ML20028G207
| ML20028G207 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 01/20/1983 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-2-83-2-1P, NUDOCS 8302070520 | |
| Download: ML20028G207 (2) | |
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D"SIGNATED ORIGIUAL
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Certified By 7e d i
4 PHILADELPHIA ELECTRIC COMPANY PEAc88 SoTTOM AToteDc MMWEst sTATBo88 n.o.s. sox see i
DELTA.PEM90sYLVANSA E7394 January 20, 1963 5
Mr. R. C. Haynes administrator U.S. Bhaclear Regulatory Comunission j
negion I
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631 park Avenue King of Prussia, PA 19406 i
SCHLTECT:
REPORTABLE OCCUnne-r - PaQstPT NOTIFICATION Confirming S. R. Roberts' telephone' conversation with A. R. Blough, Region 3, United States maclear leagulatory hi==ian on 1/20/83.
References Docket No. 50-277 l
Peach Bottoms thit' 2 Technical specification 3.7.D.3 1
asport No. 2-83-2/1D Causswace Date:
1/20/83 l
l Identification of he During a routiae surveillance in the control room, the indie= ting i
lights for the.RCIC iaW-d steen supply isolation velve tsare found j
not Lit.
T W i=te investigation deter =fnad that the feed breaker for the valve had been mistakenly opened during the app 1f cation of a block.
The breaker taas then closed to restore posser and indication to the valve.
Since the valve esas in the open position during the,
time the feed br==1 raw was open, it tses rot capable of closing if it-had received an isolation signal.
During that time, the r=d=* te isolation valve was not in the closed position as required tehen an isolation valve is i=~ -rable.
that'if the r=Mandant isolatics The Technical Specifications require ha j shutdown be initiated.
valve is'not closed'that en orderly'.
An orderly shutdown tras not begun becense the
@g,
eandition was not found for approximately one hour.
"O 4
$8 M 4tions Prior to Occurrencer en O
gg Unit 2 operating at full power, i
nu 03@
Apparent cause of Occurrences o<
mg An operator was applying a block to remove the Reactor Meter clean-Op System from service.
n.m He mistakenly removed the feed from the BCIC et supply v.1ve daring the app 11 tica of thee dieck.
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i Analysis of Occurrence While the inboard steam supply valve on RCIC was inoperable due to the feed breaker being open, the outboard steam cupply valve was tully operable and would have perforined the isolation function if an isolation signal had been' received.
That fact, coupled with the j
uhort duration that the inboard valve did not have teolation capability, makes the safety significance of this event minimal.
corrective Actions f
Mwn the control room operator found the indicating lights on the RCIC steam supply valve not lit, an immediate investigation was undertaken and the feed breaker was insiediately reclosed.
9eevious occurrences j
Mne.
t Very truly yours, I
W. T. Ullrich station superintmanant 8
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