ML20086K959
| ML20086K959 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/21/1974 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086K950 | List: |
| References | |
| AO-74-5, NUDOCS 8402070090 | |
| Download: ML20086K959 (2) | |
Text
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PHILADhlall A EUC7kl0 COMPC:'
i Pench TRatfor Atomic Power Stat Delt a. Pennnylvnnin
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Tebrusry 21, 197k Mr. Onr.en P. O'keilly, D2 rector cJ/f-3 37 -// fD Unit ed St aten Ato-ic Erarcy Cor.riction g Ut')
Direct ornt e of Recair. tory Operat 2or.c 631 Pnr): Avenue
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1 ir.g of Prur.r.ir., Penncylvanin 19406 D.:b. lee t :
Abnor.1 Decurrence Pk-Unur l'otifiention Confirr.ing cy telephor.e cor.verration with Mr. 70.1 Shed}owrJ:y, A.P.C. Begior.1 Pegalntory Operntionc Office on Tebruary 21, 1974.
Referenet:
1,1cence );urber DPR 44, A'endr.ent Kurber 1, iB 7echnien1 Crecifiestion Section 4.5.A M.,
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heport )lo. :
50-277-74.S p[hh Report Dat c :
2/21/74
/j Occurrenee Th.te:
2/2D/74 racility:
Pench Battor Atcmic Pover Stt tion - Unit 2 e3 ~- 4
- h. D. is Deltn, Penney)ve.nis 1731k w:.. y 3dentifier. tion of Occurrence:
myn.C ISR Re19y 3DA-1;?.3.A f ailed t o perforn itc decirn functio:: in the Rw.
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"A" 1.coyr Se)eet locie
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,.g Conditior.c Prior to Occurrencet Ur,it 2 Cencrator cross Sond P30 L', Unit 2 reactor BSD W therna).
u 1. 4 Pir.nt conditior.c vore atcble.
vf.dQ
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lveriptice of 0:currer.ce:
INN Daring norr..1 rurveinence ter ting of the "A" kilk logie Sycte.. Re3ny fj.R i. i 10A-):33A $ci3(5 to tranc.it voltr.ge nerocc itc contacic and therefore up===E the loop cc)cetion 30cic sequence could not be corpleted.
Decipr. tion of Apprent Cnure of Occurrence:
'Tne reir:y c',oi) did energire, but the relay contnetc did not trar.r.it the voltr.re.
A dirty contcet or n foreign dirt psrticle npprcntly ecuced the fr.D ure.
An.)ycit of Occurrence:
Tuilure of the 10A-X3% reiry to functior, vould prevent the "A" PR f
Iopic from. celectinc n ) cop for injection.
However, the "B" M!E 3or.ie !
vould perforr. thic function and th< refore the logic cyctem vac not h,,f.
D DP*'
8402070090 740228 i
PDR ADOCK 05000277
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Corrective Action:
S PDR y
7r,e reiny contt.cte vere cleaned and the reiny action chechcd by reloy technicinnr.
After thit vork vnr. corplet ed, the reiny perforned
. c.9 t i e f n e t or D y i n t he,RHH hoop Sel e c t lor,.i c.
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MEMO ROUTE SLIP 5" '" ' b a ' '"' * -
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For leform ation.
Form AIC-9 4 ( Res. Mai 14.19 4t p AILM n240 No'e and retura i
TO (Name 493 WNt) thifiALS REMARR$
RO Chief, FS&EB PilILADELPilIA ELECTRIC, PB-2 RO:llQ (4)
DL (4) oATE A0 50-277-74-5 RO Files DR Central Files TO (Name acd uniti IMITI ALS REMARK $
OGC The above A0 is forwarded for information.
Distribution will be made by this office to the oArt PDR, Local PDR, NSIC, DTIE, and State 10 (Name and unit) thlilALS REMARn$
Representatives.
oATE F ROM (Name and wa.tl REMARas i N p ' n.> r c.y E. J. Brunner Region I PHONE NO.
DATE 8-337-t246 3/4/74 USE OTHER $4DE FOR ADDITION AL REM ARKS cro s tain o. ges.esa i
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9 k
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