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 Positi

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, 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

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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