ML20086H090
| ML20086H090 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 10/21/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086H089 | List: |
| References | |
| AO-75-67, NUDOCS 8401130423 | |
| Download: ML20086H090 (1) | |
Text
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. s..,...:.- 4, n,.. n --.~ -- ~ - - -- ~m,a, --~n' . e.. PHILADELPHIA ELECTRIC COMPANY v, Peach Motton Atomic Power Station Delta. Pennsylvania l II31 October 21, 1975 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement' _s t U States Nuclear Regulatory Commission g d4/Y7M 631 Park Avenue King of Prussia, PennsWivania 19k06
Subject:
Aboormal Occurrence PL-Hour Notification Confirming'R. S. Fleischmann 's phone conversation with Mr. Walt Baunack, .. Region 1. United States Nuclear Regulatcry Conmission on October 21, 1975 ~
Reference:
Lice 5se Number DPR-56 P=ahn4eal Speci.ficmAdon
Reference:
Table 3.7.k i. Report No.: 50-278-75-67 Report Date: October 21, 1975 Occurrence Date ,0ctober 21, 1975 {' Facility: Peach Bottom Atomic Power Station R.D.
- 1. Delta, Pennsylvania 1731L l
I5entification of Occurrence: ,'l Excessive leakage thru the 1" - 276Y check valve in the nitrogen inerting system dryvell purge supply to penetration U-205B. Conditions Prior to Occurrence: Reactor power 555. i Description of Occurrence: DurinE local leak rate testing of the torus make-up supply isolation e check valve, it was found to leak in excess of 2000 cc/ min. .k. Designation of Apparent cause of Occu,rrence: , J. Under investigation. I, i Analysis of Occurrence: s The safety implications cf this occurrence are minimal beenuse
- manual isolation valve was closed when the leakage was detected.
i ^ Corrective Action: I s-To be determined after investigation. The nanual isolation valve was vcrified to be leak ti6ht in the closed condition. This valve ~ - will be naintained in the closed condition until repairs are 1, } - conpleted. i Failure Data: Abnornal Occurrence Report Numbers 50-277-75-33, 50-277-75-25 and i 50-2TT-75-1T. Very truly yours, M W. T. Ullrich, Superintendent Peach Botton Atomic Power Station N (Jus) e401%ho DR pDR -{. 6 l 5 i e p _. - -}}