ML20205C200

Provides Info Re Implementation Schedules for Compliance W/Requirements of ATWS Rule (10CFR50.62).Deadline for Implementation Extended to No Later than Third Refueling Outage After 870724.Response Requested within 30 Days

ML20205C200
Person / Time
Site:	Rancho Seco
Issue date:	03/11/1987
From:	Miner S Office of Nuclear Reactor Regulation
To:	Julie Ward SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
GL-85-06, GL-85-6, NUDOCS 8703300133
Download: ML20205C200 (3)

Text

March 11, 1987 q

Docket No.: 50-312 </

Mr. John E. Ward Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station P.O. Box 15830, Mail Stop No. 291 Sacramento, California 9585?-1830

SUBJECT:

RANCHO SEC0 NUCLEAR GENERATING STATION SCHEDULE FOR IMPLEMENTATION OF THE ATWS RULE The purpose of this letter is to provide you information concerning implementation schedules for compliance with the requirements of the ATWS rule (10 CFR 50.62).

The specific requirements are listed in paragraphs (c)(1) through (c)(5) of the rule. Paragraph (d) of the rule addresses implementation schedules.

The ATWS rule was published in the Federal Recister on June 26, 1984 Quality Assurance (0A) guidance for non-safety related ATWS equipment was issued by Generic Letter (GL) 85-06 dated April 16, 1985. Therefore, plant specific schedules for meeting the requirements of the ATWS rule were required to be submitted to NRR by October 15, 1985 (180 days after issuance of the OA guidance).

Many utilities responded by stating that final schedules for meeting the requirements of the rule could not be determined until the staff completed its reviews of generic ATWS designs. The generic reviews have either only recently been completed or are still or. going. Delays incurred in preparation of the OA guidance, and the extensive time and effort required to resolve complex issues associated with the development of review criteria, interpretation of supplementary information published with the rule, and the review of generic ATWS designs have all impacted utility schedules. Because of the cumulative effect of these delays, and in recognition that a sound and thorough engineering approach to resolve ATWS concerns is preferred to a rushed effort forced by schedular constraints, the NRC has decided to extend the deadline for implementation of the ATWS rule. The revised schedule allows you to delay implementation of ATWS rule requirements to no later than the third refueling outace after July 24, 1984. A request for a delay beyond the third outage will be handled on a case-by-case basis if it is presented in a timely fashion, and can be adequately justified.

0703300133 070311 PDR ADOCK 05000312 P PDR

- -p.

Please contact me within 30 days of receipt of this letter regarding implementation schedules at Rancho Seco Nucleer Generating Station, Unit I using the guidance provided above.

Sincerely,

/S/

Sydney Miner. Project Manager PWR Project Directorate No. 6 Division of PWR Licensing-B cc: See next page Distribution:

Docket Files NRC & LPDPs PDf6 Files F. Miraglia 0GC EJordan BGrimes RWeller GKalman SMiner Ringram JPartlow ACRS DCrutchfield JMauck RKendall JCalvo PD PD#6 0 GKalman SMi RWeller  %'tr~~.

JSe

]///87 3/ 7 /87 S/7/87 g/ly87

c M'

Rancho Seco Nuclear Generating Mr. John C. Ward Sacramento Municipal Utility District Station CC*

Mr. David S. Kaplan, Secretary Sacramento County Board of Supervisors and General Counsel 827 7th Street, Room 424 Sacramento Municipal Utility

• Sacramento, California 95814 District 5201 S Street P. O. Box 15830 Ms. Helen Hubbard Sacramento, California 95813 P. O. Box 63 Sunol, California 94586 Thomas A. Baxter, Eso.

Shaw, Pittman, Potts & Trowbridge --

2300 N Street, N.W.

Washington, D.C. 20037 .

Mr. Ron Columbo Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station 4440 Twin Cities Road Herald, California 95638-9799 .

Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 ,

Resident inspector / Rancho Seco c/o U. S. N. R. C.

14410 Twin Cities Road Perald, California 95638 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Director Energy Facilities Siting Division Energy Resources Conservation &

Development Commission 1516 - 9th Street Sacramento, California 95814' ,

Mr. Joseph 0. Ward, Chief ,

Radiological Health Branch -

State Department of Health Services 714 P Street Office Building #8 -

Sacramento, California 95814 ----

L