ML20086L000

Telecopy AO 74-3:on 740125,electrical Fault Found on Diesel Generator E-4 Current Transformers.Caused by High Water Level in Cable Chase.Cable Chase Drained,Current Transformer Replaced & Electrical Tests Conducted

ML20086L000
Person / Time
Site:	Peach Bottom
Issue date:	01/25/1974
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086K994	List: ML20086K990 ML20086L000
References
AO-74-3, NUDOCS 8402070111
Download: ML20086L000 (1)

Text

_

2/] *"

• j g

• Janusry 25. 1974 .

Mr. Jaiec P. O'Reilly, Director , p ,

United Sintes f.temic Encyc/Conniccicn Directorate of Recult. tory Operations M ,g, d. ..

631 Park Avenue King of Pruccin. Ferairylvania 1946 >

Subiect: Abnor- J Occurrence 24-Rour florification Confirning cy telephone convercation with Mr. R. A. Feil, A.E.C. Region 1 Reguistory Operations of: ice on January 25. 1974. ..

Referenec: Licence !!urber DPR-44, A.,endnent Number 1, Technical Specification Table 31.1 Report 1lo. 50.277-74-3 Report Date: 1/25/74 -

Occurrence Date: 1/25/74 -

Facility: Peach Botto: Ato:ic Power Station - Unit 2

- R.D.1, Delta, Penncylvania 17314 Identification of Occurrence:

Elcetrical fault on E-4 Diesel Generator current trarefomera.  ; .

i Conditions Prior to occurrence:

0 Renetor criticci, very lov pe"er, vented at 160 F reactor coolant torporature.

Description of Occurrence: -

Relays initiated generator trip during a surveillance test. -

~

Designatica of' Apparent Cause of Occurrence:

Fault cauced by high water level in cable chase.

Analycic of Occurrence:

E15 h water level due to seepage into cable chace area of water draining to ficer drain from defective leaking ete r cyste: .

condennate return purp. .. .

^

Corrective Action: .

Drain cabic chase. Replace current transforcers. Enke applicable electrical tectc. Co plete curroillence testa. Assure that cabic chnee cannot ' fill with vnter in the future. ..

Failure Date:

I;o previous. .

,1 +

A V. T. Ullrich, Superintendent ' '),

Peach Botto. Atomic Power Station q*

[* t <,b' 8402070111 740204 PDR ADOCK 05000277 S PDR

~

- . O O MEMO ROUTE SLIP 5 a m * * '<~ ' "' * - ' a' c aac "*

• c '- Fa' ac t'ca.

e o,,,, u r.., < 8,.

u.g 4. e,i,,

w sio2.o eu,, . 4 . .. . . ,,,,,1, .. .. , r o, i ,, ,- . .

i 1o e .+. .a o .o ...n.ts R M.. s l ROChief,FS&I/> PIIIIADELPilIA ELECTRIC CO.

RO:llQ (4)

/

RO Files Dan PEAcil BOITOM 2 DR Central Files Directorate of A0 74-3 To c . . .,a .e.n mitm.3 RtM Ras Licensing (4) The above A0 is forwarded for information.

OCC Dart Distribution will be made by this of fice to the PDR, Local PDR, NSIC, 17FIE, and State T O P.ame anJ watt) INTIAL5 REMARKS

. Representatives.

DATE F ROM (N.m, and unit) REMARKS y s w-p, v

a'<. n js II. J. Brunner ---

Region I PHONE pedL DATE 8-337-1246 1/29/74 USE OTHER SIDE FOR ADD 4flomaL REM APK$ Cro : 19710 44% 499

.q

'f 33 n v n a:.m a 29 ,, ,,

.'23A9anaag.,:g,;.j0g 2 P 6 r.y I 633 pza 03Al333y

.