05000334/LER-1981-006

Updated LER 81-006/03X-1:on 810108,during Surveillance Tests on Low Head Safety Injection Pumps,Water in Recirculation Line on Refueling Water Storage Tank Found Frozen.Caused by Heat Trace Circuit Thermostat Line in Off Position

ML20054M075
Person / Time
Site:	Beaver Valley
Issue date:	06/28/1982
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20054M063	List: 05000334/LER-1981-006, Forwards Updated LER 81-006/03X-1.Detailed Event Analysis Encl
References
LER-81-006-03X, LER-81-6-3X, NUDOCS 8207090218
Download: ML20054M075 (1)

LER-2081-006,

Event date:
Report date:
3342081006R00 - NRC Website

text

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UPDATE REPORT - PREVIOUS REPORT DATE: U. S. NUCLEAR REGULATCRY COMMIShlON NRC, FORM y6 Februarv 6 198 1 LICENSEE EVENT $EPORT lh CONTROL BLOCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) i e l 011a l3 l P lLICENSEE 7

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ORT DATE 7 8 60 61 DOCK ET NUMBER 68 69 EVENT DATE EVENT OESCRIPTION AND PROBA8LE CONSEQUENCES h

! o l 21 l With a reactor start-up in proeress. a surveillance test was beine nerformed on l

[o la1 i the low head safety iniection nunns when the water in the common recirculation linel 10141 l on the Refueline Water Storane Tank was found frozen. In accordance with Technten1l lo is] l Specification 3.5.3. both punos were declared inoperable at 1850 hours0.0214 days <br />0.514 hours <br />0.00306 weeks <br />7.03925e-4 months <br />. The i 10lsl l emergency core cooling flow path was unaffected by this blockane and the high head l l0l7l l safety injection pumps were available. The health and safety of the general public l l o Is I l was not jeopardized. I SYSTEM CAUSE CAUSE COMP. VALV E CODE CODE SU8 CODE COMPONENT CODE SU8 CODE SUSCODE la191 7 3 l Sl Fl@ lD l@ l Z l@ l Z l Z l 7. l Z l Z I Zlh l Z l@ l Z l @

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47 CAUSE OESCRIPTION AND CORRECTIVE ACTIONS h lilall The heat trace circuit thermostat for the frozen line was found in the OFF l-11 lil I position. The thermostats were set immediate1v and the line thawed. At 1048 hours0.0121 days <br />0.291 hours <br />0.00173 weeks <br />3.98764e-4 months <br /> l li l 21 l on 1/9/81, the punos were declared onerable. An investiention of other sa fetv- 1 li13l l related heat tracine was initiated and their onerability verified. I I

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