ML14133A353

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Discusses Commitment to Develop Program Re Potential Reactor Vessel Integrity Concerns Identified in NRC . Program Will Identify Whether Future Addl Plant Specific Analyses &/Or Remedial Actions Will Be Required
ML14133A353
Person / Time
Site: San Onofre 
Issue date: 05/22/1981
From: Baskin K
Southern California Edison Co
To: Eisenhut D
Office of Nuclear Reactor Regulation
References
TAC-47549 NUDOCS 8106010302
Download: ML14133A353 (1)


Text

Southern California Edison Company P. 0. BOX 800 2244 WALNUTGROVEAVENUE ROSEMEAD. CALIFORNIA 91770 K. P. BASKIN TELEPHONE MANAGER OF NUCLEAR ENGINEERING, May 22, 1981 (213) 572-1401 SAFETY, AND LICENSING Director of Nuclear Reactor Regulation us, am 9

Attention:

Darrell G. Eisenhut, Director Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C.

20555 Gentlemen:

Subject:

Docket No. 50-206 Thermal Shock to Reactor Pressure Vessels San Onofre Nuclear Generating Station Unit 1 The Westinghouse Owners Group, of which Southern California Edison is a member, has committed to a program to address potential reactor vessel integrity concerns as identified in your letter dated April 20, 1981 (Generic letter 81-19). That commit'rrent and the description of the program, are contained in a letter to you dated May 14, 1981 from Robert W. Jurgensen, Chairman, Westinghouse Owners Group. Specifically, the Westinghouse Owners Group program to be completed in December, 1981 will identify, for all operat ing plants as identified in the May 14, 1981 report, if future additional plant specific analyses and/or remedial actions may be required and will provide the time in plant life when these additional actions may be needed.

Based on the results of the program which will be provided to the NRC at the end of 1981, Southern California Edison will provide additional detail including a schedule for reanalyses and/or remedial action if required, and the basis for same.

As described in the May 14, 1981 letter, all Westinghouse plants including San Onofre Unit 1 have been shown to safely sustain severe thermal shock transients, including repressurization, to beyond January, 1983 at a minimum based on the plant specific and generic analyses identified previously.

If you have any questions regarding this matter, please let me know.

Very truly yours, 910600 1" fie