ML20086G965
| ML20086G965 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/21/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086G964 | List: |
| References | |
| AO-75-18, NUDOCS 8401130095 | |
| Download: ML20086G965 (1) | |
Text
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PMIf.7.DELPIIIA D.PCIPIC CO::P/.?:Y Pooch I otton Atovic Pot:cr Ftc. tion
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/f t a,- Per:n syl w wt a 1
17314
" arch 21* 1973
.r..freen P. O'Reilly, Director Office of Inspection and Enforcenent Recicn 1 United St ntc o 1*nclear Pogulutory Corminof on f>31 Pcrh /.venuo l'in?, of Pro sia, l'ennsylvnaia 1M06 a
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- ' ' I' Stnten Nuclear l'.e3ulatorf Cot.lacion on March 20, IVid.
Reference:
License Nunber DP t-55
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__ __.._.. _ __ Technical-Specificarica-Refe renec:-Tchic-3 r2rA-Report l'o. :
50-270-75-18 l
m..i'oport.Dtto:
_ _ -r;:ts.20..1975 occurrence Date: - 1: arch 20,19?S Pacility:
Pecch notrea Atenic Power Station H.D. 1, Dolta, Pen::sylve.nia 17314 Identificatica of Occurrcace:
Pallure of a recetor icv eater Icvol cuitch LIS-3-2-3-573, icolatic.n cigent.
to provido a Group 1 Condition i Prior to Occurrenco:
l Unit 3 ne full po.cr.
l Occerf ntion of Occurrence:
' hiring a routina instru,cnt functional curve 11Inneo tect, t.IS-3-2-3-57B cvitch
- 1 failed to open to provide a Group 1 icolation cignal.
Decinnation of Apparent Ccuno of Occurrenco:
Sticking cultch contactc.
Analyais of Occurrence:
Tho co::panion cuitches in this logic were tected nucccenfully, theref ore, ths cafety icplicctions of thio failure are ninini because this evitch is connected in a one-out-of-tva twice logic and would not havo preventcJ cn isolation.
Corrective Actica:
The critch eas recoved, centceta cicaned, repicccd cnd tested in accordance with the cpplicchio calibratica typ2 curveillanco tent.
\\
Failuro Data:
No Previous failurce of this type.
Very truly yours, 6 <:t c[
/
- 11. T. Ullrich, Superintendent Pccch Ectton Ato31c Pouse Station 8401130095 750327
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