ML19341A260

LER 80-037/01T-0:on 801230,during Subcritical Reactor Cooldown,Max Cooldown Rate Exceeded by 2 F.Caused by Operator Error.Allowable Cooldown Rate Established & Operator Counseled

ML19341A260
Person / Time
Site:	Peach Bottom
Issue date:	01/13/1981
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19341A258	List: ML19341A257 ML19341A260
References
LER-80-037-01T, LER-80-37-1T, NUDOCS 8101220483
Download: ML19341A260 (1)

Text

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REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h i :' i i While cooling down the suberitical reactor using RER shutdown cooling, l l 31 1 the mei== cooldown rate allowable by Tech Spec 3.6. A.1 was exceeded l

-!4II by 20F. When the excessive temperature decrease was discovered, shutdown i esl l cooling war secured for about one hour, then continued at an allowable l 3461I rate. The cooldown rate exceeded the Tech Spec limit by only 20 F for i o I7l 1 one hour. I s la l i I S 9 80 C DE COOE EU9C E COMPONENT CODE SUSCOOE SUB atol 8

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40 48 42 43 44 er CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

• i l0l l The excessive cooldown was caused by failure of the operator to pay I

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, ;7i j rate was established and the operator was counseled by the l l

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8 9 80 ST U  % POWER OTHER STATUS D85 RY DISCOVERY DESCRIPTION I

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M J. Cooney / (215) 841-5020 g NAME OF PREPARER PHONE: .