ML20148H973

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)

Text

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,s., i DG 131973 DIsTRIsuTION : .

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 .RJSchemel Westboro, Massachesetts 01581 j

2Cartee i ABurger j!

Geertamen _

'SATeets  ;

9

'TVWAmbach. 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 =*%

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a,

1. the equipannt specificacians for the two pressure switches to be used. (ranga, accuracy, repamenhility, etc.).

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b. i the setpoint for the pressure switches, j

c. the capability for testing under various modes of reactor operacloa , and i

d. a discussion of the reliability of operation - previous  !

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 '

. ... _ .3 Directorate of Licensing

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