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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 AEqXTDkrPV9ePJ1ahCi4xJDuKLU99GNeY71TWEQVMTVjm/w+oLDfGT7JuN9qZyft
 oQu3VsIGJeTOSi1KYDEF6w==

<SEC-DOCUMENT>0001179110-03-013446.txt : 20031229
<SEC-HEADER>0001179110-03-013446.hdr.sgml : 20031225
<ACCEPTANCE-DATETIME>20031229131917
ACCESSION NUMBER:		0001179110-03-013446
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031215
FILED AS OF DATE:		20031229

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DELTETE PAUL
		CENTRAL INDEX KEY:			0001216922

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-14292
		FILM NUMBER:		031074918

	BUSINESS ADDRESS:	
		STREET 1:		DURATEK INC
		STREET 2:		10100 OLD COLUMBIA ROAD
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DURATEK INC
		CENTRAL INDEX KEY:			0000785186
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				222427618
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10100 OLD COLUMBIA ROAD
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
		BUSINESS PHONE:		4103125100

	MAIL ADDRESS:	
		STREET 1:		10100 OLD COLUMBIA ROAD
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GTS DURATEK INC
		DATE OF NAME CHANGE:	19930805

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DURATEK CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 5 -
<TEXT>
<XML>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>5</documentType>
<periodOfReport>2003-12-15</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <form3HoldingsReported>0</form3HoldingsReported>

    <form4TransactionsReported>0</form4TransactionsReported>

    <issuer>
        <issuerCik>0000785186</issuerCik>
        <issuerName>DURATEK INC</issuerName>
        <issuerTradingSymbol>DRTK</issuerTradingSymbol>
</issuer>
<reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001216922</rptOwnerCik>
            <rptOwnerName>DELTETE PAUL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10100 OLD COLUMBIA ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBIA</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21046</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>Senior Vice President</officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeTable></nonDerivativeTable>
<derivativeTable><derivativeTransaction><securityTitle><value>Common Stock Option</value>
</securityTitle>
<conversionOrExercisePrice><value>5.50</value>
</conversionOrExercisePrice>
<transactionDate><value>2003-12-15</value>
</transactionDate>
<transactionCoding><transactionFormType>5</transactionFormType>
<transactionCode>C</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness><value>L</value>
</transactionTimeliness>
<transactionAmounts><transactionShares><value>5016</value>
<footnoteId id="F1"></footnoteId>
</transactionShares>
<transactionPricePerShare><footnoteId id="F2"></footnoteId>
</transactionPricePerShare>
<transactionAcquiredDisposedCode><value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate><value>1999-12-15</value>
</exerciseDate>
<expirationDate><value>2003-12-15</value>
</expirationDate>
<underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value>
</underlyingSecurityTitle>
<underlyingSecurityShares><value>5016</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>102000</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</derivativeTransaction>
</derivativeTable>
<footnotes><footnote id="F1">On 12/15/03 Mr. Deltete did a net exercise of his options for 15,000 that were expiring on that day.  Net shares to Mr. Deltete were 5016.</footnote>
<footnote id="F2">Market price at close on 12/15/2003 was $11.14.</footnote>
</footnotes>
<ownerSignature><signatureName>C. Paul Deltete</signatureName>
<signatureDate>2003-12-29</signatureDate>
</ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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