ML20086K566

Telecopy AO 75-2:on 750115,leakage Found on Inboard Main Steam Line Sample Isolation Valve.Cause Unknown.Valve Will Be Repaired

ML20086K566
Person / Time
Site:	Peach Bottom
Issue date:	01/16/1975
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086K564	List: ML20086K561 ML20086K566
References
AO-75-2, NUDOCS 8401270260
Download: ML20086K566 (1)

Text

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O ' PHILADELPHIA ELECTRIC 00*COMJ hw Peach Botton Atomic Power Station

-Deltar-Pennwylvani. l 17314 i

Mr. James P. O'Reilly, Director January 16, 1975 United States Atomic Energy Co= mission i Directornte of Regulatory Operations 631 Park Avenue King of Prucsia, Pennsylvania 19406 4 Subj ect :

Abnort.11 Occurrence 24-Hour Notification i Confituing W. T. Ullrich's phone convercation with Mr. Don Caphton, A.E.C. '

Region 1 Regulatory Operations Of fice, on January 16, 1975.

Reference:

License Number DPR-44 O Technical Specification

Reference:

3.7.D D Report No.: & s 50-277-75-2 '

Report Date: January 16, 1975

% ^h Occurrence Date: January 15, 1975 {E og dgf

, 22 Facility:

Peach Botton Atomic Pover Station "

A Q

R.D. 1, Delta, Pennsylvania 17314 cc',geNr 4.j c/

Identification of Occurrence:

Leaking Unit 2 inboard cain stema line sacple isoir. tion valve.

4 to /, / -

Conditions Prior to Cccurrence:

The reactor was shutdown; caintenance outage in progress.

D:ceription of Occurrence:

As a result of perforr.ing a leen1 1-nk rate teet, it was discovered that the inboard cain occata line cceple isolation valve dirl not seal tightly. The outboard isolation val"e was closed.

Designation of Apparent Cause of Occurrence:

. Unknown et this tino. Invcutination in progress.

Analycis of Occurrenco:

The other isolation valve in thia line tras verified to seal properly and vns left in tha cloced pocicion. For this reason, the occurrence ,hsa minical safety inplicaticas. "

Correctiv6 Action: - -

Valve vill be repaired as required.

Failure Data:

Previcus failuren of this type vero reported an Abnornst Occurrence Report Numbers 50-278-74-15 and 50-278-75-1.

11

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Very truly yours, 8401270260 750125 ul *r PDR ADOCK 05000277

[N MM. ,g S PDR

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W. T. Ullrich, Su: rintendent Peach Bottom Atonic Power Station COPY SENT REGION m

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