ML20206F865

Forwards Exemption from Subsection Iii.L of 10CFR50,App R Re Capability to Achieve Cold Shutdown in 72 H & Safety Evaluation Supporting Util Request for Exemption from Subsection of 10CFR50,App R

ML20206F865
Person / Time
Site:	Rancho Seco
Issue date:	05/19/1986
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Reinaldo Rodriguez SACRAMENTO MUNICIPAL UTILITY DISTRICT
Shared Package
ML20206F869	List: ML20206F865 ML20206F880 ML20206F907
References
TAC-43320, TAC-52291, TAC-53444, TAC-58032, NUDOCS 8606250010
Download: ML20206F865 (3)

Text

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bbb May 19,1986 Docket No. 50-312 DISTRTRUTTON SMiner L PDR RWeller Mr. Ronald J. Rodriguez PBD-6 Rdg ACRS-10 Assistant General Manager, Nuclear FMiraglia Gray File Sacramento Municipal Utility District 0 ELD EBrach 6201 S Street EJordan H0rnstein P. O. Box 15830 BGrimes Sacramento, California 95813 JPartlow

Dear Mr. Rodriguez:

By letter dated February 28, 1985, as supplementad November 7, 1985, you requested an exemption from Subsection III.L of Appendix R to 10 CFR 50 to the extent that it requires the capability to achieve cold shutdown in 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. We have completed our review of your request and have granted the requested exemption as discussed in the enclosed Exemption (Enclosure 1). A copy of the Exemption is being filed with the Office of the Federal Register for publication.

In our January 10, 1983, letter, we denied your requested exemption from the requirements of 10 CFR 50, Appendix R, Section III.G.2, for safe shutdown capability as applied to the control and computer room. Subsequently, by letters dated November 30, 1983, April 5, 1985, July 12, 1985, September 27, 1985, and October 30, 1985, you submitted the design of a proposed alternate shutdown capability for the control and computer room, control and computer corridor and the auxiliary building roof (where essential control room heating, ventilating and air canditioning equipment is located). Based on the information you submitted and allowing for the 72-hour cold shutdown exemption as stated above, the alternate shutdown capability for the computer i

and control room, computer and control room corridor, and the auxiliary building roof area is in accordance with the " iteria of Appendix R, Subsections III.G.3 and III.L, and is, theref e, acceptable. Our Safety Evaluation (SE) is enclosed (Enclosure 2) fr your information.

Sincerely, aca10.uL sIcum 3r JCCi F. Sl%P >

John F. Stolz, Director PWR Project Directorate #6 Division of PWR Licensing-B

Enclosures:

As Stated cc w/ enclosures:

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DISTRIBUTION:

June 5,1986 Docket File PBD#6 Rdg May 24--1986-RIngram DOCKET NO.

Rules and Procedures Branch MEMORANDUM FOR:

Division of Rules and Records Office of Administration FROM:

Office of Nuclear Reactor Regulation

SUBJECT:

RANCHO SECO NUCLEAR GENERATING STATION One signed original of the Federal Register Notice identified below is enclosed for your transmittal to the Office of the Federal Register for publication. Additional conformed copies (

5

) of the Notice are enclosed for your use.

Notice of Receipt of Application for Construction Permit (s) and Operating License (s).

Notice of Receipt of Partial Application for Construction Permit (s)and Facility

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License (s). Time for Submission of Views on Antitrust Matters.

Notice of Consideration of Issuance of Amendment to Facility Operating License.

Notice of Receipt of Application for Facility License (s); Notice of Availability of Applicant's Environmental Report; and Notice of Consideration of Issuance of Facility License (s) and Notice of Opportunity for Hearing.

Notice of Availability of NRC Draf t/ Final Environmental Statement.

Notice of Limited Work Authorization.

Notice of Availability of Safety Evaluation Report.

Notice of Issuance of Construction Permit (s).

Notice of Issuance of Facility Operating License (s) or Amendment (s).

Order.

h Exems. tion.

Notice of Granting Exemption.

Environmental Assessment.

Notice of Preparation of Environmental Assessment.

Other:

Office of Nuclear Reactor Regulation PWR Project Directorate !S, PWR-0

Enclosure:

As stated

Contact:

Phone:

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1. Rodriguez Rancho Seco Nuclear Generating Sacranento Municipal Utility District Station 1

cc:

Mr. David S. Kaplan, Secretary Sacramento County and General Counsel Board of Supervisors Sacramento Municipal Utility 827 7th Street, Room 424 District Sacramento, California 95814 6201 S Street P. O. Box 15830 Ms. Helen Hubbard Sacramento, California 95813 P. O. Box 63 Sunol, California 94586 Thomas Baxter, Esq.

Shaw, Pittman, Potts & Trowbridge 1800 M Street, N.W.

Washington, D.C.

20036 Mr. Robert B. Borsum Dabcock & 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 neraia, California 95638 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 01 rector Energy Facilities Siting Division Energy Resources Conservation &

Development Commission 1516 - 9th Street Sacramento, California 95814 1ernrh 0. Ward, Chief Radiological Health Branch Ltatt Department of Health Services 714 P Street, Office Building #8 Sacramento, California 95814 i

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