ML20211A172

Forwards Safety Evaluation Supporting Util 860123 & 0220 Responses to 10CFR50.61 Re Pressurized Thermal Shock (PTS) Rule.Reevaluation of Rt(Pts) & Comparison W/Predicted Values in Future pressure-temp Submittals Requested

ML20211A172
Person / Time
Site:	Waterford
Issue date:	05/29/1986
From:	Joshua Wilson Office of Nuclear Reactor Regulation
To:	Muench G LOUISIANA POWER & LIGHT CO.
Shared Package
ML20211A175	List: ML20211A172 ML20211A231
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8606110073
Download: ML20211A172 (2)

Text

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. MAY 2 91986

. Docket No. 50-382 DISTRIBUTION H0rnstein DCrutchfield (Docket Jile 2,jBGrimes Mr. G. W. Muench NRC PDR JPartlow Acting Director - huclear Operations L PDR ILee Louisiana Power and Light Company PBD#6 Rdg Gray File 317 Baronne St., Mail Unit 17 FMiraglia PBD#7 Rdg New Orleans, Louisiana 70160 0 ELD JWilson ACRS-10 GVissing

Dear Mr. Muench:

EJordan EBrach

Subject:

Projected Values of Material Properties For Fracture Toughness Requirements For Protection Against Pressurized Thermal Shock Events We have reviewed your letters dated January 23, 1986 and February 20, 1986 which were submitted in response to the Pressurized Thermal Shock (PTS) Rule, 10 CFR 50.61, for Waterford Steam Electric Station, Unit 3. 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 plantandthecalculatedRT[tk acceptable. The calculated p for isthe end the below of life of the plant screening criteriatoofbe 270 F at 33.6EFPYwhichisbeyondtheSIhirationdateofthelicenseand,therefore, meets the requirements of the PTS Rule.

The PTS Rule requires 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 re-evaluation of the RT and comparison with the predictedvalueinanyfuturePressure-Temperatur$Tkubmittalswhicharesubmitted as required by 10 CFR 50, Appendix G.

Our associated Safety Evaluation is enclosed.

Sincerely, M

James H. Wilson, Project Manager PWR Project Directorate No. 7 Division of PWR Licensing-B

Enclosure:

As stated cc w/ enclosure See next page PBD# -

P P A JWils hton DC tchfield 5/27 86 5/ /86 5 /86 0606110073 860529 2 DR ADOCK 0500 w-- -e -y e m, - mo , --

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Mr. G. W. Muench Louisiana Power & Light Company Waterford 3 cc:

W. Malcolm Stevenson, Esq. Regional Administrator, Region IV Monroe & Leman U.S. Nuclear Regulatory Commission 1432 Whitney' Building Office of Executive Director New Orleans, Louisiana 70103 for Operations 611 Ryan Plaza Drive, Suite 1000 Mr. E. Blake Arlington, Texas 76011 Shaw, Pittman, Potts and Trowbridge 1800 M Street, NW Carole H. Burstein, Esq.

Washington, D.C. 20036 445 Ualnut Street New Orleans, Louisiana 70118 Mr. Gary L. Groesch P. O. Box 791169 Mr. Charles B. Brinkman, Manager New Orleans, Louisiana 70179-1169 Washington Nuclear Operations Combustion Engineering, Inc.

Mr. F. J. Drummond 7910 Woodmont Avenue, Suite 1310 Project Manager - Nuclear -

Bethesda, Maryland 20814 Louisiana Power and Light Company 142 Delaronde Street New Orleans, Louisiana 70174 Mr. K. W. Cook Nuclear Support and Licensing Manager Louisiana Power and Light Company 142 Delaronde Street New Orleans, Louisiana 70174 Resident Inspector /Waterford NPS &

P. O. Box 822 Killona, Louisiana 70066 Mr. Jack Fager Middle South Services, Inc.

P. O. Box 61000 New Orleans, Louisiana 70161 l Chairman Louisiana Public Service Commission One American Place, Suite 1630 Baton Rouge, Louisiana 70804

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