05000271/LER-1976-005, Telecopy LER 76-005:on 760217,portion of Procedure Associated W/Securing Plant from Shutdown Cooling Mode Not Performed.Caused by Failure of Plant Personnel to Follow Appropriate Plant Procedure

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Telecopy LER 76-005:on 760217,portion of Procedure Associated W/Securing Plant from Shutdown Cooling Mode Not Performed.Caused by Failure of Plant Personnel to Follow Appropriate Plant Procedure
ML20086D256
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 02/18/1976
From: Riley B
VERMONT YANKEE NUCLEAR POWER CORP.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086D251 List:
References
LER-76-005, LER-76-5, VYV-4198, NUDOCS 8312010071
Download: ML20086D256 (3)
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LER-2076-005, Telecopy LER 76-005:on 760217,portion of Procedure Associated W/Securing Plant from Shutdown Cooling Mode Not Performed.Caused by Failure of Plant Personnel to Follow Appropriate Plant Procedure
Event date:
Report date:
2712076005R00 - NRC Website
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@ l appropriato plant procedure. Retnedial action is in the process of being reviewed l 60 89 l

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'z _ Subsequent' to a reactor startup,"it was discovered that a portion of a procedure associated with securing fro-: the shutdown cooling Me of eperation was not perforred." Iccediately following the discovery of *

'. this condition, ter. ting was initiated to deter =ine the operability of the ERR-25MB valves. Tcot results indicated that the Ri!R-25B valve * ,'

. 't , would unt stroke electrically until it was canually cracked off its

. '( closed coat. RER-25A valve .was canually cracked off its closed seat

  • ' and stroked electrically. Kaintenance pernonnel observed that the

. . . degree ,of difficulty experienced whest RHR-25A was operated was notlecebly greater thnn that experienced with RER-2511. The resultant condit.los of l

. ,g..alvesv 25Af.D estchlished appurent- LPOI System inoperability. Manual

! .* operation of the RRR-25MB valves followed by several successful .

. -} electrical operations provided the icaediate corrective action and l

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  • verified subsequent operability of the LPCI System This event ir,not repetitive occurrence. (50-271/76-05) , , ,

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  • VERNON. VERMONT oS354 February 18, 1976 I. .

. United Stat,es Nuclear Regulatory Cornission &

. Office of Inspection and Enforectrant -

- Region I ,

t 631 Park Av.couc King of Prussia, Pennsylvania 19406 .

I.TIENTION: James P. O'Reilly, Director REFEEDiCE: Operating License DPR-28 ..

Docket No. 50-271 i

- Reportable occurrence No. I:0-76-05 (24 Hour Report)

Dear Sir:

As defined by Technical Specifications for the Vermont Yankee -

Nuclear Power Station, Section 6.7, we are reporting the attached I Reportable Occurrence as Ro-76-05.

Very truly Jour ,

l' r)lG b }\ q Bradford E Rileyh Plant Superintendent b.

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