ML20008F029
| ML20008F029 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 02/27/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| References | |
| TASK-06-07.B, TASK-6-7.B, TASK-RR LSO5-81-02-054, LSO5-81-2-54, NUDOCS 8103120073 | |
| Download: ML20008F029 (3) | |
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,v Docket No. 50-213
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Post Office Box 270 3
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Hartford, Connecticut 06101 4/
Dear Mr. Counsil:
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SUBJECT:
SEP TOPIC VI-7.B., ESF SWITCHOVER (HADDAM NECK)
REQUEST FOR ADDITIONAL INFORMATION The enclosed request for additional information has been v.4 pared is part of our evaluation of the ESF Switchover from Injection to Recirculaticri Modes at Haddam Neck.
Because this concern is a part of a SEP Topic, response within 30 days is requested so that we maintain the present SEP review schedule.
Sincerely, Dennis M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing l
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..,, g-Docket No. 50-213 L505-81-02-054 Mr. W. G. Counsil, Vice President Nuclear Engineering and Operations Connecticut Yankee Ator c Power Co.
Post Office Box 270 Hartford, Connecticut 06101
Dear Mr. Counsil:
SUBJECT:
SEP TOPIC VI-7.B., ESF SWITCHOVER (HADDAM NECK)
REQUEST FOR ADDITIONAL INFORMATION The enclosed request for additional information has been prepared as part of our evaluation of the ESF Switchover from Injection to Recirculation Modes at Haddam Neck.
Because this concern is a part of a SEP Topic, response within 30 days is re"uested so that we maintain the present SEP review schedule.
Sincerely, Dennis M. Crutchfield, Chief Operating Reacters Branch No. 5 Division of Licensing
Enclosure:
As stated l
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See next page r
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HADDAM NECK PLAN ~
Mr. W. G. Counsil DOCKET NO. 50-213 Cc Counselors at Law U. S. Environmental Prctection Day, Berry & Howa.'d Agency One Constitution Plaza Region 1 Office Hartford, Connecticut 06103 ATTN: EIS COORDINATOR JFK Federal Building Superintendent Boston, Massachusetts 02203 Haddam Neck Plant RFD #1 Resident Inspector Post Office Box 127E Haddam Neck Nu-lear Power Station East Hacpton, Connecticut 06424 c/o U. S. NRC East Haddam Post Office Mr. Jaces R. Himre1 wright East Haddam, Connecticut 06423 Nor.theast 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: Assistant Director Research and Policy Development Departcent of Planning and Energy Policy 20 Grand Street Hartford, Connecticut 06106 Director, Technical Assessment Division Office of Radiation Progracs (AW-459)
U. S. Envircnmental Protection
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Agency Crystal Mall #2 i
Arlington, Virginia 20460
REGUESV FOR ADDITIONAL INFORMATION ON SEP TOPIC VI-7.B By text, P&ID, and electrical schematics; describe the design provisions and procedures used in your plant to satisfy the requirements of Branch Technical Position ICSB-20. The information provided should include, but need not be limited to, the ic11owing:
(1) Describe the procedures used to su;tchover from the injection to the recirculation mode of emergency core cooling (ECC).
(2) For each instrument, indicator, logic device and alarm that is used by the operator to perform a manual function or that is used to initiate an automatic function in the switchover sequence; describe how that device is qualified and installed (e.g.
Independence and separation of circuits) as Class 1E equipment.
(3) Describe the level sensing system that is used to indicate or detect the level in the tank that supplies injection coolant. This description should include sensor and data column location, freeze protection, freeze protection power supply and those items specified in (2) above.
(4) IF injection pumps are not automatically tripped on low level, quantify the level at which the operator must racure tnese pumps and the time remaining beyond this level (assuming all pumps are running) at which loss of HPSH occurs.
(5) Describe the paths of the minimum flow lines from each ECCS pump discharge to the line end.
This description should identify al1 valves in these lines, the signals that control eac'h valve, the power sour ces for each valve, and the qualification of each valve.
(6) For each minimum flow line that returns to a point other than the pump intake point, provide i
l a single failure analysis and quantify the offsite dose rate, dose, and dose assumptions obtaining from all single failures that do not isolate these lines during the recirculation phase of ECC.
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