05000366/LER-1979-041-01, /01T-0 on 790523:during Maint Outage,Review Indicated Solenoid on Reactor Sample Isolation Valve Did Not Have Complete Qualification Testing.Caused by Design Error. Solenoid Will Be Replaced

/01T-0 on 790523:during Maint Outage,Review Indicated Solenoid on Reactor Sample Isolation Valve Did Not Have Complete Qualification Testing.Caused by Design Error. Solenoid Will Be Replaced

ML19259C265
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
ML19259C262	List: 05000366/LER-1979-041, Forwards LER 79-041/01T-0 05000366/LER-1979-041-01, /01T-0 on 790523:during Maint Outage,Review Indicated Solenoid on Reactor Sample Isolation Valve Did Not Have Complete Qualification Testing.Caused by Design Error. Solenoid Will Be Replaced
References
LER-79-041-01T, LER-79-41-1T, NUDOCS 7906140509
Download: ML19259C265 (3)

LER-1979-041, /01T-0 on 790523:during Maint Outage,Review Indicated Solenoid on Reactor Sample Isolation Valve Did Not Have Complete Qualification Testing.Caused by Design Error. Solenoid Will Be Replaced

Event date:
Report date:
3661979041R01 - NRC Website

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t Event Description and Probable ConsequencesThis is a non-repetitive occurrence.

Cause Description and Corrective Actions~

no radiation qualifications could be furnished. Although the installed sole-noid doesn't meet radiation qualifications, this is of no consequence since it would function for a reasonably safe period until a ne'.t solenoid can

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be installed at the first cold shutdcun outage upon recefpt of the new sole-noid.

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NARRATIVE

FOR LER 79-041-01-T-0 l

t On May 23, 1979, during the hanger maintenance outage a Bechtel Power i

Corporation review of Class IE electrical equipment in the drywell in res-ponse to IE Bulletin 79-01 indicated that the solenoid on reactor sample isolation valve 2B31-F019 did not have a complete temperature and radia-tion qualification test report document to qualify it to perform under an accident condition.

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

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At the time of installation of the solenoid valve, we were committed to certain environmental IEEE requirements; however, design did not request these qualifications from ASCO.

This IEEE requirecent calls for test rep-ort data on radiation and temperature qualification be furnished. Although it was found that the originally installed ASCO model 3TX8320A103 U sole-noid did meet the temperature qualifications, no radiation qualificaticns could be furnished.

l Although the installed solenoid doesn't meet radiation qualifications, this is en no consequence to plant safety since it would functicn for a reasonably safe period until a new solenoid can be installed.

A new ASCO model N8320A185E has been ordered and will be installed at the first cold shutdown outage upon receipt of the new solenoid.

.2279 278 l

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