05000321/LER-1981-039-01, /01T-0:on 810428,supports B21-f30-H007 & B21-f30-H004 Found to Fail Support Functionality Criteria Per IE Bulletin 79-14.Caused by Design Requirements Being Exceeded

/01T-0:on 810428,supports B21-f30-H007 & B21-f30-H004 Found to Fail Support Functionality Criteria Per IE Bulletin 79-14.Caused by Design Requirements Being Exceeded

ML19347E694
Person / Time
Site:	Hatch
Issue date:	05/07/1981
From:	Coggin C GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19347E693	List: 05000321/LER-1981-039, Forwards LER 81-039/01T-0 05000321/LER-1981-039-01, /01T-0:on 810428,supports B21-f30-H007 & B21-f30-H004 Found to Fail Support Functionality Criteria Per IE Bulletin 79-14.Caused by Design Requirements Being Exceeded
References
IEB-79-14, LER-81-039-01T, LER-81-39-1T, NUDOCS 8105130238
Download: ML19347E694 (2)

LER-1981-039, /01T-0:on 810428,supports B21-f30-H007 & B21-f30-H004 Found to Fail Support Functionality Criteria Per IE Bulletin 79-14.Caused by Design Requirements Being Exceeded

Event date:
Report date:
3211981039R01 - NRC Website

text

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8 6D 68 DOCKET NUMBER 68 b9 EWENT DATE 74 ib REPORT DAT E 80 EVENT DESCRIPTION AND pro 8ABLE CONSEQUENCES h

'l0n 4-28-81. the AE conducted a surveillance walkdown of oice supports I

o 2 l per IEB 79-14, and it was discovered that supports B21-f 30-H007 and I

o a IB21-f30-H004 failed the support functionality criteria for IEB 79-14.

I o 4 IThis is a repetitive occurrence; see LER 50-321/1981-034.

No system I

o s o 6 loperability was affected.

There were no effects on public health or i

o 7 lsafety.

Unit I was already shutdown for a refueling / torus modification I I

[olaiioutage.

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40 41 42 43 44 47 CAuSE DESCRIPTION AND CORRECTIVE ACTIONS Is lOl lThe desian requirements of the supports were exceeded.

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1111]lsupport B21-f30-H007 bottomed out, and the U-bolts in support 821-f30-1 IT-lT1 IH004 were overstrassed.

The supports will be modified or replaced as i

E Inecessary prior to Unit I startup such that the requirements of Tech l

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LER #:

50-321/1981-039 Licensec:

Georgia Power Company i

Facility Name:

Edwin I. Ilatch Docket f:

50-321

Narrative

Report for LER 50-321/1981-039 On 4-28-81, with Unit 1 shutdown for a refueling / torus modif-ication outage the AE conducted a surycillance walkdown of pipe supports per IEB 79-14.

It was discov_cred that the spring in support B21-f30-II007 had bottomed out', and that the U-bolts in support B21-f30-H004 were overstressed; both supports, therefore, failed the support functionality criteria for IEB 79-14.

This is a

repetitive occurrence; see LER 50-321/1981-034.

No system operability was affected.

There were no effects on public health or safety.

The design requirements of the supports were exceeded.

The AE is still conducting IEB 79-14 walkdown, and their final recom-mendations will be implemented.

The supports will be modified or replaced as necessary prior to Unit 1 startup.

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