is deemed to be the
beneficial  owner of 519,326 shares of Common Stock as the holder of a currently
exercisable  option to purchase  that amount of shares of Common  Stock from the
Issuer.  CP II shares the power to vote and to  dispose  of all of such  shares,
totaling  3,635,293,  (i) with TC Group, in TC Group's  capacity as CP II's sole
general  partner;  and (ii) with CP III pursuant to the CP III  Agreement  Among
Partnerships (described in Items 4 and 6). Pursuant to the CP II Agreement Among
Partnerships  (described  in Items 4 and 6), CP II has shared  power to vote the
4,215,637  shares  of  Common  Stock  that are  beneficially  owned by the other
Partnerships;  CP II  shares  this  power to vote  with TC  Group in TC  Group's
capacity as CP II's sole general partner.

     CP III is currently the  beneficial  owner of 64,817 shares of Common Stock
and 4,787 shares of  Convertible  Preferred  Stock  (which  convert into 159,567
shares of Common Stock).  CP III is deemed to be the beneficial  owner of 37,395
shares  of  Common  Stock as the  holder of a  currently  exercisable  option to
purchase  that amount of shares of Common  Stock from the Issuer.  CP III shares
the power to vote and to dispose of all of such shares,  totaling  261,779,  (i)
with TC Group, in TC Group's capacity as CP III's sole general partner; and (ii)
with CP II pursuant to the CP II Agreement Among  Partnerships.  Pursuant to the
CP III  Agreement  Among  Partnerships,  CP III has  shared  power  to vote  the
7,589,151 shares that are beneficially owned by the other  Partnerships;  CP III
shares this power to vote with TC Group in TC Group's  capacity as CP III's sole
general partner.

     CIP II is currently the beneficial  owner of 592,143 shares of Common Stock
and 43,727 shares of Convertible  Preferred  Stock (which convert into 1,457,567
shares of Common Stock).  CIP II is deemed to be the beneficial owner of 341,621
shares as the holder of a currently  exercisable  option to purchase that amount
of shares of Common  Stock from the Issuer.  CIP II shares the power to vote and
the power to dispose of all of such shares, totaling 2,391,331, with TC Group in
TC Group's  capacity  as CIP II's  managing  general  partner.  Pursuant  to the
Agreements Among Partnerships,  CIP II also shares the power to vote such shares
with CP II and CP III.

     CIP III is currently the beneficial  owner of 75,515 shares of Common Stock
and 5,577 shares of  Convertible  Preferred  Stock  (which  convert into 185,900
shares of Common Stock).  CIP III is deemed to be the beneficial owner of 43,567
shares as the holder of a currently  exercisable  option to purchase that amount
of shares of Common Stock from the Issuer.  CIP III shares the power to vote and
the power to dispose of all of such shares,  totaling 304,982,  with TC Group in
TC Group's  capacity  as CIP III's  managing  general  partner.  Pursuant to the
Agreements Among Partnerships, CIP III also shares the power to vote such shares
with CP II and CP III.

     C/S is currently the beneficial owner of 269,224 shares of Common Stock and
19,881 shares of Convertible  Preferred Stock (which convert into 662,700 shares
of Common Stock).  C/S is deemed to be the beneficial owner of 155,321 shares as
the holder of a currently  exercisable  option to purchase such amount of shares
of Common  Stock from the Issuer.  C/S shares the power to vote and the power to
dispose of all of such shares,  totaling 1,087,245,  with TC Group in TC Group's
capacity as C/S's managing  general  partner.  Pursuant to the Agreements  Among
Partnerships,  C/S also  shares the right to vote such  shares with CP II and CP
III.

                              Page 19 of 49 Pages

<PAGE>

     CP-GTSD is currently the beneficial  owner of no shares of Common Stock and
is deemed to be the beneficial  owner of no shares of Common Stock.  Immediately
before the distribution to its partners  described in Item 3 above,  CP-GTSD was
the  beneficial  owner of  90,277  shares of  Common  Stock and 6,667  shares of
Convertible Preferred Stock (which convert into 222,233 shares of Common Stock).
CP-GTSD was deemed to be the  beneficial  owner of 52,083 shares of Common Stock
as the holder of a  currently  exercisable  option to  purchase  such  amount of
shares of Common Stock from the Issuer. CP-GTSD shared the power to vote and the
power to dispose of all of such shares,  totaling  364,593,  with TC Group in TC
Group's capacity as CP-GTSD's sole general  partner.  Pursuant to the Agreements
Among Partnerships,  CP-GTSD shared the right to vote such shares with CP II and
CP III. CP-GTSD does not beneficially own any shares of Common Stock as a result
of the distribution in connection with the dissolution of CP-GTSD.

     CP-GTSD II is currently  the  beneficial  owner of 42,171  shares of Common
Stock and 3,114  shares of  Convertible  Preferred  Stock  (which  convert  into
103,800 shares of Common Stock). CP-GTSD II is deemed to be the beneficial owner
of 24,329 shares of Common Stock as the holder of a currently exercisable option
to  purchase  that  amount of shares of Common  Stock  shares  from the  Issuer.
CP-GTSD  II shares the power to vote and and the power to dispose of all of such
shares,  totaling  170,300,  with TC Group in TC Group's capcity as CP-GTSD II's
sole general partner. Pursuant to the Agreements Among Partnerships,  CP-GTSD II
shares the right to vote such shares with CP II and CP III.

     TC Group is currently  the  beneficial  owner of 885 shares of Common Stock
and 66 shares of Convertible Preferred Stock (which convert into 2,200 shares of
Common  Stock.) TC Group is deemed to be the  beneficial  owner of 524 shares of
Common Stock as the holder of a currently  exercisable  option to purchase  that
amount of shares of Common  Stock from the Issuer.  TC Group is deemed to be the
beneficial  owner of  1,944,037  shares of Common  Stock and  143,560  shares of
Convertible  Preferred  Stock  (which  convert into  4,785,334  shares of Common
Stock) as the sole general partner of CP II, CP III, CP-GTSD, CP-GTSD II and the
managing general partner of CIP II, CIP III and C/S. In the same capacities,  TC
Group is deemed to be the beneficial  owner of 1,121,559  shares of Common Stock
as the holder of options to purchase  that amount of shares of Common Stock from
the Issuer.  TC Group is deemed to share voting and disposal  rights of all such
shares,  totaling 7,854,539, in its capacities as the sole general partner of CP
II, CP III, CP-GTSD,  CP-GTSD II and the managing general partner of CIP II, CIP
III and C/S.  TCG, as a member  holding a controlling  interest in TC Group,  is
deemed to share all rights herein described as belonging to TC Group.

     CP II  Investment  is currently  the  beneficial  owner of 14,173 shares of
Common Stock and 1,071 shares of Convertible Preferred Stock (which convert into
35,700 shares of Common  Stock). CP II Investment is deemed to be the beneficial
owner of 8,368 shares of Common  Stock as the holder of a currently  exercisable
option to purchase that amount of shares of Common Stock from the Issuer.  CP II
Investment  is a limited  partner of CP-GTSD and received the  securities of the
Issuer in connection with the dissolution of that  partnership.  CP II Holdings,
as a member  holding a controlling  interest in CP II  Investment,  is deemed to
share all rights herein described as belonging to CP II Investment.

