05000366/LER-1980-085-03, /03L-0:on 800521,w/reactor in Hot Shutdown,Rhr Svc Water Pumps 2E11-C001B & D Started to Put Torus Cooling in Svc.Caused by Bad Seal in Air Release Valve,Allowing Vent on Discharge Line.Valve Reassembled

/03L-0:on 800521,w/reactor in Hot Shutdown,Rhr Svc Water Pumps 2E11-C001B & D Started to Put Torus Cooling in Svc.Caused by Bad Seal in Air Release Valve,Allowing Vent on Discharge Line.Valve Reassembled

ML19318A390
Person / Time
Site:	Hatch
Issue date:	06/11/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318A389	List: 05000366/LER-1980-085, Forwards LER 80-085/03L-0 05000366/LER-1980-085-03, /03L-0:on 800521,w/reactor in Hot Shutdown,Rhr Svc Water Pumps 2E11-C001B & D Started to Put Torus Cooling in Svc.Caused by Bad Seal in Air Release Valve,Allowing Vent on Discharge Line.Valve Reassembled
References
LER-80-085-03L, LER-80-85-3L, NUDOCS 8006200474
Download: ML19318A390 (2)

LER-1980-085, /03L-0:on 800521,w/reactor in Hot Shutdown,Rhr Svc Water Pumps 2E11-C001B & D Started to Put Torus Cooling in Svc.Caused by Bad Seal in Air Release Valve,Allowing Vent on Discharge Line.Valve Reassembled

Event date:
Report date:
3661980085R03 - NRC Website

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S 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 Jb REPORT DATE 80 EVENT DESCRIPTION AfJD PROOABLE CONSEQUENCES h With the reactor in hot shutdown, 2E11-C001B and D, RilR Service Water Pumps,

l yl were started to put Torus cooling in service.

When these pumps would not l

gl Since l

deliver required discharge pressure, they were declared inoperable.

gl the reactor was already in hot shutdown, Tech Specs were not applicable.

l 3 l A similar event was reported on Reportable Occurrence Report No. 50-366/

l s l 1980-024. Public health and safety were not affected by either of these l

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40 41 42 43 44 47 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS yl An investigation revealed that the seal in an air release valve was bad, l

yl allowing a vent on the discharge line. The valve was reassembled using j

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NARRATIVE

REPORT Georgia Power Company

~ Plant E. I. Hatch Bax1cy, Ceorgia 31513 Reportabic Occurrence Report No. 50-366/1980-085.

On_May 21, 1980, with the reactor in hot shutdown, division two of RHR Service Water, which consists of 2E11-C001B and D RHR Service Water Pamps, was selected to put Torus cooling in service.

When these pumps would not deliver required discharge pressure, they were declared inoperable. Tech Specs Section 3/4.7.1.a.3, which states to be in hot-shutdown within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> with one division of IUIR Service Water inoperable, was not applicabic.

Torus cooling mode was placed in service satisfactory when division one of RHR Service Water was selected. A similar event was reported on Reportabic Occurrence Report No. 50-366/1980-024.

Public health and safety were not affected by this incident, An investigation revealed that the seal in 2 Ell-F209B, Air Release Valve, was bad. This allowed a vent on the discharge line which prevented the pump from pumping requir2d pressure.

The valve was reassembled using a new seal and HNP-2-3160, RHR Service Water Pump Operability Test, was performed satisfactorily.

A review of the previous event did not reveal any inherent generic problems.

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