ML20086G890
| ML20086G890 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 05/30/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086G888 | List: |
| References | |
| AO-75-32, NUDOCS 8401120576 | |
| Download: ML20086G890 (1) | |
Text
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PHILADELPHIA ELECTRIC C, JANY
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. Pcoch Botten Atonic Pouar' station.
p*-
n Delta, Pennsylvanim
.f,.
17314
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May 30, 1975*
Mr. Jans:P. O'Reilly, Director-Officcmof Inspection and.Enforcc= cut.
Ror, ion: 1, United. :S tatec Nuclear. Regulatoryc, Co=:tission....
631 Park Avenue
'Kinr of. Prussia, Pennsylvanis 19406 Subiect:
Wanorr'al Occurrence,24-Four Notification
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Confiratna:J. F. Fran::? phonec converanticn with Mr.. Don. Caphton c RegioniA United-
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.Ste toe-Fuc1mr-.Wukzo::e-C.~.= ".--aic cn-L".u-J.M373 g-
. = u-r.-- - m m
'Refercncc6 Licennelie-bor.DPR-56 3
Technical Specification.Referencen Table 3.2.A
.. _:3
--.=c.-
. - - _ - = - =.. _. - - -
. :- g.--.g.- :. =:- - :.- - ---- ;.
.r p.nport. cute-zy a, a-M, c -
Occurrence Date: May.29, 1973 Facility:
Peach Lotte,n Atenic Pouer Station R.D. 1, Ecita, Pennsylvanio.17314 Identification of Occurrence:
railure of the tecperature sensor v TE-3-12-93, uhich provides the tc=perature.
r,f2nni to the h :ector Ucter. Cloanup. Sycten High: Ict.perature. Isolation. S,.-itch.
Canditions Prior to occurrence:.
Unit 3 at full pcacr..
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Deceription of Occurrence:
Durin;; c. routine inst rument. surveilL.nce test,. it was. discovered that. there vas no
_.tcr:perature input to the IWCU High Tatu.erature Isolation Sritch.. -
4 Deninne. tion of 1. ppt. rent Cauce of Occurrence: :
Failera of tho te.=perature elenent prirc.ry sencor.
Analysic cf Occurrence:
Snfety niir.ificance of thie, in-ident in tricital$. The. function of thin uvitch la t:
i prevent. d: ten,c. te the dr inerali=gr raci-. frc.n high te=porctero. by isolatin ; the cyrten uhon the.denineraliner inlet vator torpcrature rrcchca 14C4F.
Cc,rrective Action:
The reactor satcr elecnup cyste:n:.eas isolated and the defective temerature censor ua::, rapicced.
The witch van enlibrated in c.ccordance s;ftn A, surveillance t' c t.
preced.ure and chen ihn reactor.vaccr cleanup, cycten una returned to s:m ice..
e Failure Data:
l No previous failurou of these to:.perature elecants..
e a
g se Lb',$* Ca c *, :.;*.e i'.c r. in nch,.Supert nuncent
. ef =t ekt k'J C T.C D At O'".7.C PO'.Jer Station.
8401120576 750613 PDR ADOCK 05000278 S
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