                              Page 20 of 49 Pages

<PAGE>

     The  Reporting  Persons are the  beneficial  owners of a total of 1,959,095
shares of Common Stock and 144,697 shares of Convertible  Preferred Stock (which
convert into 4,823,234 shares of Common Stock). The Reporting Persons are deemed
to be the beneficial  owners of 1,130,451  shares of Common Stock as the holders
of options to  purchase  that amount of shares of Common  Stock  shares from the
Issuer. In the aggregate,  the Reporting Persons have voting rights and disposal
rights in a total of 7,912,780 shares of Common Stock of the Issuer.

     CIA does not have the power to vote or the power to dispose of the Issuer's
Common Stock under the  partnership  agreements  of CIP II or CIP III. SCOP does
not have the power to vote or the power to dispose of the Issuer's  Common Stock
under the partnership  agreement of C/S. Therefore,  CIA and SCOP are not deemed
beneficial  owners of any of the  securities of the Issuer held by the Reporting
Persons.

     (c) On January  24,  1998,  the  limited  partners  of  CP-GTSD  elected to
dissolve  CP-GTSD  in  accordance  with  the  terms of the  Limited  Partnership
Agreement,  and TC Group, as the General Partner,  has undertaken to wind up the
affairs of CP-GTSD. In connection therewith,  TC Group has caused a distribution
in kind of most of the  assets  of  CP-GTSD,  consisting  of  securities  of the
Issuer,  in accordance with the terms of the Limited  Partnership  Agreement and
has caused a pro rata  distribution of all of the securities of the Issuer owned
by  CP-GTSD to the  partners  of  CP-GTSD  in  accordance  with the terms of the
partnership agreement. On January 28, 1998, TC Group distributed to the partners
of CP-GTSD, two of whom (TC Group and CP II Investment) are themselves Reporting
Persons.  The  other  partners  of  CP-GTSD  are  not  affiliates  of any of the
Reporting  Persons.  The  Reporting  Persons have not  otherwise  disposed of or
acquired any additional securities of the Issuer.

     This  Amendment  also reflects  certain  reallocations  among the Reporting
Persons,  but such  reallocations  do not affect the aggregate  ownership by the
Reporting Persons in the securities of the Issuer.

     (d) No person other than the  Reporting  Persons is known to the  Reporting
Persons  to have the right to  receive  or the power to direct  the  receipt  of
dividends  from, or the proceeds from the sale of, the shares of Common Stock of
the Issuer owned by the Reporting Persons.

     (e) Not applicable.

Item 6. Contacts, Arrangements, Understandings or Relationships with Respect to
        Securities of the Issuer.

     CP II, CIP II, CIP III, C/S,  CP-GTSD,  and CP-GTSD II  (collectively,  the
"Purchasers"),  National Patent Development  Corporation ("NPD"), and the Issuer
are parties to that certain  Stockholders  Agreement dated January 24, 1995 (the
"Stockholders  Agreement").  Pursuant to the Stockholders Agreement, among other
terms and  conditions,  (i) the Issuer  granted to the  Purchasers  an option to
purchase  1,250,000  newly issued shares of Common Stock from the Company at any

                              Page 21 of 49 Pages

<PAGE>

time on or before January 24, 1999, at a price of $3.75 per share;  and (ii) the
holders of the majority of the Convertible  Preferred Stock were given the right
to elect a majority  of the  Issuer's  Board  until such time as the  Purchasers
cease to be the  beneficial  owners of the  Issuer's  Common Stock having 20% or
more of the  votes  that  may be cast  in  annual  or  special  meetings  of the
stockholders of the Issuer.  In connection with the dissolution of CP-GTSD,  the
parties to the  Stockholders  Agreement  amended the  Stockholders  Agreement by
executing a written Amendment to Stockholders  Agreement dated as of January 28,
1998 (the "Amendment to Stockholders Agreement").  The Amendment to Stockholders
Agreement  decreases the number of newly issued shares that the Purchasers  have
an option to purchase from the Issuer by the amount of 8,368  reflecting the pro
rata distribution of the options to the partners of CP-GTSD.  Additionally,  the
Issuer entered into agreements  with each of the partners of CP-GTSD,  including
TC Group and CP II  Investment  in order to confirm the right of each partner of
CP-GTSD to exercise its pro rata right to acquire the newly issued shares of the
Issuer in connection with the option initially allocated to CP-GTSD.

     Pursuant to the CP II Agreement Among Partnerships, the Partnerships agreed
that:  (i) CP II shall be entitled to  designate as nominees for election to the
Issuer's Board all but one of the directors that the  Partnerships  are entitled
to elect as holders of the Issuer's  voting stock;  (ii) the  Partnerships  will
elect the nominees  designated by CP II to the Issuer's Board;  and (iii) in the
event that any Partnership fails or refuses to elect its shares of voting stock,
CP II shall have an  irrevocable  proxy to vote such shares.  Pursuant to the CP
III Agreement Among Partnerships, the Partnerships agreed that: (i) CP III shall
be entitled to designate  one nominee for election to the Issuer's  Board;  (ii)
the  Partnerships  will elect the nominee  designated  by CP III to the Issuer's
Board; and (iii) in the event that any Partnership fails or refuses to elect its
shares of voting  stock,  CP III shall  have an  irrevocable  proxy to vote such
shares.

     Pursuant to the CP II Agreement Among Partnerships, the Partnerships, other
than CP II, also agreed to assign to CP II the power to  exercise  their  demand
registration  rights  under that certain  Registration  Rights  Agreement  dated
January 24, 1995, by and among the Partnerships (other than CP III), NPD and the
Issuer (the  "Registration  Rights  Agreement"),  but to share all  registration
rights  pursuant  to the  Registration  Rights  Agreement  pro  rata  among  the
Partnerships.

Item 7. Material to be filed as Exhibits.

Exhibit 1.        Joint Filing  Agreement by and among CP II, CP III, CIP II,
                  CIP III,  C/S,  CP-GTSD,  CP GTSD II, TC Group, TCG, CP II
                  Investment, and CP II Holdings dated as of January 28, 1998.


Exhibit 2.        Amendment  to Stockholders  Agreement by and among CP II,
                  CIP II, CIP III, C/S,  CP-GTSD,  CP-GTSD II, the Issuer 
                  and NPD dated as of January 28, 1998.

Exhibit 3.        Stock Option  Agreement by and between the Issuer and CP II 
                  Investment  Holdings,  L.L.C.,  dated  as of January 28, 1998.

Exhibit 4         Stock Option  Agreement by and between the Issuer and TC 
                  Group,  L.L.C.,  dated as of January 28, 1998.

                              Page 22 of 49 Pages

<PAGE>

Exhibit 5.        Stockholders  Agreement  by and among CP II, CIP II, CIP III,
                  C/S,  CP-GTSD,  CP-GTSD  II, the Issuer and NPD dated as of 
                  January 24, 1995.  (Filed as  Exhibit 2 to  Amendment  No. 1
                  to the Schedule and incorporated herein by reference).

Exhibit 6.        Amended and Restated  Agreement  Among  Partnerships (CP II)
                  by and among CP II, CP III, CIP II,  CIP III,  C/S,  CP-GTSD
                  and  CP-GTSD II dated as of  November  6,  1995.  (Filed as
                  Exhibit 5 to Amendment No. 1 to the Schedule and incorporated
                  herein by reference).

Exhibit 7.        Agreement Among  Partnerships  (CP III) by and among CP II,
                  CP III, CIP II, CIP III, C/S, CP-GTSD and CP-GTSD II dated 
                  as of  November 6, 1995. (Filed as  Exhibit 6 to  Amendment
                  No. 1 to the Schedule and incorporated herein by reference).

