ML20211P191
| ML20211P191 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 12/15/1986 |
| From: | Oconnor P Office of Nuclear Reactor Regulation |
| To: | Schnell D UNION ELECTRIC CO. |
| Shared Package | |
| ML20211P196 | List: |
| References | |
| REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8612190002 | |
| Download: ML20211P191 (2) | |
Text
w Docket No.: 50-483 Mr. D. F. Schnell 15 DEC 1986 Vice' President - Nuclear Union Electric Company Post Office Box 149 St. Louis, Missouri 63166
Dear Mr. Schnell:
Subject:
Projected Values of Material Properties for Fracture Toughness Requirements for Protection Against Pressurized Thermal Shock Events We have reviewed your letter dated January 21, 1986 which was submitted in re-sponse to the Pressurized Thermal Shock (PTS) Rule,10 CFR 50.61, for the Callaway Plant. We have found the material properties of reactor vessel belt-line materials, the projected fluence at the inner surface of the reactor vessel for the end of life of the plant, and the calculated RT for the end isbblowthe P
of life of the plant to be acceptable.
The calculated RT screening criteria of 270 F at 32 EFPY which is beyond thgThxpiration date of the license and, therefore, meets the requirements of the PTS Rule.
The PTS Rule requires that the projected assessment of the RT must be up-datedwheneverchangesincoreloadings,surveillancemeasurebtsorother 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 re-evaluation of the RT and c;mparison with the predicted value in any future Pressure-Temperature sbbmittals which p
are submitted as required by 10 CFR 50, Appendix G.
Our associated Safety Evaluation is enclosed.
Sincerely, Paul W. O'Connor, Project Manager PWR Project Directorate #4 Division of PWR Licensing-A
Enclosure:
As stated cc w/ enclosure: See next page Distribution:
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4 Mr. D. F. Schnell Callaway Plant i
Union Electric Company Unit No. 1 CC:
Mr. Nicholas A. Petrick Lewis C. Green, Esq.
Executive Director - SNUPPS Green, Hennings & Henry 5 Choke Cherry Road Attorney for Joint Intervenors Rockville, Maryland 20850 314 N. Broadway, Suite 1830 St. Louis, Missouri 65251 Gerald Charnoff, Esq.
Thomas A. Baxter, Esq.
Ms. Marjorie Reilly Shaw, Pittman, Potts & Trowbridge Energy Chairman of the League of 2300 N Street, N. W.
Women Voters of Univ. City, M0 Washington, D. C.
20037 7065 Pershing Avenue University City, Missouri 63130 Mr. J. E. Birk Assistant to the General Counsel Mr. Donald Bollinger, Member Union Electric Company Missourians for Safe Energy Post Office Box 149 6267 Delmar Boulevard St. Louis, Missouri 63166 University City, Missouri 63130 U. S. Nuclear Regulatory Commission Mr. Dan I. Bolef, President m N Resident Inspectors Office Kay Drey, Representative RR#1 Board of Directors Coalition Steedman, Missouri 65077 for the Environment St. Louis Region Mr. Donald W. Capone, Manager 6267 Delmar Boulevard Nuclear Engineering University City, Missouri 63130 Union Electric Company Post Office Box 149 St. Louis, Missouri 63166 Chris R. Rogers, P.E.
Manager - Electric Department 301 W. High Post Office Box 360 Jefferson City, Missouri 65102 i
Regional Administrator U. S. NRC, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. Ronald A. Kucera, Deputy Director Department of Natural Resources P. O. Box 176 Jefferson City, Missouri 65102 i
Mr. Glenn L. Koester Vice President - Nuclear Kansas Gas and Electric Company j
201 North Market Street l
Post Office Box 208 l
Wichita, Kansas 67201
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