05000366/LER-1982-096-03, /03L-0:on 820920,during RHR Torus Spray Mode Procedure,Torus Water Temp Exceeded Tech Spec Limit.Caused by Procedural Error.Spray Valve Shut & Cooling Continued to 94 F & Decreasing.Procedure Revision Initiated

/03L-0:on 820920,during RHR Torus Spray Mode Procedure,Torus Water Temp Exceeded Tech Spec Limit.Caused by Procedural Error.Spray Valve Shut & Cooling Continued to 94 F & Decreasing.Procedure Revision Initiated

ML20027D514
Person / Time
Site:	Hatch
Issue date:	10/19/1982
From:	Tipps S GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027D513	List: 05000366/LER-1982-096, Forwards LER 82-096/03L-0 05000366/LER-1982-096-03, /03L-0:on 820920,during RHR Torus Spray Mode Procedure,Torus Water Temp Exceeded Tech Spec Limit.Caused by Procedural Error.Spray Valve Shut & Cooling Continued to 94 F & Decreasing.Procedure Revision Initiated
References
LER-82-096-03L, LER-82-96-3L, NUDOCS 8211040414
Download: ML20027D514 (1)

LER-1982-096, /03L-0:on 820920,during RHR Torus Spray Mode Procedure,Torus Water Temp Exceeded Tech Spec Limit.Caused by Procedural Error.Spray Valve Shut & Cooling Continued to 94 F & Decreasing.Procedure Revision Initiated

Event date:
Report date:
3661982096R03 - NRC Website

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NRC FORM 366 U.S. NUCLEAR REGULATCRY COMMISSION (7 77)

.J LI.C,ENSE,iE EVENT REPORT CONTROL BLOCK: l l

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121lWith Unit 2 in run mode and during the performance of the " RESIDUAL HEAT l lo l3l lHEMOVAL-TORUS SPRAY MODE" procedure, the Torus water temperature exceedec]

10141lthe 95 degree F limit of Tech. Specs. 3.6.2.1.b (actual temperature was l I o 151 197 degrees F).

The plant was placed in a 24-hour LCO per Tech. Specs.

l lolci13.6.2.1., Action b. The health and safety of the public were not l

l0l7llaffected by this non-repetitive event.

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31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i O lThe " RESIDUAL HEAT REMOVAL-TORUS SPRAY MODE" procedure should have l instructed the operator to throttle the spray valve. This would have I

i i ii,7i l minimized the heat loading rate. The spray valve was shut and cooling l

l continued until Torus water was 94 degrees F and decreasing.

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i 3 l procedure revision will be submitted.

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