Exhibit 8.        Registration  Rights Agreement by and among CP-II,  CIP-II,
                  CIP-III,  C/S, CP-GTSD,  CP-GTSD II, the  Issuer  and NPD
                  dated as of  January  24,  1995.  (Filed as  Exhibit 4 to the
                  Schedule and incorporated herein by reference).















                              Page 23 of 49 Pages


<PAGE>

                                    Signature

After reasonable  inquiry and to the best of the knowledge of the undersigned on
pages 25 and 26 hereof,  such undersigned certify that the information set forth
in this statement is true, complete and correct.

                                                     February 4, 1998
                                                     Date


























                              Page 24 of 49 Pages


<PAGE>


     IN WITNESS WHEREOF,  the Reporting Persons have caused this Amendment No. 2
to Statement on Schedule 13D to be executed as of the date first above written.

                                 CARLYLE PARTNERS II, L.P.
                                 By:     TC Group, L.L.C., its General Partner

                                 By:     /s/ Daniel A. D'Aniello
                                         -------------------------------
                                 Name:   Daniel A. D'Aniello
                                 Title:  Managing Director

                                 CARLYLE PARTNERS III, L.P.
                                 By:     TC Group, L.L.C., its General Partner

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                 Name:   Daniel A. D'Aniello
                                 Title:  Managing Director

                                 CARLYLE INTERNATIONAL PARTNERS
                                 II, L.P.

                                 By:  TC Group, L.L.C., its General Partner

                                 By:     /s/ Daniel A. D'Aniello
                                         -------------------------------
                                 Name:   Daniel A. D'Aniello
                                 Title:  Managing Director

                                 CARLYLE INTERNATIONAL PARTNERS
                                 III, L.P.

                                 By:     TC Group, L.L.C., its General Partner

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                         Name:   Daniel A. D'Aniello
                                         Title:  Managing Director

                                 C/S INTERNATIONAL PARTNERS

                                 By:     TC Group, L.L.C., a General Partner

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                 Name:   Daniel A. D'Aniello
                                 Title:  Managing Director


                              Page 25 of 49 Pages


<PAGE>

                                 CARLYLE-GTSD PARTNERS, L.P.

                                 By:     TC Group, L.L.C., its General Partner

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                         Name:  Daniel A. D'Aniello
                                         Title: Managing Director

                                 CARLYLE-GTSD PARTNERS II, L.P.

                                 By:     TC Group, L.L.C., its General Partner

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                 Name:   Daniel A. D'Aniello
                                 Title:  Managing Director

                                 TC GROUP, L.L.C.

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                         Name:   Daniel A. D'Aniello
                                         Title:  Managing Director

                                 TCG HOLDINGS, L.L.C.

                                 By:     /s/Daniel A.  D'Aniello
                                         -------------------------------
                                 Name:   Daniel A. D'Aniello
                                 Title:  Managing Director

                                 CP II INVESTMENT HOLDINGS, L.L.C.

                                 By:     /s/Daniel A. D'Aniello
                                         ------------------------------
                                         Name:   Daniel A. D'Aniello
                                         Title:  Managing Director

                                 CP II HOLDINGS, L.L.C.

                                 By:    /s/Daniel A. D'Aniello
                                        -----------------------------
                                        Name:  Daniel A. D'Aniello
                                        Title: Managing Director












                              Page 26 of 49 Pages


<PAGE>

                                Index to Exhibits
                                -----------------
                                                                         Page

Exhibit 1.        Joint Filing Agreement by and among CP II,              28
                  CP III, CIP II, CIP III, C/S, CP-GTSD, 
                  CP GTSD II, TC Group, TCG, CP II Investment, and
                  CP II Holdings dated January 30,1998.

Exhibit 2.        Amendment to Stockholders Agreement by and among        31
                  CP II, CIP II, CIP III, C/S, CP-GTSD, CP GTSD II,
                  the Issuer and NPD dated as of January 28, 1998.

Exhibit 3.        Stock Option Agreement by and between the Issuer        34
                  and CP II Investment, dated as of January 28, 1998.

Exhibit 4.        Stock Option Agreement by and between the Issuer        42
                  and TC Group, dated as of January 28, 1998.

























                               Page 27 of 49 Pages


<PAGE>

                                    EXHIBIT 1

                             JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(f)  promulgated under the Securities Exchange
Act of 1934, as amended,  the undersigned  hereby agree to the joint filing with
all  other  Reporting  Persons  (as such term is  defined  in the  Schedule  13D
referred  to below) on behalf of each of them of a  statement  on  Schedule  13D
(including amendments thereto) with respect to the common stock, par value $0.01
per share, of GTS Duratek, Inc., a Delaware corporation, and that this Agreement
may be  included  as an Exhibit  to such joint  filing.  This  Agreement  may be
executed  in any  number of  counterparts,  all of which  taken  together  shall
constitute one and the same instrument.

     IN WITNESS  WHEREOF,  the  undersigned  have  caused this  Agreement  to be
executed as of the 28th day of January, 1998.

                                 CARLYLE PARTNERS II, L.P.

                                 By:  TC Group, L.L.C., its General Partner

                                 By:  /s/Daniel A. D'Aniello
                                 ---------------------------
                                      Name:   Daniel A. D'Aniello
                                      Title:  Managing Director

                                 CARLYLE PARTNERS III, L.P.

                                 By:  TC Group, L.L.C., its General Partner

                                 By:  /s/Daniel A. D'Aniello
                                      ---------------------------
                                      Name:  Daniel A. D'Aniello
                                      Title: Managing Director

                                 CARLYLE INTERNATIONAL PARTNERS
                                 II, L.P.

                                 By:  TC Group, L.L.C., its General Partner

                                 By:  /s/Daniel A. D'Aniello
                                      ---------------------------
                                      Name:  Daniel A. D'Aniello
                                      Title: Managing Director


                              Page 28 of 49 Pages

<PAGE>

                                 CARLYLE INTERNATIONAL PARTNERS
                                 III, L.P.

                                 By:  TC Group, L.L.C., its General Partner

                                 By:  /s/Daniel  A. D'Aniello
                                      ----------------------------
                                      Name:  Daniel A. D'Aniello
                                      Title: Managing Director

                                 C/S INTERNATIONAL PARTNERS

                                 By:    TC Group, L.L.C., a General Partner

                                 By:    /s/Daniel A. D'Aniello
                                        -----------------------------
                                        Name:  Daniel A. D'Aniello
                                        Title: Managing Director

                                 CARLYLE-GTSD PARTNERS, L.P.

                                 By:    TC Group, L.L.C., its General Partner

                                 By:    /s/Daniel A.D'Aniello
                                        ---------------------------
                                        Name:  Daniel A. D'Aniello
                                        Title: Managing Director

                                 CARLYLE-GTSD PARTNERS II, L.P.

                                 By:    TC Group, L.L.C., its General Partner

                                 By:    /s/ Daniel A. D'Aniello
                                        ------------------------------
                                        Name:  Daniel A. D'Aniello
                                        Title: Managing Director

                                 TC GROUP, L.L.C.

                                 By:    /s/Daniel A. D'Aniello
                                        -----------------------------
                                        Name:  Daniel A. D'Aniello
                                        Title: Managing Director


                              Page 29 of 49 Pages


<PAGE>

                                 TCG HOLDINGS, L.L.C.

                                 By:    /s/ Daniel A. D'Aniello
                                        ------------------------------
                                        Name:  Daniel A. D'Aniello
                                        Title: Managing Director


                                 CP II INVESTMENT HOLDINGS, L.L.C.

