ML19340E329
| ML19340E329 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 12/15/1980 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| References | |
| TASK-04-02, TASK-4-2, TASK-RR LSO5-80-12-019, LSO5-80-12-19, NUDOCS 8101140050 | |
| Download: ML19340E329 (4) | |
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' Docket No. 50-213 L505-80-12-019 Mr. W. G. Counsil, Vice President Nuclear Engineering and Operations Connecticut Yankee Atomic Power Co.
Post Office Box 270 Hartford, Connecticut 06101
Dear Mr. Counsil:
RE:
HADDAM NECK - SEP TOPIC IV-2, REACTIVITY CONTROL SYSTEMS DESIGN AND PROTECTION AGAINST SINGLE FAILURES The enclosed request for information has been prepared by the staff as a part of our review of SEP Topic IV-2.
Please provide the requested information within 90 days of receipt of this letter.
Sincerely, 9!: 4 h.
Dennis M. Crutchfield, ief l
Operating Reactors Branch #5 Division of Licensing l
Enclosure:
Request for Information on SEP Topic IV-2 1
cc w/ enclosure:
See next page E
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Mr. W. G. Counsil HADDAM NECK Pt.tF.T DOCKET NO. 50-213 CC Day, Berry & Howard U. S. Environmental Protection Counselors at Law Agency One Constitution Plaza Region I Office Hartford, Connecticut 06103 ATTN: EIS C0ORDINATOR JFK Federal Building Superintendent Boston, Massachusetts 02203 Haddam Neck Plant RFD #1 Resident Inspector Post Office Box 127E Hadda= Neck Nuclear Power Station East Hampton, Connecticut 06424 c/o U. S. NRC East Haddam Post Office Mr. Jaaes R. Himmelwright East Haddam, Connecticut 06423 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 &nd Energy Policy l
20 Grand Street l
Hartford, Connecticut 06106 Director, Technical Assessment Division Office of Radiation Prograns (AW-459)
U. S. Environmental Protection Agency Crystal Mall #2 i
Arlington, Virginia 20460 i
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ENCLOSURE REQUEST FOR INFORMATION SEP TOPIC IV-2 General Design Criterion 25 requires that the reactor protection system be designed to assure that specified acceptable fuel damage limits are not exceeded in the event of any single failure of the reactivity control systems, such as accidential rod withdrawals.
1.
Describe the single failures within systems used for reactivity control which can:
a) Cause an inadvertent reactivity insertion.
b) Cause a single or combination of rods to be positioned in other than the design sequence.
For PWRs this should include consideration of single rod withdrawal / insertions which can result from a single equipment component failure.
2.
Delineate those design features which limit reactivity insertion rates and rod malpositions resulting from a single failure.
Provide the appropriate circuit schematics showing these design features.
3.
Provide or reference appropriate analyses to demonstrate that specified j
acceptable fuel damage limits are not exceeded in the event of any of the single failures identified in Item 1 above.
l 4.
Identify the operating procedures, alarms, interlocks, or protection I
system actions which must be used in limiting the consequences following a single failure within systems used for reactivity control. Where equipment actions are required, indicate whether the equipment meets the' criteria of IEEE-279.
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