ML19319D820

Confirms Agreements Reached in 730731 Meeting W/Util in Bethesda,Md Re FSAR & Control Scheme for Emergency Diesel Engines

ML19319D820
Person / Time
Site:	Rancho Seco
Issue date:	08/02/1973
From:	Davis E SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8003250811
Download: ML19319D820 (3)

Text

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AEC DT RIBUTION FOR PART 50 DOCKET up.IAL (TEMPORARY FORM)

CONTROL 110:

6013 FILE:

FROM:

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E. K. Davi, 4-2-71 9-6-73 X

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50-312 DESCRIPTION:

ENCLOSURES:

Ltr re 7-31-7 3 nee ting.... submittino changes to F?AR & the control schamp For *TargenCV

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CKNOWLEDGED m - 1 ensna.......

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SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street Box 158%, Sacramento, California 95813; (916) 452 3211 August 2, 1973 Mr. Angelo Giambusso Deputy Director for Reactor Projects

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Directorate of Licensing U. S. Atomic Energy Commission a

Washington, D. C. 20545 AEC Docket No. 50-312 Z

Rancho Seco Nuclear Generating Station, Unit No. 1

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Dear Mr. Giambusso:

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This letter is to confirm the agreements reached at a meeting on July 31, 1973 in Bethesda, Maryland between the Atomic Energy Commission and the Sacramento Municipal Utility District.

The following are the changes to the Final Safety Analysis Report and the control scheme for the emergency diesel engines which were agreed to at the meeting:

1.

Jinal Safetz y lysis Recort:

A.

Pace..o.

.2-8a:

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The wording relative to the emergency diesel engine and

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generator breaker trips, and the engine starting interlocks

- 'I will be revised to clarify the actual operation of the control and protective schemes.

B.

Page No. 8.2-8b:

The wording relative to the source of AC power for the emergency diesel generator auxiliaries will be revised to clearly indicate that AC power is not needed to start the emergency diesel engines.

2.

Control Scheme for the Emergency Diesel Engines:

The emergency diesel engine control schemes will be revised to give the following actions:

1 A.

The engine shutdown relays will be automatically reset on a safety features actuation.

l B.

The engine emergency manual shutdown switch contacts will be blocked on a safety features actuation to prevent the operation of these switches from overriding the SFAS signal and stopping the diesel engines.

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• i AN ELECTRIC SYSTEV SERVING MORE THAN 600.000 !N THE HEART 0e OA!'FJ2),a

w' j Hr.,Ang31o Giambus:0 August 2, 1973 i

The changes listed in Item No. I will be included in the

,next amendment to the Final Safety Analysis Report and the drawings showing the revisions stated in Item No. 2 will be forwarded to the AEC during the week of August 6,1973.

Sincerely yours,

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' E. K. Davis General Manager 4

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