                                 By:   /s/Daniel A. D'Aniello
                                       ----------------------------
                                       Name:  Daniel A. D'Aniello
                                       Title: Managing Director


                                 CP II HOLDINGS, L.L.C.

                                 By:   /s/Daniel A. D'Aniello
                                       ----------------------------
                                       Name:  Daniel A. D'Aniello
                                       Title: Managing Director




















                               Page 30 of 49 Pages

<PAGE>

                                    EXHIBIT 2

                       AMENDMENT TO STOCKHOLDERS AGREEMENT


     THIS AMENDMENT TO STOCKHOLDERS'  AGREEMENT (this "Amendment"),  dated as of
January 28, 1998,  is entered  into by and among GTS  Duratek,  Inc., a Delaware
corporation  (the  "Company"),  Carlyle  Partners II,  L.P., a Delaware  limited
partnership ("CP II"), Carlyle International Partners II, L.P., a Cayman Islands
exempted limited  partnership ("CIP II"),  Carlyle  International  Partners III,
L.P.,  a  Cayman  Islands   exempted  limited   partnership   ("CIP  III"),  C/S
International  Partners,  a Cayman  Islands  partnership  ("C/S"),  Carlyle-GTSD
Partners,  L.P.,  a Delaware  limited  partnership  ("C-GP"),  and  Carlyle-GTSD
Partners II, L.P., a Delaware limited  partnership ("C-GP II"; and together with
CP II, CIP II, CIP III,  C/S and C-GP,  collectively,  "Carlyle"),  and National
Patent Development Corporation, a Delaware corporation ("NPD").

                                    RECITALS

     WHEREAS,  the  Company,  Carlyle  and NPD are  all of the  parties  to that
certain Stockholders Agreement (the "Agreement") dated as of January 24, 1995;

     WHEREAS,  the  limited  partners of C-GP have  elected to dissolve  C-GP in
accordance with the terms of the  partnership  agreement and,  accordingly,  the
general partner of C-GP has undertaken to wind up the affairs of C-GP;

     WHEREAS,  in  connection  with the winding up of the  affairs of C-GP,  its
general  partner has caused a distribution  in kind of most of the assets of the
C-GP in accordance with the terms of the partnership agreement and in connection
therewith  has caused a pro rata  distribution  of the  portion  of the  Company
Option held by C-GP to the partners of C-GP;

     WHEREAS,  the  parties  hereto  desire to amend the  Agreement  in order to
reflect the dissolution of C-GP and the pro rata  distribution of the portion of
the Company Option held by C-GP to the partners of C-GP;

     NOW, THEREFORE,  in consideration of the premises and the respective mutual
agreements herein contained, the parties hereby agree as follows:

     1.  Definitions.  All  capitalized  terms  used in this  Amendment  but not
otherwise  defined herein shall have the meanings  assigned to such terms in the
Agreement.

     2.  Company  Option.  Section  2.1 of the  Agreement  is hereby  amended by
deleting the number "One Million Two Hundred  Fifty  Thousand  (1,250,000)"  and
inserting  in its place "One  Million One Hundred  Ninety  Seven  Thousand  Nine
Hundred  Fourteen  (1,197,914)".  The portion of the Company Option held by C-GP
has been  distributed  on a pro  rata  basis  to the  partners  of C-GP and such
partners  are  parties to option  agreements  with the  Company  and the Company
acknowledges and consents to such distribution.


                              Page 31 of 49 Pages

<PAGE>

     3. Status of C-GP.  Upon the completion of the winding up of the affairs of
C-GP and the termination of its existence, C-GP will no longer be a party to the
Stockholders Agreement.

     4.   Counterparts.   This   Agreement  may  be  executed  in  two  or  more
counterparts,  each of  which  shall  be  deemed  an  original  and all of which
together shall be deemed one and the same instrument.

     5. Other Provisions.  All other provisions of the Agreement shall remain in
full force and effect.


















                   
                               Page 32 of 49 Pages

<PAGE>

     IN WITNESS  WHEREOF,  the undersigned  have executed this Amendment or have
caused their duly authorized agents to execute this Amendment as of the year and
date first above written.

                              GTS DURATEK, INC.

                              By:      /s/ Robert F. Shawver(SEAL)
                                       ------------------------------------
                              Name:    Robert F. Shawver
                              Title:   Executive Vice President and Chief
                                       Financial Officer

                              CARLYLE PARTNERS II, L.P.
                              CARLYLE INTERNATIONAL PARTNERS II, L.P.
                              CARLYLE INTERNATIONAL PARTNERS III, L.P.
                              C/S INTERNATIONAL PARTNERS
                              CARLYLE-GTSD PARTNERS, L.P.
                              CARLYLE-GTSD PARTNERS II, L.P.

                              By: TC Group, L.L.C., its General Partner

                              By:     /s/ Daniel A. D'Aniello(SEAL)
                                      ---------------------------------
                              Name:   Daniel A. D'Aniello
                              Title:  Managing Director



                              NATIONAL PATENT DEVELOPMENT
                              CORPORATION

                              By:     /s/Scott N. Greenberg(SEAL)
                                      ----------------------------------
                              Name:   Scott N. Greenberg
                              Title:  Vice President, Chief Financial Officer













                              Page 33 of 49 Pages

<PAGE>


                                    EXHIBIT 3

                             STOCK OPTION AGREEMENT

     THIS STOCK OPTION AGREEMENT (this  "Agreement") is made and entered into as
of the 28th day of January,  1998,  by and among GTS  Duratek,  Inc., a Delaware
corporation (the "Company"),  T.C. Group,  L.L.C., a Delaware limited  liability
company ("T.C.  Group"), and the individual or entity set forth on the signature
page hereto as the Optionee (the "Optionee").

                                    RECITALS

     WHEREAS, T.C. Group is the general partner of Carlyle-GTSD Partners,  L.P.,
a Delaware limited partnership ("C-GP"),  and Optionee is one of the partners of
C-GP;

     WHEREAS,  the  Company,  C-GP,  certain  affiliates  of The  Carlyle  Group
(collectively "Carlyle") and National Patent Development Corporation, a Delaware
corporation ("NPD"), are all parties to that certain Stockholders Agreement (the
"Stockholders  Agreement")  dated as of January 24, 1995,  pursuant to which the
Company granted to C-GP and Carlyle an option (the "Company Option") to purchase
up to a total of 1,250,000 shares of the Company's common stock, par value $0.01
per share (the "Common Stock");

     WHEREAS, the Company Option was subdivided among Carlyle and C-GP and, as a
result, an option (the "Partnership  Option") to purchase up to 52,086 shares of
Common Stock was allocated to C-GP;

     WHEREAS,  the  limited  partners of C-GP have  elected to dissolve  C-GP in
accordance with the terms of the partnership  agreement and,  accordingly,  T.C.
Group, as the general partner, has undertaken to wind up the affairs of C-GP;

     WHEREAS,  in  connection  with the winding up of the affairs of C-GP,  T.C.
Group  has  caused  a  distribution  in kind of  most of the  assets  of C-GP in
accordance  with  the  terms  of the  partnership  agreement  and in  connection
therewith has caused a pro rata  distribution of the  Partnership  Option to the
partners of C-GP in accordance with the terms of the partnership agreement;

     WHEREAS,  the  Company  has  agreed to enter into this  Agreement  with the
Optionee and to enter into  substantially  identical option agreements with each
of the other  partners of C-GP for the sole purpose of  confirming  the pro rata
distribution of the  Partnership  Option to the partners of C-GP and to evidence
the  rights  of the  partners  with  respect  to  their  pro  rata  share of the
Partnership Option, and no additional consideration was provided by the Optionee
hereunder;

