ML20148H973

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Responds to Submitting Proposed Change 111 Providing Diverse Method of ECCS Initiation by Adding Vapor Container Overpressure Signals to Activating Circuit. Addl Info Requested to Complete Evaluation
ML20148H973
Person / Time
Site: Yankee Rowe
Issue date: 12/13/1973
From: Schemel R
US ATOMIC ENERGY COMMISSION (AEC)
To: Vandenburgh D
YANKEE ATOMIC ELECTRIC CO.
References
NUDOCS 8011200221
Download: ML20148H973 (1)


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Docket File RP Reading File Y

Docket No. 50-29 Branch Reading File AEC.PDR JRBuchanan DJSkovholt Yankee Atomic Electric Company ACRS (16) i ATIN* Mr. Donald 3. Vandenburgh RO (3)

Vice President Attorney, OGC 20 Turnpike Boed

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Westboro, Massachesetts 01581 2Cartee i

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l By letter dated September 14, 1973, you submitted proposed Change No. 111 that would provide a diverse method of emergency core cooling system initiation by adding vapor coarminar overpressure signals to the activating circuit. We find that we require the following additional information to complete our eval =*%

the equipannt specificacians for the two pressure switches

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a, to be used.

(ranga, accuracy, repamenhility, etc.).

the setpoint for the pressure switches,

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j the capability for testing under various modes of reactor c.

operacloa, and i

a discussion of the reliability of operation - previous d.

applications of chama switeham and their performance in sech applications.

Please sebsit the re(mosted information by February 1,1974, in three signed originals and thirty-seven additional copias.

B1=earaly Original Signed by.

Robert J. Schemel THIS DOCUMENT CONTMNS nebert J. Schemal, Chief POOR QUAUTY PAGES Operating Basetors Branch #1

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