ML20028D953

LER 82-007/03L-0:on 821211,during Mode 5,review of Strip Chart Recordings of RCS Temps During Filling & Venting Operations on 821210 Indicated RCS Heatup Rate Exceeded. Caused by Inadequate Attention to Heatup Restrictions

ML20028D953
Person / Time
Site:	San Onofre
Issue date:	01/08/1983
From:	Ray H SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20028D952	List: ML20028D951 ML20028D953
References
LER-82-007-03L-02, LER-82-7-3L-2, NUDOCS 8301200120
Download: ML20028D953 (1)

Text

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DO EVENT DESCRIPTION AND FRoBABLE CONSEQUENCES h 10121 l While in Mode 5, a review of strip chart recordings of the RCS temperatures during i io i3 i i filling and venting operations performed on December 11, 1982, indicated that the I io i4 l l RCS heatup rate had been exceeded. The requirements of the applicable LC0 3.4.8.1 l io is j l indicated that the effects on structural integrity and the fracture toughness margin l l0 je l l were not compromised and normal plant operations could proceed without restriction. l

[TJT] l There was no impact on the health and safety of plant personnel or the public l iO ie i i associated with this event. I 7 8 9 C DE CODE S8 E COMPONENT CODE SUB D'E SU E g I C l E l@ [ Aj@ EJ@ l Z l Z l Z l Z l Z l Z l@ [Z_J@ 18 19

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_ 21 22 23 24 26 27 ME H HOURS 22 SB t FOR 8. Li R MAN F CTURER T KEN A T ON ON PL NT l0l0l0l l W@ [Njg [Zjg l Z l 9 l 9 l9 lg lH 3J g l34H l g [36Zjg l36Zl@ 37 40 41 42 43 44 57 CAUSE DESCR6PTIC N AND CORRECTIVE ACTIONS h ji iOi l This event was caused by inadequate attention to heatup restrictions. Responsible l

, , l Operations personnel have reviewed the circumstances and have been directed to more l

, 7 l closely monitor the RCS vent and fill' operations and all operations involving RCS I

, l heatup and cooldown. Th'is will be included in their monthly retraining session. l l Additionally, fill and vent procedure 5023-3-1.4 is currently in the revision processI .

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