ML20064K369

RO 80-77/01P:on 801114,evaluation Per IE Bulletin 79-14 Indicated That Support on a Main Steam Header Line Was Less Conservative than Assumed in Tech Specs.Support Mods Were Complete on 801115

ML20064K369
Person / Time
Site:	Beaver Valley
Issue date:	11/17/1980
From:	Werling J DUQUESNE LIGHT CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-79-14, RO-80-77-01P, RO-80-77-1P, NUDOCS 8011240307
Download: ML20064K369 (3)

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Besver Valley Power Statina Post office Box 4

, SkiPPf agport, PA 130U kvember 17,1980

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Sq IssverYell Docket to Statica, Unit No.1 License No. DPR-66 3p Izt 8 M U/017 4

k. L L Gefar, Director of ha-1=da=

hitad Statss Le1==r legalatory Commission M. I .

en Park Avesse , "

Ifag of Pryssia, Pennsylvania 1M06 .

Daar k. Crist; la assordance with Appedix A, leaver Valley 7*ral Speciffrarinas, .

ifennsee Ivant taport LZ18HT//017, Teelmical Specification 6.9.1.8.1, j

(- Analysis of Piping Overstrass, is sobaitted. This occurrence was reported 1 to k. D. A. Ah, the kaver Yaney lesident Iaspector, at 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> es november 14,1980. -

Evaluatica and raamalysia' regsfred by II Ballatin 79-14 have shoun that tbs following support had les: ;mtise thaa **w ta the safety analysis enring aeraal operation sad requires r: medial actias. The condition has been i found to exist on the "A" asia.staea header branch line that' leads to the naia ,j staan header drain lines and stesa traps. The courequences of a break fa this 1=e=Han voeld be'as saisolable stesa line break from the "A" staan generator.

this type of break has twee analyzed for fa the 3 FPS safety analysis report.

The necessary support modifications to alleviate this condition were completed

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Essenber17,1980 NPS:Jss1023

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Director of Management & Program Analysis .

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Dmited States Neeleer Regalatory Commissica W.. D. C. 20555 8* A=. ledmas, Emelear. Regulatory Commiseise NPS Site Inspector h Magias, ' Secretary,. Priam Nevers Committes - Itz ~

1helaar Safety Analyiis Cantar, Palo Alto, California R. Jsha Alford, PA Public Utilities Commission, Barris6ws, PA e

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