ML20050V184
| ML20050V184 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 02/11/1982 |
| From: | James Shea Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20050V262 | List: |
| References | |
| LSO5-82-02-057, LSO5-82-2-57, NUDOCS 8204150050 | |
| Download: ML20050V184 (3) | |
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E.' UNITED STATES P ?,
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NUCLEAR REGULATORY COMMISSION 5
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February ll, 1982 Docket No. 50-245 LS05-82-02-057 LICENSEE:
NORTHEAST NUCLEAR ENERGY COMPANY (NNECO)
FACILITY: MILLSTONE UNIT 1
SUBJECT:
CONTROL R0D DRIVE SCRAM DISCHARGE INSTRUMENT VOLUME LEVEL SWITCH DIVERSITY By letter dated December 9, 1981, NNECo documented its oppositiontto the NRC staff's requirement for diverse scram level-sensing instrumentation in the scram. discharge system. We requested a meeting with NNECo representatives to review the NNECo probabilistic safety evaluation and the cost benefits of alternate action. NNECo and NRC representatives (see Enclosure 1) met in the Bethesda,' Maryland NRC office on January 19, 1982. At that meeting, NNECo presented a probabilistic risk assessment and fault tree analysis using the visual aides (included here as
' ). The NRC evaluation of the need for level switch diversity including consideration of the additional information provided at the meeting (Enclosure 2) will continue.
NRC is scheduled to complete the safety evaluation report by mid-February 1982 with a conclusion on whether an exemption from the diverse level switch requirement is or is not l
justified.
p James J. She, Project Manager OE erating Reactors Branch #5 vision of Licensing
Enclosures:
As stated 820415o050 02o211 PDR ADOCK 05000 P
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CC William H. Cuddy, Esquire State of Connecticut Day, Berry & Howard Office of Policy & Management Counselors at Law ATTN: Under Secretary Energy One Constitution Plaza Division Hartford, Connecticut 06103 80 Washington Street Hartford, Connecticut 06115 I-Natural Resources Defense Council 917 15th Street, N. W Ronald C. Haynes, Regional Washington, D. C.
20005 Adninistrator Nuclear Regulatory Commission Northeast Nuclear Energy Company Region 1 Office ATTN: Superintendent 631 Park Avenue Millstone Plant King of Prussia, Pennsylvania 19406 P. O. Box 128 Waterford, Connecticut 06385 Mr. W. G. Counsil, Senior Vice President huclear Engineering and Operations Mr. Richard T. Laudenat Northeast Nuclear Energy Company Manager, Generation Facilities Licensing Post Office Box 270 Northeast Utilities Service Company Hartford, Connecticut 06101 P. O. Box 270 Hartford, Connecticut 06101 Resident Inspector c/o U. S. NRC P. O. Box Drawer KK Niantic, Connecticut 06357 Waterford Public Library Rope Ferry Road, Route 156 Waterford, Connecticut 06385 First Selectman of the Town of Waterford Hall of Records 200 Boston Post Road Waterford, Connecticut 06385 l
John F. Opeka Systems Superintendent Northeast Utilities Service Company P. O. Box 270 Hartford, Connecticut 06101 U. S. Environmental Protection Agency Region I Office ATTN: Regional Radiation Representative JFK Federal Building Boston, Massachusetts 02203 4
ENCLOSURE 1 MEETING ATTENDEES NRC James J. Shea Harley Silver t
Ashok Thadani NUSCo Paul Blasioli John Bichel SAI*
Bahman Stefi Paul Amico Robert Liner i
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