     WHEREAS,  T.C. Group has agreed to be a party to such option  agreements in
order to acknowledge the pro rata distribution of the Partnership  Option to the
partners of C-GP and to agree to provide  notice to the Optionee as set forth in
Section 3(b) below;

                              Page 34 of 49 Pages

<PAGE>

     WHEREAS,  the  Company,  C-GP and Carlyle  have  entered  into an agreement
amending the  Stockholders  Agreement in order to reflect the dissolution of the
Partnership  and the pro rata  distribution  of the  Partnership  Option  to the
partners of C-GP;

     NOW,  THEREFORE,  in  consideration of the premises and the mutual promises
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

     1. Option.  In  connection  with the  dissolution  of C-GP and the pro rata
distribution  of the  Partnership  Option to its  partners,  the Company  hereby
acknowledges  and  agrees  to the right of the  Optionee  to  purchase  from the
Company up to the number of shares (the "Option  Shares") of Common Stock as set
forth  on the  signature  page  hereto.  The  option  contemplated  hereby  (the
"Option") may be exercised in whole,  but not in part, after the date hereof and
up to and including January 24, 1999, but only in accordance with the provisions
set forth in Section 3 hereof.  The Company will reserve a sufficient  number of
authorized  shares of Common  Stock to issue and sell to the Optionee to satisfy
the terms of this Agreement.

     2. Option  Price.  The purchase  price per share at which the Option may be
exercised (the "Option Price") is Three Dollars and  Seventy-Five  Cents ($3.75)
and the total  purchase  price shall be the product of the Option  Price and the
number of Option  Shares.  If the Company at any time  subdivides  (by any stock
split, stock dividend,  recapitalization or otherwise) its outstanding shares of
Common  Stock  into a  greater  number of  shares,  the  Option  Price in effect
immediately prior to such subdivision will be  proportionately  reduced,  and if
the Company at any time  combines  (by reverse  stock  split or  otherwise)  its
outstanding  shares of Common Stock into a smaller number of shares,  the Option
Price in effect  immediately  prior to such combination will be  proportionately
increased.

     3. Exercise of the Option.  The Option may be exercised  only in accordance
with the following provisions:

     (a) The Optionee shall have the right to exercise the Option in whole,  but
not in part,  at any time from April 6, 1998 to April 10,  1998  inclusive  (the
"Effective  Period") by delivering  the written  notice in the form of Exhibit A
attached  hereto (the  "Option  Notice") to the Company  stating the  Optionee's
desire to exercise the Option,  which notice shall be effective only if received
by the  Company  on or before  April 10,  1998,  in  accordance  with the notice
provisions set forth below.

     (b) If the Optionee  does not exercise  the Option in  accordance  with the
immediately preceding  subsection,  then the Option will automatically be deemed
to have been  exercised in full at the time that  Carlyle  first  exercises  the
balance  of the  Company  Option  pursuant  to  the  terms  of the  Stockholders
Agreement (the "Carlyle Exercise"). T.C. Group will deliver, or cause one of its
affiliates  to deliver,  to the  Optionee,  if the Optionee  has not  previously
exercised the Option, a copy of the written notice (the "Company Option Notice")
that it will be  delivering  to the  Company  in  connection  with  the  Carlyle
Exercise.  In the event that the Option is automatically  exercised  pursuant to
this Section  3(b),  the  Optionee  shall also be deemed to have elected the Net
Exercise  Right (as defined  below) to pay the exercise  price of the Option and
upon the issuance of the shares of Common Stock by the Company to the  Optionee,
this Agreement  shall  terminate  without  further action by any party.  Carlyle
shall have the right in its sole and absolute discretion to determine the timing
of the Carlyle  Exercise  and shall have no  liability to the Optionee or to any
other party with respect to such decision.

                              Page 35 of 49 Pages

<PAGE>

     (c) In the case of Section  3(a),  the date of exercise of the Option shall
be deemed to be the date that the Company  received the Option  Notice with this
Agreement  attached  during  the  Effective  Period or shall be deemed to be the
first  day of the  Effective  Period  if  received  by the  Company  before  the
Effective  Period and, in the case of Section 3(b),  the date of exercise of the
Option  shall be deemed to be the date that the  Company  received  the  Company
Option Notice.

     (d) The  Optionee  may not exercise the Option at any other time other than
the times specified in this Section 3.

     4. Closing.  The closing (the "Option  Closing") for the Option shall occur
at the Company's  principal  office, or at such other place as the Company shall
specify to the Optionee after the receipt by the Company of the Option Notice or
the Company Option Notice,  as the case may be, no later than the fifth business
day after the Company's receipt of such notice.

     5. Payment of Option Price.  (a) At the Option Closing,  the Optionee shall
pay to the Company by wire transfer of same day available  funds or by certified
check or bank draft payable to the order of the Company,  an amount in cash (the
"Cash  Payment")  equal to the Option Price  multiplied  by the number of Option
Shares,  and  the  Company  shall  deliver  to the  Optionee  a  certificate  or
certificates  representing the Option Shares,  together with such instruments of
conveyance  and transfer as shall be effective to vest in the Optionee  title to
the shares.  Alternatively,  the Optionee  shall pay the exercise  price for the
Option by means of the Net Exercise Right as defined in Section 5(b) below.

     (b) The Company has agreed,  in accordance with the terms hereof, to accept
payment for the exercise of the Option by the delivery of the appropriate number
of Option  Shares  having a fair market  value equal to the  aggregate  exercise
price for the Option.  The ability of the  Optionee  to pay the  exercise  price
through the  delivery of Option  Shares  shall be referred to herein as the "Net
Exercise  Right".  Upon  exercise of the Net Exercise  Right,  the Company shall
deliver to the  Optionee  (without  payment by the Optionee of any cash or other
consideration)  that  number of shares of  Common  Stock  equal to the  quotient
obtained  by  dividing  (x) the value of the  Option  at the time the  Option is
exercised  (determined  by  subtracting  the aggregate  exercise price in effect
immediately  prior to the exercise of the Option from the aggregate  fair market
value of the Option Shares  immediately  prior to the exercise of the Option) by
(y) the fair market value of one share of Common Stock  immediately prior to the
exercise of the  Option.  The fair  market  value of a share of Common  Stock is
determined as follows:

                              Page 36 of 49 Pages

<PAGE>

(i)  If the Common Stock is listed on a national securities exchange or admitted
     to unlisted  trading  privileges  on such exchange or listed for trading on
     the Nasdaq National Market System,  the fair market value shall be the last
     reported  sale price of the Common Stock on such  exchange or system on the
     last business day prior to the date of exercise of the Option or if no such
     sale is made on such day, the average closing bid and asked prices for such
     day on such exchange or system;

(ii) If the  Common  Stock is not so  listed or  admitted  to  unlisted  trading
     privileges,  the fair market  value shall be the mean of the last  reported
     bid and asked prices reported by the National Quotation Bureau, Inc. on the
     last business day prior to the date of the exercise of the Option; or

(iii)If the  Common  Stock is not so  listed or  admitted  to  unlisted  trading
     privileges  and bid and asked prices are not so  reported,  the fair market
     value shall be an amount  determined  in such  reasonable  manner as may be
     prescribed by the Board of Directors of the Company.

     The Net Exercise Right may be exercised by the Optionee by the surrender of
this Agreement at the principal  office of the Company  together with the Option
Notice specifying that the Optionee intends to exercise the Net Exercise Right.

