ML20245G109
| ML20245G109 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/10/1989 |
| From: | Dromerick A Office of Nuclear Reactor Regulation |
| To: | Fitzpatrick E GENERAL PUBLIC UTILITIES CORP. |
| References | |
| GL-88-11, NUDOCS 8908150210 | |
| Download: ML20245G109 (3) | |
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UNITED STATES
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August 10, 1989 Docket No. 50-219 Mr. E. E. Fitzpetrick
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Vice President and Director i
Oyster Creek Nuclear Generating Station l
Post Office Box 388 Forked River, New Jersey 08731
Dear Mr. Fit:
patrick:
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SUBJECT:
RESPONSE TO GENERIC LETTER 88-11 On July 12, 1988, the NRC issued Generic Letter 88-11, "NRC Position on Radiation Embrittlement of Reactor Vessel Materials and Its Impact on Plan ~t Operations." Tha stated purpose of the Generic Letter was to call attention to Revision 2 of the Regulatory Guide 1.99, " Radiation Embrittlement of Reactor Vessel Materials." Licensees were directed to use the methods described in Revision 2 to Regulatory Guide 1.99 to predict the effect of neutron radiation on reactor vessel materials as required by paragraph V.A. of 10 CFR Part 50 Appendix G, unless they can justify the use of different methods.
In addition, licensees were requested to respond with the results of a technical analysis of the impact of Revision 2 on their facility and whatever actions they propose to take.
By letter dated July 26, 1989, you responded to Generic Letter 88-11.
In your letter you stated that GPUN submitted new P-T operating curves for operation beyond ten (10) effective full power years (EFPY). The new P-T curves were developed based on the surveillance capsule results and on the draft Rev. 2 of Regulatory Guide 1.99. The new curves were approved by the NRCTtaff and were issued on March 21, 1988 as Amendment No. 120 to the Oyster Creek Technical Specifications.
Safety Evaluation written by the NRC staff for Amendment 120 concludes that "the licensee has applied appropriately Regulatory Guide 1.99, draft Rev. 2, 10 CFR 50 Appendix G and Standard Review Plan 5.3.2 to calculate the adjusted RT and to develop the pressure-temperature curves."
NDT In addition, you indicated GPUN has recently completed evaluation of P-T limits using the calculational methods identified in the final Rev. 2 of Regulatory Guide 1.99. The results indicate that the impact on the Oyster Creek P-T curves is a 40*F increase at 15 EFPY. The Amendment 120 curves were developed using an Adjusted Reference Temperature (ART) of 125*F. As a result of the recent evaluation, the ART estimated for 15 EFPY is now 129 F.
Your further indicate that 15 EFPY will be reached toward the end of the second quarter in 1994 (approximately middle of Cycle 14). Therefore, you stated that another set of P-T curves will be generated and submitted by the end of 13R.
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Mr. E. E.:Fitzpatrick The staff has reviewed.this information and ' considers your commitment
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L Letter 88-11 are fulfilled..
Sincerely, original signed by Rond1d flernan for Alexander W. Dromerick, Project Manager-Project Directorate I-4.
Division of Reactor Projects'- I/II.
Office of Nuclear Reactor Regulation ec: 'See next page-DISTRIBUTION.
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Mr. E. E. Fitzpatrick Oyster Creek Nuclear Oyster Creek Nuclear Generating Station. Generating Station cc :.
Ernest L. Blake, Jr.
Resident Inspector Shaw, Pittman, Fotts and Trowbridge e/o U.S. NRC 2300 N Street, NW Post Office Box 445 Washington, D.C.
20037 Forked River, New Jersey 08731 J.B. Liberman, Esquire Commissioner Bishop, Liberman, Cook, et al.
New Jersey Department of Energy 1155 Avenue of the Americas 101 Commerce Street L-New York, New York 10036 Newark, New Jersey 07102 i
Jennifer Moon, Acting Chief Regional Administrator, Region 7 New Jersey Department of Environmental U.S. Nuclear Regulatory Commission Protection 475 Allendale Road Bureau of Nuclear Engineering King of Prussia, Pennsylvania 19406 CN 415 Trenton, New Jersey 08625 BWR Licensing Manager GPU Nuclear Corporation 1 Upper Pond Road.
Parsippany, New Jersey 07054 Deputy Attorney General State of New Jersey Department of Law and Public Safety 36 West State Street - CN 112 Trenton, New Jersey 08625 Mayor Lacey Township 818 West Lacey Road Forked River, New Jersey 08731 Licensing Manager Oyster Creek Nuclear Generating Station Mail Stop: Site Emergency Bldg.
P. O. Box 388 Forked River, New Jersey 08731 i
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