05000260/LER-1980-039-03, /03L-0:on 800916,drywell Control Air Valve 2-FCV-32-62 Could Not Be Closed by Handswitch.Cause Has Yet to Be Determined

/03L-0:on 800916,drywell Control Air Valve 2-FCV-32-62 Could Not Be Closed by Handswitch.Cause Has Yet to Be Determined

ML18025B153
Person / Time
Site:	Browns Ferry
Issue date:	10/09/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025B152	List: 05000260/LER-1980-039, Forwards LER 80-039/03L-0 05000260/LER-1980-039-03, /03L-0:on 800916,drywell Control Air Valve 2-FCV-32-62 Could Not Be Closed by Handswitch.Cause Has Yet to Be Determined
References
LER-80-039-03L-01, LER-80-39-3L-1, NUDOCS 8010210710
Download: ML18025B153 (3)

LER-1980-039, /03L-0:on 800916,drywell Control Air Valve 2-FCV-32-62 Could Not Be Closed by Handswitch.Cause Has Yet to Be Determined

Event date:
Report date:
2601980039R03 - NRC Website

text

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0 OB 60 6 I DOCKET NUhIBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT OESCRIPTION ANO PROBABLE CONSEQUENCES QIO With the unit in cold shutdown and refueling, drywell control air valve 2-FCV-

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32-62 could not be closed by operating its handswitch.

2-FCV-32-63 was operable.

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~There was no effect on the health'or safety of the public.

Previous occurrences will t.

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be addressed in the followup report.

These valves should be included in T.S.

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3.7.D.2 but are not.

This failure is, therefore, a violation of intent of

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Tha causa has not been determined at this time.

A followu re ort will be rocessad when tha investi ation is corn lete.

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S ecs. will be revised to include this valve in T.S. 3.7.D.2.

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Tennessee Valley Authority Browns Ferry Nuclear Plant Form BF-17 BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION BFRO 260 /

8039 Technical Specification Involved Reported Under Technical Specification 6 7-2 b ~4l Date of Occurrence 9/16/g0 Time of Occurrence Unit

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Identification and Descri tion'of Occurrence:

Mith the unit in a cold shutdown condition during a scheduled r'efueling outage, drywell control air valve 2 FCV 32-62 could not be closed by operation of its handswitch Conditions Prior to Occurrence:

Unit l - 95% steady state power Unit 2 - Refueling outage Unit 3 - 75% steady state power Action specified in the Technical Specification Surveillance Requirements met due to ino erable e ui ment.

Describe, Redundarit valve 2-FCV-32-63 was operable

~A parent Cause of Occurrence:

Still being investigated.

Anal sis of Occurrence; There. was no danger to the health or safety of the public, no release of activity, no damage to plant or equipment, and no significant resulting chain of events.'orrective Action:

'Zo-be provided when investigation is complete.

10CFR21 evaluation will be included in follow-up report after investigation.

C Failure Data:

To be provided when investigation is complete.

• Retention:

eriod - Lifetime;.Responsibility - Administrative Supervisor

+Revision:

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