05000334/LER-1980-004-03, Revised 80-004/03L-1:on 800123,during Routine Tech Spec Review,Radiation Monitor Setpoints Found Less Conservative than Mode 6 Requirements.Caused by Personnel Error.Change Added to Mode 6 Checklist: Difference between revisions

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{{Adams
#REDIRECT [[05000334/LER-1980-004-03, /03L-0:on 800123,radiation Monitor Setpoints Less Conservative than Those Required in Mode 6 During Refueling Operations.Caused by Personnel Error.Reactor Vessel Head Studs Detensioned]]
| number = ML19344D283
| issue date = 03/04/1980
| title = Revised 80-004/03L-1:on 800123,during Routine Tech Spec Review,Radiation Monitor Setpoints Found Less Conservative than Mode 6 Requirements.Caused by Personnel Error.Change Added to Mode 6 Checklist
| author name = Werling J
| author affiliation = DUQUESNE LIGHT CO.
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
| docket = 05000334
| license number =
| contact person =
| document report number = LER-80-004-03L, LER-80-4-3L, NUDOCS 8003110632
| package number = ML19344D281
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = Revised 80-004/03L-1:on 800123,during Routine Tech Spec Review,Radiation Monitor Setpoints Found Less Conservative than Mode 6 Requirements.Caused by Personnel Error.Change Added to Mode 6 Checklist
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000334
| LER year = 1980
| LER number = 4
| LER revision = 3
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
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+o 2 VENT OESCRIPTICN AND PROR ABLE CONSEQUENCES h j
l o 121 l Radiation monitor setpoints less conservative than those reouf red in Mode 6
(< 14, l
1 toi3t]RCS Temp) during refueling operations. The reactor vessel head studs were 1
[TTR [detensioned but no other evolutions had taken place. The problem was disenvered I
l o i s i Idurinc a routine technical specification review. The instruments involved are l
l o u i IContainment Area Monitors RM-215A.il and Purne Exhaust Prneess Monitors RM-VS-104A.11. l l 0 ( 7 l lThe setpoints were approximately a decade high but the instruments were operable in I toi3! l respect to their intended function. Therefore, there were no (continued on attached)l 80 1
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==CAUSE==
CAUSE COV8 VALVE COOE COOE SLuCODE COUPONENT COOE SUSCOOE SU8 CODE 10l+1 I B I A l@ ( A j@ l X l@ l Z l Z l Z l Z [ 7. l 7. l@ l Z l@ l Z 1 @
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It was not readily apparent that this chance was to be effective l
l tillso it was not added to the Mode 6 (RCS Temp < 140F) checklist. The channo has now I
,;,jbeen added to OST 1.49.3, Refueling Operations Prerequisites Checklist.
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t' Attachment To I.ER 80-O'./01L-1 Ileaver Va I ley I'ower St at ion Duquesne Light Company Docket No. 50-33'.implications to the health and safety of the general public.
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Latest revision as of 07:51, 2 January 2025