ML19323C565
| ML19323C565 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 04/23/1980 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| References | |
| TASK-15-10, TASK-RR NUDOCS 8005160336 | |
| Download: ML19323C565 (2) | |
Text
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April 23, 1980 Docket No. 50-213 i
Mr. W. G. Counsil. Vice President Nuclear Engineering and Operations Connecticut Yankee Atomic Power Company Post Office Box 270 Hartford, Connecticut 06101
Dear Mr. Counsil:
By letter dated September 26, 1977, we described a' limited boron dilution accident which had occurred at another operating PWR facility and we requested that Connecticut Yankee Atomic Power Company (CYAPCO) perform and submit an analysis of the potential for and consequences of this and other boron dilution incidents at the Haddam Neck Plant. You responded to this concern in a letter dated January 13, 1978, which stated you had re-evaluated all Boron Dilution Incidents which had been analyzed in the Facility Description and Safety Analysis for the Haddam Neck Plant. Your evaluation also concludad that there "is sufficient time available (10 to 15 minutes) for operators to recognize and to terminate the dilution flow before the reactor would go critical."
You are requested to confim that all possible dilution paths were considered in your evaluation and that your operators have at least 15 minutes to recognize and to terminate the dilution flow before the reactor would go critical.
If 15 minutes is not available for the necessary operator action, you should explain how alarms or other distinctive instrumentation would call the operator's attention to the dilution event in such a manner as to prevent an inadvertent criticality. Your response is requested by May 19, 1980.
Sincerely, kwws s
Dennis L. Ziema
, Chief Operating Reactors Branch #2 Division of Operating Reactors cc: See next pt'e I
i
Mr. W. G. Counsil April 23, 1980 cc Day, Berry & Howard U. S. Environmental Protection Counselors at Law Agency One constitution Plaza Region I Gffice Hartford, Connecticut 06103 ATTN:
EIS COORDINATOR JFK Federal Building Superintendent Boston, Messachusetts 02203 Haddam Neck Plant l
RFD #1 Post Office Box 127E East Hampton, Connecticut 06424 Mr. James R. Himmelwright Northeast Utilities Service Company P. O. Box 270 Hartford, Connecticut 06101 Russell Library 119 Broad Street Middletown, Connecticut 06457 Board of Selectmen Town Hall Haddam, Connecticut 06103 Connecticut Energy Agency ATTN: Assist. st Director Research and Policy Development Department of Planning and Energy Policy 20 Grand Street Hartford, Connecticut 06106, Director, Technical Assessment Division Office of Radiation Programs (AW-459)
U. S. Environmental Protection Agency Crystal Mall #2 Arlington, Virginia 20460
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