ML20215K348
| ML20215K348 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 05/07/1987 |
| From: | Muller D Office of Nuclear Reactor Regulation |
| To: | Farrar D COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20215K351 | List: |
| References | |
| NUDOCS 8705110163 | |
| Download: ML20215K348 (2) | |
Text
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May 7,1987 Dockets Nos.
50-295/304 DISTRIBUTION sDocket. File -
P. N. Randall NRC &' Local PDRs ACRS(10)
PD III-2 Rdg File PD III-2 plant Mr. D. L. Farrar D. Crutchfield file Director of Nuclear Licensing G. Holaha 3._'
Commonwealth Edison Ccmpany C. Vogan Post Office Box 767 J. Norris Chicago, Illinois 60690 OGC-Bethesda E. Jordan
Dear Mr. Farrar:
J. Partlow
~,
SUBJECT:
ZION NUCLEAR POWER STATION, UNITS 1 AND 2 - MATERIAL PROPERTIES FOR FRACTURE TOUGHNESS REQUIREMENTS FOR PROTECTION AGAINST PRESSURIZED THERMAL SH0CK EVENTS, 10 CFR 50.61 By letter dated January 17, 1986, the Commonwealth Edison Company (CECO) submitted information required by 10 CFR 50.61. The staff reviewed the submittal and found the copper and nickel contents unacceptable. A follow-up meeting on October 3,1986, did not resolve the issue and another submittal, including WCAP-11350, was received by letter dated December 29, 1986. The staff reviewed your December 29 submittal and again concludes that the reported values of copper and nickel content are not acceptable and that when is evaluated using proper values, the Zion Unit 1 vessel will reach the RT@ning criterion before the end of licensed life.
sc Our detailed evaluation is combined in the enclosed Safety Evaluation.
CECO, therefore, should submit plans for further flux reduction for Zion Unit 1.
The Zion Unit 2 vessel has the same controlling material, but the reported fluence is low enough to prevent reaching the screening criterion at end of licensed life.
Sincerely, Original signed by/
Daniel R. Muller, Director Project Directorate III-2 Division of Reactor Projects - III, IV, V and Special Projects
Enclosure:
As stated cc: See next page P
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[ /1 /87 8705110163 870507 PDR ADOCK 05000295 PDR g
Mr. D. L. Farrar Commonwealth Edison Company Zion Station cc:
Robert J. Vollen, Esquire Mr. Michael C. Parker, Chief 109 Nurth Dearborn Street Division of Engineering Chicago, Illinois 60602 Illinois Department of Nuclear Safety Dr. Cecil Lue-Hing 1035 Outer Park Drive, 5th Floor Director of Research and Development Springfield, Illinois 62704 Metropolitan Sanitary District of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 Mr. P. Steptoe Isham, Lincoln and Beale Counselors at Law Three First National Plaza Sist Floor Chicago, Illinois 60602 Mayor of Zion Zion, Illinois 60099 Illinois Department of Nuclear Safety ATTN: Manager, Nuclear Facility Safety 1035 Outer Park Drive, 5th Floor 4
Springfield, Illinois 62704 U.S. Nuclear Regulatory Commission i
Resident Inspectors Office 105 Shiloh Blvd.
Zion, Illincis 60099 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 I
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