05000321/LER-1979-036-01, /01T-0 on 790523:review of Class IE Electrical Equipment in Drywell Indicated That Solenoid on Reactor Sample Isolation Valve B31-F019 Was Not Documented as Able to Perform Under Accident Condition.New Model Ordered

/01T-0 on 790523:review of Class IE Electrical Equipment in Drywell Indicated That Solenoid on Reactor Sample Isolation Valve B31-F019 Was Not Documented as Able to Perform Under Accident Condition.New Model Ordered

ML19259C291
Person / Time
Site:	Hatch
Issue date:	05/30/1979
From:	Thomas Greene GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19259C288	List: 05000321/LER-1979-036, Forwards LER 79-036/01T-0 05000321/LER-1979-036-01, /01T-0 on 790523:review of Class IE Electrical Equipment in Drywell Indicated That Solenoid on Reactor Sample Isolation Valve B31-F019 Was Not Documented as Able to Perform Under Accident Condition.New Model Ordered
References
LER-79-036-01T-01, LER-79-36-1T-1, NUDOCS 7906140551
Download: ML19259C291 (3)

LER-1979-036, /01T-0 on 790523:review of Class IE Electrical Equipment in Drywell Indicated That Solenoid on Reactor Sample Isolation Valve B31-F019 Was Not Documented as Able to Perform Under Accident Condition.New Model Ordered

Event date:
Report date:
3211979036R01 - NRC Website

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NARRATIVE

FCR LER 79-035-01-T-0

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On May 23, 1979, during the 1979 refueling outage a Bechtel Power Corpor-ation review of Class IE electrical equipment in the drywell, in response to IE Bulletin 79-01, indicated that tr.e solenoid en reactor sample isolation valve 831-F019 did not have a cc=plete temcerature and raciation qualifica-tion test report to qualify it to perform uncer an accident concition.

There was no significant effect on plant safety frca this event since this valve would have failed in the closed condition and there is a redundant valve to assure that primary contair. ment isolation is met.

At the time of installation, the solenoid valve was not recuired to have test results for temperature and radiation requirements.

The later impler.-

ented IES 79-01 rcquired that all Class IE electrical equi: cent in the dry-well teet test resuits for radiation ar.d tercerature for accident cendi:icns which the originally installed equicren: can nc: r.:ee c.

A new ASCO model NS320AISSE has ceen orcered to replace the installed ASCO model 830231 solenoid and this will be ins.talled prior to startup.

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