     6.  Additional  Documents.  Each party hereto agrees to execute and deliver
such documents and take such further actions as may be necessary or desirable to
effect the purposes and objectives of this Agreement.

     7.  Amendment  and Waiver.  This  Agreement  may not be amended or modified
except by a written  instrument signed by the parties hereto.  The waiver by any
party of such party's rights under this Agreement in any particular  instance or
instances,  whether  intentional  or  otherwise,  shall not be  considered  as a
continuing waiver which would prevent  subsequent  enforcement of such rights or
of any other rights.

     8.  Notices.  All notices and other  communications  hereunder  shall be in
writing  and  shall be deemed  to have  been  duly  given if sent by  recognized
overnight delivery service,  return receipt requested,  to the following parties
at the following  addresses or to such other parties and at such other addresses
as shall be specified by like notice:










                              Page 37 of 49 Pages

<PAGE>

               (a)      If to the Company:

                        GTS Duratek, Inc.
                        10100 Old Columbia Road
                        Columbia, Maryland  21046
                        Attention:  Mr. Robert F. Shawver
                                    Executive Vice President
                                      and Chief Financial Officer

               (b)      If to T.C. Group:

                        TC Group, L.L.C.
                        1001 Pennsylvania Avenue, N.W.
                        Suite 220 South
                        Washington, D.C.  20004
                        Attention:  Mr. Daniel A. D'Aniello
                                    Managing Director

               (c)      If to the Optionee, at the address set forth below on 
                        the signature page hereof.

Notice so given shall be deemed to be given and received on the second  business
day after sending by  recognized  overnight  delivery  service,  return  receipt
requested.

     9. Entire Agreement.  This Agreement and those documents expressly referred
to herein  constitute the entire agreement and  understanding  among the parties
with  respect  to the  Option  and  supersede  all other  prior  agreements  and
undertakings,  both written and oral,  among the parties,  or any of them,  with
respect to the subject matter hereof.

     10.  Severability.  If any provision of this Agreement  shall be held to be
illegal,   invalid  or  unenforceable   under  any  applicable  law,  then  such
contravention  or invalidity  shall not  invalidate the entire  Agreement.  Such
provision  shall be deemed to be modified to the extent  necessary  to render it
legal, valid and enforceable, and if no such modification shall render it legal,
valid  and  enforceable,  then  this  Agreement  shall  be  construed  as if not
containing the provision held to be invalid,  and the rights and  obligations of
the parties shall be construed and enforced accordingly.

     11.  Successors and Assigns.  This Agreement  shall inure to the benefit of
and be binding upon the parties hereto, their heirs, administrators,  executors,
successors and assigns.

     12. Headings. The headings of the Sections and paragraphs of this Agreement
have been inserted for  convenience  or reference  only and do not  constitute a
part of this Agreement.


                              Page 38 of 49 Pages

<PAGE>

     13. Choice of Law. The parties agree that this Agreement  shall be governed
by and construed in accordance with the laws of the State of Delaware, excluding
any laws thereof which would direct application of law of another jurisdiction.

     14.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts and by the parties hereto in separate  counterparts,  with the same
effect as if each  party had  signed the same  document.  All such  counterparts
shall be deemed an original,  shall be construed  together and shall  constitute
one and the same instrument.

     15. Gender and Number.  When the context requires,  the gender of all words
used herein shall include the  masculine,  feminine and neuter and the number of
all words shall include the singular and plural.

     16.  Defined  Terms.  All  capitalized  terms used herein and not otherwise
defined  in this  Agreement  shall  have the  meaning  given to such term in the
Stockholders Agreement.

     17. Recitals.  The Recitals are hereby  incorporated by reference herein as
if fully set forth herein.




















                              Page 39 of 49 Pages



<PAGE>

     IN WITNESS  WHEREOF,  the undersigned  have executed this Agreement or have
caused their duly authorized agents to execute this Agreement as of the year and
date first above written.


                                   GTS DURATEK, INC.

                                   By:      /s/ Robert F. Shawver(SEAL)
                                            ------------------------------------
                                   Name:    Robert F. Shawver
                                   Title:   Executive Vice President and Chief
                                            Financial Officer

                                   TC GROUP, L.L.C.

                                    By:      /s/ Daniel A. D'Aniello(SEAL)
                                             -----------------------------------
                                    Name:    Daniel A. D'Aniello
                                    Title:   Managing Director


                                    OPTIONEE:

                                    CP II INVESTMENT HOLDINGS, L.L.C.

                                    By:      /s/ Daniel A. D'Aniello(SEAL)
                                             -----------------------------------
                                    Name:    Daniel A. D'Aniello
                                    Title:   Managing Director

                                    Number of Option Shares:        8,368.00



















                              Page 40 of 49 Pages



<PAGE>

                                    EXHIBIT A

                               NOTICE OF EXERCISE

GTS Duratek, Inc.                                    Date: ___________________
10100 Old Columbia Road
Columbia, Maryland 21046
Attention:  Robert F. Shawver, Executive Vice President
               and Chief Financial Officer

     The undersigned  hereby  exercises the Option in full to purchase shares of
Common  Stock of GTS  Duratek,  Inc.  pursuant to the terms of the Stock  Option
Agreement dated January 28, 1998.

     Choose One of the Following:

         |_|    The  undersigned  makes  payment  of  $__________________  in
                cash,  in  payment  of the exercise  price  thereof.  The
                exercise price shall be shall be payable in United States
                dollars by wire  transfer  of same day  available  funds or by
                certified  check or bank raft payable to the order of
                GTS Duratek, Inc.

         |_|    The  undersigned  wishes to  exercise  the Net  Exercise  Right
                in lieu of making a cash payment for the exercise price thereof.



                                   Name of Optionee:__________________________
 
                                   Signature:_________________________________


     The  undersigned  will receive from the transfer agent of the Corporation a
single certificate for the number of shares purchased pursuant to this Notice of
Exercise            registered            as           follows: 

           Name:     _________________________________________________
                       (Please typewrite or print in block letters)

           Address:  _________________________________________________

                     _________________________________________________

THE STOCK  OPTION  AGREEMENT  MUST BE ATTACHED TO THIS NOTICE OF EXERCISE AT THE
TIME IT IS FURNISHED TO THE COMPANY.



                              Page 41 of 49 Pages


<PAGE>

                                    EXHIBIT 4

                             STOCK OPTION AGREEMENT


     THIS STOCK OPTION AGREEMENT (this  "Agreement") is made and entered into as
of the 28th day of January,  1998,  by and among GTS  Duratek,  Inc., a Delaware
corporation (the "Company"),  T.C. Group,  L.L.C., a Delaware limited  liability
company ("T.C.  Group"), and the individual or entity set forth on the signature
page hereto as the Optionee (the "Optionee").

