ML20039A290
| ML20039A290 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 12/10/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| References | |
| TASK-15-07, TASK-15-7, TASK-RR LSO5-81-12-032, LSO5-81-12-32, NUDOCS 8112160463 | |
| Download: ML20039A290 (3) | |
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p December 10,-1981 Docket No. 50-213 LS05-81 12-032 g,
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Mr. W. G. Counsil, Vice President
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Nuclear Engineering and Operations
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Post Offit.a Box 270
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Hartford, Connecticut 06101 Q
Dear Mr. Counsil:
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SUBJECT:
HADDAM NECK - SEP TOPIC XV-7 REQUEST FOR ADDITIONAL INFORMATION We have reviewed the topic assessment on the above topic that you submitted on September 30, 1981, and we find that additional infor-mation is needed to complete our safety evaluation.
Please provide the requested infomation within 30 days of receipt of this letter.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance t
is not. required under P.L.96-511.
SFpl Sincerely, y
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Dennis M. Crutchfield, Chief Operating Reactors Branch No. 5 g,*
Division of Licensing S. EilonH Enclosum:
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es Mr. W. G. Counsil
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cc Day, Berry & Howard Counselors at Law One Constitution Plaza Hartford, Connecticut 06103 Superintendent Haddam Neck Plant RFD #1 Post Office Box 127E East Hampton, Connecticut 06424 Mr. Richard R. Laudenat Manager, Generation Facilities Licensing 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: Assistant Director Research and Policy Development Department of Planning an'd Energy Policy 20 Grand Street
, Hartford, Connect cut 06106 i
U. S. Environmental Protection Agency Region I Office ATTN: Regional Radiation Representative JFK Federal Building Boston,' Massachusetts 02203 Resident Inspector Haddam Neck Nuclear Power Station c/o U. S. NRC East Haddam Post Office East Haddam, Connecticut 06423 i
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o-SYSTEMATIC EVALUATION PROGRAM TOPIC -XV-7 HADDAM NECK REQUEST FOR ADDITIONAL INFORMATION TOPIC:
XV-7, REACTOR COOLANT PUMP ROTOR SEIZURE AND REACTOR COOLANT PUMP SHAFT BREAK 1.
Provide transient curve of primary system pressure for the limiting loss of forced coolant flow event.
Also provide an analysis of the limiting loss of forced coolant flow with a single failure event.
Confirm that the results of these analyses meet the acceptance criteria for these events per SRP 15.3.1.
2.
The licensee is :aquested to provide a qualitative analysis to compare the RCP rotor seizure accident with the RCP shaft break accident to identify the limiting case with respect to maximum RCS pressure and limiting fuel performance.
Provide tabulations of the sequence of events, disposition of normally operating systems, utilization of safety systems and transient curves including RCS pressure and DNBR and reactor coolant flow for the limiting accident.
The analysis should assume a loss of offsite' power as a result of turbine trip, the Technical Specification limit of steam generator tube leakage and a single active failure in safety systems. Appro-priate delay time for loss of offsite power may be assumed if suitably justified.
Confirm that the results of the analysis meet the acceptance criteria for these events per SRP 15.3.3.
Assume any fuel rod which has a DNBR less than the minimum DNBR value determined for Haddam Neck fails.
State the amou.nt of failed fuel in the results of the analysis.
Radiological consequences should be calculated accordingly.
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