ML19276F353
| ML19276F353 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/27/1979 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 7903290043 | |
| Download: ML19276F353 (2) | |
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FRECELF'CA CE.7?!C CCMFAJY Pesch Bo't0= At',ni Pavar Stst ! :.
Delts. Penr;ylyw is 17312 February 2"*, 1977 Wr. Seyce R. GrLac Office of Inspection sad Enforcenent Region 1 D
n 631 Pstk Avenue 9,$ $
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United Ststes Nuclesr Pectintery Ce=miss ten 1
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ret. OP APLE OC"UPPENCE - FEMT.V.itFICN.IC"i Conf t---in.; V. T. ?!nrich's converntlen vi% Mr. Green *sn, "aelen I, 'Init-d Statas Nuclear Pequistory Cc n i n t n en 2/26/To.
Re ference :
Docket No.
050-2T7/278 Fesch Bottr.. Units 2 ani 3
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' Technien1 Spacifiestion Pererance:
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Report No.
2-T9-10/IP 3
Occurrence Dste:
Tebrusry 26, 1979 Identifiestien or OEcurrener,;
f A reviav or-safeguar1 cable routinsr Identille I six control sn1 six power cables which were it prepar17 <lesignsted as non-safeguard esbles.
Conditions Prior to Occurrence:
1 Units 2 und 3, both oparsting at full pcver.
- Apparent "*suse of Occurrence:-
to properly d$sI ns,e these esbles er safectsrd enblas Juring the Psilura 6
. design phsse.
Annissle of Occurrence;
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Durier the design phsee of the Pessb Bottcer Statien, the control and povar esbles to.'O-2-53.A. W.'2-53B, Peeir: PzTs 2A snd 29 Dischsrea Ynives respectively, +3-53A, %3-5'2 A and M2-3-53D. WJ-3-5hD, Feeire Purms 3A and 3B Dischstge Valves ani Dischsrga.15rssa Ysivas, were i properly designstel as non-asfer e.l.
The embles for all the ' A' nives shoald be dasignsted Za snd s'.1 the
'B' valves designsted 1".B.
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' Outside the priesry containre st-tha following coniiticns exist:
1.
'A' vsive esbles run in either ZA or non-nareguard receways.
2.
'B' valve cables -un in either ZD on nen-resfeausr-1 race vnys.
3 In two cases a control emble for both the A sad B vsive run in the ss=e ncn-safeg snr4 race way for a short distance in the cable spreading rocal.
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There is n2 cross routing between Unit 2 and Unit 3 cables.
The asfety significsnee of this event is censidered limited.
- 1 Corrective Action:
i The in:: ediate corrective actionn sre:
1.
The emble race vnys in the esble nprend ree t vare Identifled an 1 m full tina fire vsteh vss established.
2.
The esble rscavnys in the eight roois outside the emble spr-w! roem vere identified and s roving fire watch entsb119hed.
The tours of the cirht roens involve I are mile in approxientely ena hour.
A cicek route is being established and no burnin6 or velding ara allowed in the affected areas.
The per snant corrective setica is as follows:
1.
Cable rercuting and redesienstion is being desL6ned.
2.
New cable ' runs vill be mada as soon as praetleal, no ter-instiens src plsnned to be made at pcwer.
3 The terminatt:na an1 testing vill be performel Suring the next shutdevn of each unit.
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The time until the next shutdevn shall net exceed 90 days.
Previcas Failures:
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Cne, Report No. ~2-79-1/15 dated January k,1979 Very truly yours,.
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W. T. Ullrich, Superintendent Pesch Bott:a Atenic ' Fever Station t
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