                                    RECITALS

     WHEREAS, T.C. Group is the general partner of Carlyle-GTSD Partners,  L.P.,
a Delaware limited partnership ("C-GP"),  and Optionee is one of the partners of
C-GP;

     WHEREAS,  the  Company,  C-GP,  certain  affiliates  of The  Carlyle  Group
(collectively "Carlyle") and National Patent Development Corporation, a Delaware
corporation ("NPD"), are all parties to that certain Stockholders Agreement (the
"Stockholders  Agreement")  dated as of January 24, 1995,  pursuant to which the
Company granted to C-GP and Carlyle an option (the "Company Option") to purchase
up to a total of 1,250,000 shares of the Company's common stock, par value $0.01
per share (the "Common Stock");

     WHEREAS, the Company Option was subdivided among Carlyle and C-GP and, as a
result, an option (the "Partnership  Option") to purchase up to 52,086 shares of
Common Stock was allocated to C-GP;

     WHEREAS,  the  limited  partners of C-GP have  elected to dissolve  C-GP in
accordance with the terms of the partnership  agreement and,  accordingly,  T.C.
Group, as the general partner, has undertaken to wind up the affairs of C-GP;

     WHEREAS,  in  connection  with the winding up of the affairs of C-GP,  T.C.
Group  has  caused  a  distribution  in kind of  most of the  assets  of C-GP in
accordance  with  the  terms  of the  partnership  agreement  and in  connection
therewith has caused a pro rata  distribution of the  Partnership  Option to the
partners of C-GP in accordance with the terms of the partnership agreement;

     WHEREAS,  the  Company  has  agreed to enter into this  Agreement  with the
Optionee and to enter into  substantially  identical option agreements with each
of the other  partners of C-GP for the sole purpose of  confirming  the pro rata
distribution of the  Partnership  Option to the partners of C-GP and to evidence
the  rights  of the  partners  with  respect  to  their  pro  rata  share of the
Partnership Option, and no additional consideration was provided by the Optionee
hereunder;

     WHEREAS,  T.C. Group has agreed to be a party to such option  agreements in
order to acknowledge the pro rata distribution of the Partnership  Option to the
partners of C-GP and to agree to provide  notice to the Optionee as set forth in
Section 3(b) below;


                              Page 42 of 49 Pages

<PAGE>

     WHEREAS,  the  Company,  C-GP and Carlyle  have  entered  into an agreement
amending the  Stockholders  Agreement in order to reflect the dissolution of the
Partnership  and the pro rata  distribution  of the  Partnership  Option  to the
partners of C-GP;

     NOW,  THEREFORE,  in  consideration of the premises and the mutual promises
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

     1. Option.  In  connection  with the  dissolution  of C-GP and the pro rata
distribution  of the  Partnership  Option to its  partners,  the Company  hereby
acknowledges  and  agrees  to the right of the  Optionee  to  purchase  from the
Company up to the number of shares (the "Option  Shares") of Common Stock as set
forth  on the  signature  page  hereto.  The  option  contemplated  hereby  (the
"Option") may be exercised in whole,  but not in part, after the date hereof and
up to and including January 24, 1999, but only in accordance with the provisions
set forth in Section 3 hereof.  The Company will reserve a sufficient  number of
authorized  shares of Common  Stock to issue and sell to the Optionee to satisfy
the terms of this Agreement.

     2. Option  Price.  The purchase  price per share at which the Option may be
exercised (the "Option Price") is Three Dollars and  Seventy-Five  Cents ($3.75)
and the total  purchase  price shall be the product of the Option  Price and the
number of Option  Shares.  If the Company at any time  subdivides  (by any stock
split, stock dividend,  recapitalization or otherwise) its outstanding shares of
Common  Stock  into a  greater  number of  shares,  the  Option  Price in effect
immediately prior to such subdivision will be  proportionately  reduced,  and if
the Company at any time  combines  (by reverse  stock  split or  otherwise)  its
outstanding  shares of Common Stock into a smaller number of shares,  the Option
Price in effect  immediately  prior to such combination will be  proportionately
increased.

     3. Exercise of the Option.  The Option may be exercised  only in accordance
with the following provisions:

     (a) The Optionee shall have the right to exercise the Option in whole,  but
not in part,  at any time from April 6, 1998 to April 10,  1998  inclusive  (the
"Effective  Period") by delivering  the written  notice in the form of Exhibit A
attached  hereto (the  "Option  Notice") to the Company  stating the  Optionee's
desire to exercise the Option,  which notice shall be effective only if received
by the  Company  on or before  April 10,  1998,  in  accordance  with the notice
provisions set forth below.

     (b) If the Optionee  does not exercise  the Option in  accordance  with the
immediately preceding  subsection,  then the Option will automatically be deemed
to have been  exercised in full at the time that  Carlyle  first  exercises  the
balance  of the  Company  Option  pursuant  to  the  terms  of the  Stockholders
Agreement (the "Carlyle Exercise"). T.C. Group will deliver, or cause one of its
affiliates  to deliver,  to the  Optionee,  if the Optionee  has not  previously
exercised the Option, a copy of the written notice (the "Company Option Notice")
that it will be  delivering  to the  Company  in  connection  with  the  Carlyle
Exercise.  In the event that the Option is automatically  exercised  pursuant to
this Section  3(b),  the  Optionee  shall also be deemed to have elected the Net
Exercise  Right (as defined  below) to pay the exercise  price of the Option and
upon the issuance of the shares of Common Stock by the Company to the  Optionee,
this Agreement  shall  terminate  without  further action by any party.  Carlyle
shall have the right in its sole and absolute discretion to determine the timing
of the Carlyle  Exercise  and shall have no  liability to the Optionee or to any
other party with respect to such decision.

                              Page 43 of 49 Pages

<PAGE>

     (c) In the case of Section  3(a),  the date of exercise of the Option shall
be deemed to be the date that the Company  received the Option  Notice with this
Agreement  attached  during  the  Effective  Period or shall be deemed to be the
first  day of the  Effective  Period  if  received  by the  Company  before  the
Effective  Period and, in the case of Section 3(b),  the date of exercise of the
Option  shall be deemed to be the date that the  Company  received  the  Company
Option Notice.

     (d) The  Optionee  may not exercise the Option at any other time other than
the times specified in this Section 3.

     4. Closing.  The closing (the "Option  Closing") for the Option shall occur
at the Company's  principal  office, or at such other place as the Company shall
specify to the Optionee after the receipt by the Company of the Option Notice or
the Company Option Notice,  as the case may be, no later than the fifth business
day after the Company's receipt of such notice.

     5. Payment of Option Price.  (a) At the Option Closing,  the Optionee shall
pay to the Company by wire transfer of same day available  funds or by certified
check or bank draft payable to the order of the Company,  an amount in cash (the
"Cash  Payment")  equal to the Option Price  multiplied  by the number of Option
Shares,  and  the  Company  shall  deliver  to the  Optionee  a  certificate  or
certificates  representing the Option Shares,  together with such instruments of
conveyance  and transfer as shall be effective to vest in the Optionee  title to
the shares.  Alternatively,  the Optionee  shall pay the exercise  price for the
Option by means of the Net Exercise Right as defined in Section 5(b) below.

     (b) The Company has agreed,  in accordance with the terms hereof, to accept
payment for the exercise of the Option by the delivery of the appropriate number
of Option  Shares  having a fair market  value equal to the  aggregate  exercise
price for the Option.  The ability of the  Optionee  to pay the  exercise  price
through the  delivery of Option  Shares  shall be referred to herein as the "Net
Exercise  Right".  Upon  exercise of the Net Exercise  Right,  the Company shall
deliver to the  Optionee  (without  payment by the Optionee of any cash or other
consideration)  that  number of shares of  Common  Stock  equal to the  quotient
obtained  by  dividing  (x) the value of the  Option  at the time the  Option is
exercised  (determined  by  subtracting  the aggregate  exercise price in effect
immediately  prior to the exercise of the Option from the aggregate  fair market

                              Page 44 of 49 Pages

<PAGE>

value of the Option Shares  immediately  prior to the exercise of the Option) by
(y) the fair market value of one share of Common Stock  immediately prior to the
exercise of the  Option.  The fair  market  value of a share of Common  Stock is
determined as follows:

(i)  If the Common Stock is listed on a national securities exchange or admitted
     to unlisted  trading  privileges  on such exchange or listed for trading on
     the Nasdaq National Market System,  the fair market value shall be the last
     reported  sale price of the Common Stock on such  exchange or system on the
     last business day prior to the date of exercise of the Option or if no such
     sale is made on such day, the average closing bid and asked prices for such
     day on such exchange or system;

(ii) If the  Common  Stock is not so  listed or  admitted  to  unlisted  trading
     privileges,  the fair market  value shall be the mean of the last  reported
     bid and asked prices reported by the National Quotation Bureau, Inc. on the
     last business day prior to the date of the exercise of the Option; or

(iii)If the  Common  Stock is not so  listed or  admitted  to  unlisted  trading
     privileges  and bid and asked prices are not so  reported,  the fair market
     value shall be an amount  determined  in such  reasonable  manner as may be
     prescribed by the Board of Directors of the Company.

