ML20235F525

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Forwards Supplemental Info Re Previous Submittal of Proposed Amend 147,Rev 2 Re Electrical Sys Tech Specs.Info Reflects More Restrictive Limiting Condition of Operation for Diesel Generators to Be out-of-svc
ML20235F525
Person / Time
Site: Rancho Seco
Issue date: 09/22/1987
From: Andognini G
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Miraglia F
Office of Nuclear Reactor Regulation
Shared Package
ML20235F529 List:
References
GCA-87-611, TAC-63030, NUDOCS 8709290183
Download: ML20235F525 (2)


Text

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j SACRAMENTO MUNICIPAL UTILITY DISTRICT O P. O. Box -15830, Sacramento CA 95852-1830,(916) 452-3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA SEP 2 21987 GCA 87-611-U. S. Nuclear Regulatory Commission Attn: Frank J. Miraglia, Jr.

Associate Director for Projects Philips Bldg.

7920 Norfolk Avenue Bethesda, MD 20014

. DOCKET 50-312 RANCHO SECO NUCLEAR GENERATING STATION UNIT #1 PROPOSED AMENDMENT 147, REVISION 2, SUPPLEMENT 1, " ELECTRICAL SYSTEM TECHNICAL

. SPECIFICATIONS"

Dear Mr. Miraglia:

This letter provides supplemental information concerning our previous submittal of Proposed Amendment 147 which accounts' for our new electrical system configuration.-

This improvement to Proposed Amendment 147 reflects:

a more restrictive Limiting Condition of Operation (LCO) for Diesel Generators to be out-of-service.

(See Attachment 1) a clarification that only multiple nuclear service bus inoperabilities in more than one train cause a one-hour LC0 for reactor shutdown.

(See I )

. fire protection features in full conformance with relevant National Fire Protection Code Standards.

(See Attachment 3) j 1

a revision to the 4160V under-voltage relay surveillance.

(See i

- )

)

a revised reference to diesel generator fuel oil sampling standards.

(See

- )

I l

l' several specifications restructured to conform with Proposed Amendment 1 64.

(Incorporated in all of the attachments)

The attachments provide a detailed discussion for each of the above changes.

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RANCHO SECO NUCLEAR GENERATING STATION O 1444o Twin Cities Road, Herald, CA 95638 9799;(209) 333-2935

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GCA 87-611 Fra'nk J. Miraglia, Jr.

- 2. -

' The safety analysis and no significant hazards consideration in the District's April 1,.1987 submittal of Proposed Amendment 147, Revision.2, are not changed

- or affected by this. supplement because the new electrical system configuration is. unchanged by this supplement.

Also attached. is a complete copy of.the Proposed Amendment 147 Technical

- Specification changes which includes the supplement.1 changes.

If you have any questions on the enclosed, please contact Steven Farkas of my' staff at (916) 452-3211 x3906.

~ Sincerely,

(. Carl Andognini Chief Executive Officer,

-Nuclear Sworn to and subscribed before me this JM day of.5%6er, 1987

./

Aabd b hw C./ N R ary Public z~

ohic?A b@~wdNMQd'l JUDY E. LUNA "EcIEEEs$$3"*^

Attachments (1-6) i cc:

J. B. Martin (2) w/atch G. Kalman, NRC, Bethesda w/atch A. D' Angelo, NRC, Rancho Seco w/atch MIPC (2)' w/atch.

INP0 w/atch

. _.