ML20084E250

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AO 50-244/74-06:on 740422,RHR Valve 851B Failed to Open. Valve Manually Opened.Procedure Review Recommended
ML20084E250
Person / Time
Site: Ginna Constellation icon.png
Issue date: 04/23/1974
From: Platt C
ROCHESTER GAS & ELECTRIC CORP.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20084E247 List:
References
AO-50-244-74-06, AO-50-244-74-6, NUDOCS 8304140475
Download: ML20084E250 (1)


Text

$[U6,35 O.>d r.bf W;.' A COCllESTER GAS AND Et.EC C CORPORATION e 89 EAST AVENU!

CHESTER, N.Y. Ubu 4}

Ginna Statica m,,, m April 23, 1974

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Hr. Jcanas P. O'Reilly, Director Directorsta of R*5ulatory Operations

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Region 1 U. 8. Ato: sic Enargy Consission 631 Perk Avenue King of Prussia, Pennsylvania 19406

Subject:

Abnomnt Occurrence 74-6: Failure of Valva. 051B (RHR. Fu=p Suction Frca Contait=ent Sump B) to open on April 22,1974.

Ginna Station Uutt #1 Dockst 450-244 Daar Mr. O'Railly:

This is to confim rey phone en11 to Mr. Walter Baunack today to report Abnoms1 Occurrence 74-6 at Cinna Station.

During the afternoon of April 22, 1974, uhile lining up the Residuni Heat Pmval Sycten for coreal plant operation, Valva 851B fatted to opan. Maintenance r:an catered Centsi=:=nt and af ter Catting the-valvo in manual and moving it frca the.

cicasd position, the valva operated properly alaceriently. Zhn valve vas cicud emi opencd cuccessfully three times electrically and the valve tras declared cporable at 1830 on April 22, 1974.

The Plant Opsentions Revics Co=sittea met end discussed the Abnorrcl Occurrence.

A recmsendation was endo to review the reactor coolant system host up proccO::c:

and Erve a procedure change, submitted to hava valves 851A andt 8313' op,an bafora starting tha heat up.

Very truly yours, Charles E. Platt Supertendent C.-

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ces Mr. J. F. O' Leary

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