ML20100N208
| ML20100N208 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/15/1985 |
| From: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20100N212 | List: |
| References | |
| NUDOCS 8504180442 | |
| Download: ML20100N208 (2) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 M ARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 SHIELDS L. D Al TROFF ELEctnic pm creose April 15, _1985 Docket No. 50-277 Mr. J. F. Stolz, Chief Operating Reactors Branch 14 Division of Licensing U.
S.' Nuclear Regulatory Commission 631 Park Avenue Washington, DC 20555
Subject:
Peach Bottom Atomic Power Station - Unit 2 Justification for Continued Operation following Current Refueling / Major Modification Outage
Reference:
Order Confirming Licensee Commitments on Pipe Crack Related Issues, J.
F. Stolz, USNRC, to E.
G. Bauer, Jr., PECO, November 30, 1983
Dear Mr. Stolz:
The reference confirmatory order permitted operation of Peach Bottom Unit 2 for a period of 4,100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> based on crack growth calculations and overlay repairs performed during the Summer 1983 outage.
Peach Bottom Unit 2 was subsequently removed from service, on April 28, 1984 for a refueling / major modification outage and is expected to return to service in late May, 1985.
Durt.ng this, outage the recirculation. system, residual heat removal system (RHR) suction and return piping within containment, a portion of RHR head spray, ten recirculation inlet safe-ends, two jet pump penetration seals and a portion of the reactor water cleanup system piping were replaced with material lean susceptible to intergranular stress corrosion cracking.
As required by the order contained in Paragraph III of the reference con:!irmatory order, the plans. for ' pipe replacement activities were transmitted to the NRC for review on March 6, 1984 via pgl letter, S. L. Daltroff, PECO to J.
F.
Stolz, USNRC.
0504100442 850415 ADOCK 05000277,
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Mr. J.
F. Stolz,iUSNRC April 15,'1985 Page 2cof 2 In further compliance with the requirements of the reference confirmatory order, specifically, the. orders contained in;ParagraphJIV, this letter transmits Philadelphia Electric Company's Justification for Continued Operation for NRC review
-and approval.-prior-to unit restart following completion'of the current outage.z
.The enclosed report is intended to be sufficiently; detail'ed.toLpreclude the necessity'of NRC-_ review of previous Philadelphia Electric Company to NRC correspondence relative ' to the mitigation of..intergranular stress corrosion cracking in primary system piping on Peach Bottom. Unit 2.
Should you. require any additional information,
- please do' not hesitate to contact us.
Very truly yours,
/
Enclosures cc:-
T. P. Johnson, Sit'e Inspector r
1 O
C.--
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