ML13317A836

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Forwards Util 150-day Response to 810821 Request for Addl Info Re Pressurizer Thermal shock.Plant-specific Analyses Indicate That Vessel Integrity Will Be Maintained,Therefore Remedial Actions Not Warranted
ML13317A836
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 01/25/1982
From: Baskin K
Southern California Edison Co
To: Eisenhut D
Office of Nuclear Reactor Regulation
References
TAC-47549, TAC-59980 NUDOCS 8201290469
Download: ML13317A836 (2)


Text

Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 K. P. BASKIN TELEPHONE MANAGER OF NUCLEAR ENGINEERING, (213) 572-1401 SAFETY, AND LICENSING January 25, 1982 Director, Office of Nuclear Reactor Regulation JAN2819821 10 Attention:

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

20555 Gentlemen:

Subject:

Docket No. 50-206 Pressurized Thermal Shock to Reactor Pressure Vessels San Onofre Nuclear Generating Station Unit 1 Your letter of August 21, 1981 required that we provide you with additional information regarding the San Onofre Unit 1 reactor vessel. A portion of that information was provided to you by our letter dated November 4, 1981.

The remaining information is provided as an enclosure to this letter. In addition, by letter dated December 18, 1981, the NRC requested additional information and amplified requests in the August 21, 1981 letter. Responses to that information have also been included in the enclosure.

The enclosure provides the results of plant specific analyses that demonstrate the reactor vessel integrity will be maintained for the San Onofre Unit 1 vessel beyond its design lifetime. The analyses indicate that a vessel integrity safety concern does not exist through the endof plant life.

Consequently, a plan defining remedial actions and schedules for resolution of this issue, as requested by your August 21, 1981 letter, is not warranted.

However, as indicated in the enclosure, we will institute formal training on this issue as part of the operator requalification training program beginning in February, 1982.

8201290469 820125 PDR ADOCK 05000206 P

PDR

Mr. D.

January 25, 1982 If you have any questions regarding this matter, please let me know.

Subscribed on this day of

, 1982.

?ery tru1yours, By K. P. Baskin Manager of Nuclear Engineering,.

Safety, and Licensing Subscribed and swor to before me this 1 day of

, 1982 Nota Public in and for the County of L s Angeles, State of California En c l o s u re

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OFFICIAL SEAL AGNES CRABTREE NOTARY PUBLIC - CALIFORNIA PRINCIPAL OFFICE IN LOS ANGELES COUNTY My Commission Exp. Aug.27,1982 W di3 cw it 92 9 a oIwIIn