     The Net Exercise Right may be exercised by the Optionee by the surrender of
this Agreement at the principal  office of the Company  together with the Option
Notice specifying that the Optionee intends to exercise the Net Exercise Right.

     6.  Additional  Documents.  Each party hereto agrees to execute and deliver
such documents and take such further actions as may be necessary or desirable to
effect the purposes and objectives of this Agreement.

     7.  Amendment  and Waiver.  This  Agreement  may not be amended or modified
except by a written  instrument signed by the parties hereto.  The waiver by any
party of such party's rights under this Agreement in any particular  instance or
instances,  whether  intentional  or  otherwise,  shall not be  considered  as a
continuing waiver which would prevent  subsequent  enforcement of such rights or
of any other rights.

     8.  Notices.  All notices and other  communications  hereunder  shall be in
writing  and  shall be deemed  to have  been  duly  given if sent by  recognized
overnight delivery service,  return receipt requested,  to the following parties
at the following  addresses or to such other parties and at such other addresses
as shall be specified by like notice:

                              Page 45 of 49 Pages




<PAGE>

                 (a)      If to the Company:

                          GTS Duratek, Inc.
                          10100 Old Columbia Road
                          Columbia, Maryland  21046
                          Attention:  Mr. Robert F. Shawver
                                      Executive Vice President 
                                        and Chief Financial Officer

                 (b)      If to T.C. Group:

                          TC Group, L.L.C.
                          1001 Pennsylvania Avenue, N.W.
                          Suite 220 South
                          Washington, D.C.  20004
                          Attention:  Mr. Daniel A. D'Aniello
                                      Managing Director

                 (c)      If to the Optionee, at the address set forth below on
                          the signature page hereof.

Notice so given shall be deemed to be given and received on the second  business
day after sending by  recognized  overnight  delivery  service,  return  receipt
requested.

     9. Entire Agreement.  This Agreement and those documents expressly referred
to herein  constitute the entire agreement and  understanding  among the parties
with  respect  to the  Option  and  supersede  all other  prior  agreements  and
undertakings,  both written and oral,  among the parties,  or any of them,  with
respect to the subject matter hereof.

     10.  Severability.  If any provision of this Agreement  shall be held to be
illegal,   invalid  or  unenforceable   under  any  applicable  law,  then  such
contravention  or invalidity  shall not  invalidate the entire  Agreement.  Such
provision  shall be deemed to be modified to the extent  necessary  to render it
legal, valid and enforceable, and if no such modification shall render it legal,
valid  and  enforceable,  then  this  Agreement  shall  be  construed  as if not
containing the provision held to be invalid,  and the rights and  obligations of
the parties shall be construed and enforced accordingly.

     11.  Successors and Assigns.  This Agreement  shall inure to the benefit of
and be binding upon the parties hereto, their heirs, administrators,  executors,
successors and assigns.

     12. Headings. The headings of the Sections and paragraphs of this Agreement
have been inserted for  convenience  or reference  only and do not  constitute a
part of this Agreement.


                              Page 46 of 49 Pages

<PAGE>


     13. Choice of Law. The parties agree that this Agreement  shall be governed
by and construed in accordance with the laws of the State of Delaware, excluding
any laws thereof which would direct application of law of another jurisdiction.

     14.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts and by the parties hereto in separate  counterparts,  with the same
effect as if each  party had  signed the same  document.  All such  counterparts
shall be deemed an original,  shall be construed  together and shall  constitute
one and the same instrument.

     15. Gender and Number.  When the context requires,  the gender of all words
used herein shall include the  masculine,  feminine and neuter and the number of
all words shall include the singular and plural.

     16.  Defined  Terms.  All  capitalized  terms used herein and not otherwise
defined  in this  Agreement  shall  have the  meaning  given to such term in the
Stockholders Agreement.

     17. Recitals.  The Recitals are hereby  incorporated by reference herein as
if fully set forth herein.













                              Page 47 of 49 Pages



<PAGE>

     IN WITNESS  WHEREOF,  the undersigned  have executed this Agreement or have
caused their duly authorized agents to execute this Agreement as of the year and
date first above written.

                                   GTS DURATEK, INC.

                                   By:      /s/ Robert F. Shawver(SEAL)
                                            ------------------------------------
                                   Name:    Robert F. Shawver
                                   Title:   Executive Vice President and Chief
                                            Financial Officer


                                   TC GROUP, L.L.C.

                                   By:      /s/ Daniel A. D'Aniello(SEAL)
                                            ------------------------------------
                                   Name:    Daniel A. D'Aniello
                                   Title:   Managing Director


                                   OPTIONEE:

                                   TC GROUP, L.L.C.

                                   By:      /s/ Daniel A. D'Aniello(SEAL)
                                            ------------------------------------
                                   Name:    Daniel A. D'Aniello
                                   Title:   Managing Director


                                   Optionee's Address:

                                            _________________________________
                                            _________________________________
                                            _________________________________

                                   Number of Option Shares:             524.00









                              Page 48 of 49 Pages

<PAGE>

                                    EXHIBIT A

                               NOTICE OF EXERCISE

GTS Duratek, Inc.                                    Date: ___________________
10100 Old Columbia Road
Columbia, Maryland 21046
Attention:  Robert F. Shawver, Executive Vice President
               and Chief Financial Officer

     The undersigned  hereby  exercises the Option in full to purchase shares of
Common  Stock of GTS  Duratek,  Inc.  pursuant to the terms of the Stock  Option
Agreement dated January 28, 1998.

     Choose One of the Following:

         |_|      The  undersigned  makes  payment  of  $_____________________  
                  in cash,  in  payment  of the exercise  price  thereof.  The 
                  exercise price shall be shall be payable in United States
                  dollars by wire  transfer  of same day  available  funds or
                  by  certified  check or bank draft payable to the order of
                  GTS Duratek, Inc.

         |_|      The  undersigned  wishes to  exercise  the Net  Exercise  
                  Right in lieu of making a cash payment for the exercise
                  price thereof.



                                   Name of Optionee:__________________________
 
                                   Signature:_________________________________


     The  undersigned  will receive from the transfer agent of the Corporation a
single certificate for the number of shares purchased pursuant to this Notice of
Exercise  registered  as   follows:   

         Name:   _________________________________________________ 
                   (Please typewrite or print in block letters)

      Address:   _________________________________________________

                 _________________________________________________



THE STOCK  OPTION  AGREEMENT  MUST BE ATTACHED TO THIS NOTICE OF EXERCISE AT THE
TIME IT IS FURNISHED TO THE COMPANY.



                              Page 49 of 49 Pages





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