ML18139A308

LER 80-005/01T-0:on 800306,during Preparation for Type a Testing,Leakage Found Through RSHX Diaphragm Plate Seal Welds.Caused by Lack of Fusion & Slag Inclusion.Defects to Be Repaired & Inspected by Nondestructive Test Methods

ML18139A308
Person / Time
Site:	Surry
Issue date:	06/06/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A306	List: ML18139A305 ML18139A307 ML18139A308
References
LER-80-005-01T, LER-80-5-1T, NUDOCS 8006120341
Download: ML18139A308 (1)

Text

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7-77}

-LICENSEE EVENT REPORT e CONTROL BLOCK:

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7 8 LV I A I s I p I s I 2 101 9 LICENSEE CODE . 14 15 0 I OI -I O I O I O I O I O I - I O I O 101 LICENSE NUMBER 25 26 4 11 I 1 I 1 I 1 101 . I I 0 LICENSE TYPE 30 57 CAT 58 CON'T 0JJ 7 B

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• sI 1 101 oI 3 I o I 6 I s I o*101 o I 6 I o I 6 I s I o* IG)

• 60 61 DOCKET NUMBER

• 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES*@

I With the unit at cold shutdown, preparation for Type A testing revealed leakage

~ through RSHX diaphragm plate seal welds. This is reportable per Technical Specifica-

[QJ]J tion 6.6.2.a.9. Because the unit was at cold shutdown, the health and safety of the public were not affected.

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7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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12 13 HI rl El xi cl Hl03) W w@ 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION Q LEA/RO LVENT YEP.A REPORT NO. CODE TYPE NO.

v_:,; ~EPORT NUMBER I 8 I OI 21 22 I I 23 24 OJ oJ sj 26 l/j 27 I oI 1 I 28 29 LI.I 30 31 w

32 ACTION FUTURE EFFECT SHUTDOWN r::;:;,. ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORM SUB. SUPPLIER MANUFACTURER LEJ@l.BJ@)

33 34 W@

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36 37 40 41 rn.J(§)

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43 I y Io 44 j3 Io I 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

)The leaking seal welds in the RSHX were attributed to lack of fns ion and slag inclusion in the weld areas. The diaphragm seal welds will be inspected and all defects will be QJJJ l-repaired and inspected by Non-destructive test methods. A design modification, incor-o::TIJ LI-----------------,------~----------------'

CIII] lporating a gasket to reduce diaphragm seal weld stress due to external forces, will be installed.

ITTIJ 7 8 9 80 FACILITY METHOD OF A STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION ~

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RELEASED OF RELEASE AMOUNT 0~ ACTIVITY~ .LOCATION OF RELEASE @)

~ ~@) ~@I NA NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES r:;;:;,.

NUMBER (:;:;\ TYPE DESCRIPTION o::EJ Io Io I0J0u.J1.....--~D...-----------------------'

7 8 9 11 12 13 80 PERSONNEL INJURIES ~

NUMBER DESCRIPTION6

[2IJ IO IO IO l@)i_______:N:::.:A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___.

7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY '43' TYPE DESCRIPTION ~

@I]~@ . NA 7 8 9 10 so PUBLICITY C\ NRC USE ONLY IT.TI] uu~L..-__

ISSUEDQ DESCRIPTION~

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8 9 1O GB 69 80 ;;

J. L. Wilson PHO N E : _ ___.(..,,8,..,0r.:,4:..,)___3...,5.J.7..;;:;-'-'3-'-J.o8_..4_ __

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NAME OF P R E P A R E R - - - - - - - - - - - - - - - - - -

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