ML20086F989
| ML20086F989 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 09/30/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-75-63, NUDOCS 8401090761 | |
| Download: ML20086F989 (1) | |
Text
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CC!/P AN Y PHILA0ELPHI A E* IOTRIC Station Ate:Ac Power l
Pea-h Lotton Per.naylvania 1975
- Delta, September 30.
17314 O'Reilly," Director w&-
Mr. Janes P.
and Enforce =ent Ds10 -
Office of Inspection hd suelear Begulatory Conmission d tates 19 O6 631 Park Avenue Pennsylvania k
King of Prussia, Notifiestion l'.
Hour Abnnrnal C e e u r r er.e e with Mr. Valt Baunach.
Subject:
conversationCoccission on September 29, 197, Confir=ing V. T. U11 rich's phone Region 1 United State.s nuclear Regulatory Number DPR LL 3.7.D License Technical Specification References
Reference:
SC-277-75-63 Report No.:
September AG, 1975 Report Date:
29, 1975
. Occurrence Date:
SeptemberBette= Atc=ie Power Station Peach Pennsylvania 1731k Facility:
R.D.
1
- Delta, 4
Identification of Occurrence:
Fast closure of MSIV c60 and 660.
Conditions Prior to Occurrencesapproximately hp5 power.
l Unit 2 operating at valves and D outer isolation Description of Occurrence:
the C Closure surveillance test 1.7 seconds and 2.3 seconds respectively.is gre During a routine on Unit 2 closed in the Technical Specifications
]
time as specified in 3 seconds, but lecs than 5. seconds.
f Cause of Occurrence:
Designation of Apparent fluid in valve actuator.
f Insufficient hydraulic 2 of the 9/29/75 indicated thatclosure vbile Analysis of Occurrence:
perforned on The surveillance test fast by about 1 second.
This fast significantly change S
8 MS1V's closed not approximately L9% pcVer vouldin the reactor vessellittle i
isolation if an operating at reached the maxicu= pressure therefore, has occurred.
This occurrence, I
to adjust cicsing speed j
fluid vas added and ad'ustments =ade Actien:
Corrective l-to 3 75 and 3 5 seco=ds for valves 86C and 863 respectively.
Hydraulic reported on Abnormal c'ecurrenet Failure Data:
cf this type was A previous occurrence Nu=ber 5 0-277-7 k-7 and 5c-277-75-29 Very truly yours, M M da~ Y W. T. Ullrich, Superintencent f
Peach Botto: Atcsic Power Statior.
i I
(cea) 8401090761 750930 PDR ADOCK 05000277 S
PDR 6
4