ML20211P183

Forwards Safety Evaluation Re 860123 Response to PTS Rule. Matl Properties of Reactor Vessel Beltline Matls,Projected Fluence at Inner Surface of Reactor Vessel & Calculated Rt (PTS) for End of Life of Plant Acceptable

ML20211P183
Person / Time
Site:	Wolf Creek
Issue date:	12/15/1986
From:	Oconnor P Office of Nuclear Reactor Regulation
To:	Koester G KANSAS GAS & ELECTRIC CO.
Shared Package
ML20211P188	List: ML20211P183 ML20211P199
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8612190001
Download: ML20211P183 (2)

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' Docket No.: 50-482 15 DEC 1986 Mr. Glen L. Koester Vice President - Nuclear Kansas Gas and Electric Company 201 North Market Street Wichita, Kansas 67201

Subject:

Projected Values of Material Properties for Fracture Toughness Requirements for Protection Against Pressurized Thermal Shock Events We have reviewed your letter dated January 23, 1986 which was submitted in re-sponse to the Pressurized Thermal Shock (PTS) Rule,10 CFR 50.61, for the Wolf Creek Generating Station. We have found the material properties of reactor vessel beltline materials, the projected fluence at the inner surface of the reactor vessel- for the end of life of the plant, and the calculated for the end of life of the plant to be acceptable. The calculated RT RT@lowthescreeningcriteriaof270 is Fat 31.74EFPYwhichisbeyondthe PTS expiration 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-dated whenever changes in core loadings, surveillance measurebts 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' re-evaluation of the RT and comparison withthepredictedvalueinanyfuturePressure-Temperature p[hbmittalswhich are submitted as required by 10 CFR 50, Appendix G.

Our associated Safety Evaluation is enclosed.

.,3 Sincerely, e6121g PDR g $ b200ke2 d PDR 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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' Wolf Creek Generating Stetier l l'r. Glenn L. Koester Unit No. 1 Kansas Gas and Electric Company cc: Mr. Gary L. Haden, Director Mr. Nicholas A. Petrick Research & Energy Analysis Executive Director, SNUPPS Kar,sas Corporation Comission 5 Choke Cherry Road 4th Floor - State Office Beildir.g Rockville, Maryland 20650 Topeka, Kansas 66612-1571 Jay Silberg, Esq. Regicral Administrator, Region IV Shaw, Pittnan, Potts & Trowbridge U.S. Nuclear Regulatory Comissicn 2300 N Street, fS!

Washington, D.C. 20037 Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 J.M. Evans Arlington, Texas 76011 Vice President - System Power Operation Kansas City Power & Light Company f:r. Allan Mee

- 1330 Baltimore Avenue Project Coordinator Kansas City, Missouri 64141 Kansas Electric Power Cooperative,Inc.

Chris R. Rogers, P.E. P. O. Ecx 4877 Gage Center Station Manager, Electric Department Topeka, Kansas 66604 Public Service Concission P. O. Box 360 Resident Inspector / Wolf Creek NPS Jefferson City, Missouri 65102 c/o U.S. Nuclear Regulatory Comission Regional Adr.inistrator, Region III P. O. Cox 311 Burlington, Kansas 60239 U.S. Nuclear Regulatory Comission 799 Roosevelt Road Mr. Brian tioline Glen Ellyn, Illinois 60137 Chief Lepel (cunsel Kansas Corporation Comission Senior Resident Inspector / Wolf Creek 4th Floor - State Office Puflding c/o U. S. Nuclear Pegulatory Comission Topeka, Kansas 66612-1571 P. O. Box 311 Burlington, Kansas 66639 Mr. Otto Maynard, Managcr Licersfrg Vr. Robert Elliot, Chief Engineer Kansas Cas and Electric Company Utilities Division PO Box 309 Mansas Corperation Comission Burlington, Kansas 66839 4th Floor - State Office Duilding Topeka, ransas 66612-1571 fir. Gerald Allen Public Health Physicist Bureau of Air Cuclity & Radiation Control Division o' frviroment Kansas Departrent of Health ana Environment Forbes Field Cuilding 321 Topeka , Kansas 66620

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