ML20107D290

Discusses Licensee AO Work Completed & Communications to Date,Indicating Listed Actions

ML20107D290
Person / Time
Site:	Oyster Creek
Issue date:	06/13/1974
From:	Greenman E US ATOMIC ENERGY COMMISSION (AEC)
To:	Caphton D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18039A986	List: IR 05000219/1970007 IR 05000219/1971001 IR 05000219/1971002 IR 05000219/1971003 IR 05000219/1971004 IR 05000219/1971005 IR 05000219/1972001 IR 05000219/1972002 IR 05000219/1972003 IR 05000219/1972004 IR 05000219/1972005 IR 05000219/1972013 IR 05000219/1972025 IR 05000219/1973003 IR 05000219/1973004 IR 05000219/1973006 IR 05000219/1973007 IR 05000219/1973008 IR 05000219/1973009 IR 05000219/1973010 IR 05000219/1973011 IR 05000219/1973012 IR 05000219/1973013 IR 05000219/1973014 IR 05000219/1973015 IR 05000219/1973016 IR 05000219/1973017 IR 05000219/1973019 IR 05000219/1973020 IR 05000219/1973021 IR 05000219/1973022 IR 05000219/1973023 IR 05000219/1974001 IR 05000219/1974002 IR 05000219/1974003 IR 05000219/1974004 IR 05000219/1974005 IR 05000219/1974006 IR 05000219/1974007 IR 05000219/1974008 IR 05000219/1974009 IR 05000219/1974010 IR 05000219/1974011 IR 05000219/1974012 IR 05000219/1974013 IR 05000219/1974014 IR 05000219/1974015 IR 05000219/1974016 IR 05000219/1974017 IR 05000219/1974018 ... further results
References
FOIA-95-258 NUDOCS 9604180203
Download: ML20107D290 (2)

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1 D.,L. Caphten, Set J.* Reacter Inspector

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. Directorate of Eagalatory Operations, DRO I p

l OfgTER CREEK (Bu 50-119)

JUN 1.919M INCORE FENETRATION LEAK (AD 74-34) 4 Baview of the 11eensee's A0, work eempleted and comaamaications to date tadicates the following.

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1.

The liesasse has determe==d that the failure is at a weld and does not represent a tube failure.

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2.

The 11eansee is apparently gearing up to propese rolling of the tube as a fix (To mar kaswledge no code ease esists to permit this repair).

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The 11aensee appears unable to ahorasterise the defect in the weld.

The emuse of the wsM failure has met yet been deternimed, i.e. from Laduced vibration, cerranian er other. The generic aspects are also i

unkassa.

4.

R0 I has =w==4==d P. T. reeerds for the affected weld (28-05 location).

The weld was 1. T. tested, aseepted, them subsequently repaired (rat-l 1emale maknesa) and again PT tested, a 1/16" linear indication re-i moved and them accepted again.

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I believe our position in this metter should be as fo11ews:

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1.

Until the failure paeh=ci== is defined other comparable welds l

can not and should not be emeluded from generie consMarations.

I have doubts that the mechsasta causing the weld crack will be i

fortheeming based on the results to date. This presupposes an extensive monitoring and test program which sha=1A also imelude j

vibrational measuremmats on the affected la core penetration and l

more stringent surveillance an all vessel penetrations.

2.

The weld failure in and of itself represents an unreviewed l

l safety questica because the weakened area now faeresses the pro-l l

behility of failure and ejecties.

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Farther, the imp 1 - tation of a tube rolling fix without Con-l mission reviews and approval will constituta in my view a second un-reviewed safety questian para===e to 50.59 2(i). In this regard I'

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Greenman/jd Caphton Br nner O' L ily 6/12/74 (1

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9604100203 960213 PDR FOIA l

DEKOK95-258 PDR

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I believe JCP&L should eitdeum with DL and pr====t their total package of the evaluaties and justification.

3.

A catastrophie failure and ejectiam of the feetzweest tube is sa analysed accident in the FSAR. With a cracked weld the potential for ejecties is imeressed. Lisensing should be requested to reevalasta the centrol red drive housing support system in light of any m design changes as any be required, to precinde postulated ejection.

E. G. Greemmen Emacter Inspecter cc:

J. P. O'Reilly R. lleishman-J. Tillou E. Brunner G. Walton D. Caphton i

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