ML20214X056
| ML20214X056 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/02/1986 |
| From: | Vissing G Office of Nuclear Reactor Regulation |
| To: | Campbell G ARKANSAS POWER & LIGHT CO. |
| Shared Package | |
| ML20214X057 | List: |
| References | |
| REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8612100521 | |
| Download: ML20214X056 (2) | |
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December 2,1986 v
Docket No. 50-313 Distribution: Docket File NRC & L PDRs Branch Files RIngran GVissing CMcCracken GEdison Mr. Gene Campbell LLois NRandall Vice President, Nuclear FMiraglia ACRS Operations OGC Edordan Arkansas Power and Light Company JPartlow BGrimes-P. O. Box 551 Little Rock, Arkansas 72203
Dear Mr. Campbell:
Subject:
PROJECTED VALUES OF MATERIAL PROPERTIES FOR FRACTURE TOUGHNESS REQUIREMENTS FOR PROTECTION AGAINST PRESSURIZED THERMAL SHOCK EVENTS We have reviewed your submittal dated January 22, 1986, which was in response to the Pressurized Thermal Shock (PTS) Rule, 10 CFR 50.61, for Arkansas Nuclear One, Unit 1 (ANO-1). We have found the material properties of reactor vessel beltline materials, the projected fluence at the inner surface of the reactor vessel -for the present end of license (EOL) and for 32 effective full power years (EFPY) and the calculated RT for the present E0L and for 32 EFPY to be acceptable. The calculated RT SIbbelow the screening criteria of 300 F at boththepresentE0 Land 32EFNband, therefore, meets the requirements of the PTS Rule.
The PTS Rule reouires that the projected assessment of the RT must be updated whenever changes in core loadings, surveillance measubents or other information (including changes in capacity factor) indicate a significant change in the projected values. This ensures that the licensees will track the accumulated fluence for the limiting beltline materials throughout the life of the plant to verify that their assumptions remain valid.
In this regard, we request that you submit a reevaluation of the RT and comparison withthepredictedvalueinanyfuturePressure-TemperatureIbbmittals p
which are submitted as required by 10 CFR 50, Appendix G.
Our associated Safety Evaluation is enclosed.
Sincerely, l
/S/
Guy S. Vissing, Project Manager
]
PWR Project Directorate #6 Division of PWR Licensing-B
Enclosure:
As stated cc w/ enclosure See next page lllt/
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Mr. G. Campbell Arkansas Power & Light Company Arkansas Nuclear One, Unit 1 cc:
Mr. J. Ted Enos, Manager Nuclear Engineering and Licensino Arkansas Power & Light Company P. O. Box 551 Little Rock, Arkansas 72203 Mr. James M. Levine, Director Site Nuclear Operations Arkansas Nuclear One P. O. Box 608 Russellville, Arkansas 72801 Mr. Nicholas S. Reynolds Bishop, Liberman, Cook, Purcell & Reynolds 1200 Seventeenth Street, N.W.
Washington, D.C.
20036 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Divisinn Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 2090 Russellville, Arkansas 72801 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Mr. Frank Wilson, Director Division of Environmental Health Protection l
Department of Health Arkansas Department of Health 4815 West Markham Street Little Rock, Arkansas 72201 Honorable William Abernathy i
County Judge of Pope County Pope County Courthouse l
Pussellville, Arkansas 72801 n_