ML19350D220
| ML19350D220 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/06/1981 |
| From: | Scholl R, James Shea Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TASK-08-04, TASK-8-4, TASK-RR LSO5-81-04-005, LSO5-81-4-5, NUDOCS 8104140274 | |
| Download: ML19350D220 (5) | |
Text
I Dock t No. 50-245 M
6 1981 LS05-81-04-005 0
LICENSEE:
Northeast Nuclear Energy Compar.y FACILITY: Millstone Unit 1
/
j
SUBJECT:
SUMMARY
OF APRIL 1,1981 MEETING
?
Northeast huclear Energy Company (NNECO) and NRC representatives (attendance list enclosed) met in the Bethesda NRC office on April 1, 1981 to resolve differences between these organizations regarding
" Containment Electrical Penetrations", Systematic Evaluation Program (SEF) Topic No. VIII-4. These differences were identified by NNEC0 in a letter to NRC dated January 29, 1981.
The NNEC0 letter was in response to our request in NRC letter dated October 30, 1980 to inform us if the as-built facility differed from the licensing basis assumed in our assessment (copy enclosed to NRC 10/30/80 letter).
By letter to NNEC0 dated March 27, 1981, the staff requested further clarification.
The following items, taken from this latest request to NNECO, were discussed in detail during the meeting to assure that NNECO is fully aware of our technical concerns and provides information that is useful in our evaluation:
1.
Backup protection for penetrations like X-101 A and X-105D.
2.
Protection of parallel conductors and seals if an open circuit should develop.
3.
Circuit design and theory of operation for differential current l
protection of pump motor circuits for l
(a) Motor Faults l
l (b)
Conductor Faults at the penetration (single phase and bolted faults).
4.
An analysis of how the design of the differential protection satisfies the single failure criterion.
5.
A description of testing methods and results for both seals on electrical penetrations.
I e...... a
6.
Th2 basis for y:ur assumptian that single failures in electrical circuits will b3 shsrt circuits instead of op:n circuits in parallel conductors.
7.
A copy of any relevant proprietary data relating to qualification of the electrical penetrations.
The NNEC0 representatives agreed to submit within thirty days, documen-tation of their responses at the meeting as part of their response to our March 27, 1981 request for additional information.
- 'SM S R mo holl, Engineer i im J. Shea Project Manager Systematic Evaluation Program tiperating Reactors Branch #5 Branch Division of Licensing Division of Licensing
Enclosures:
As stated cc w/ enclosures:
See next page
William H. Cuddy, Esquire Connecticut Energy Agency Day, Berry & Howard ATTN: Assistant Directcr Counselcrs at Law Research and Policy One Constituticn Plaza Dtvelopment Hartford, Connecticut 06103 Department of Planning and
)
Energy Policy J
Natural Resources Defense Council 20 Grand Street 9
91715th Street, N. W.
Hartford, Connecticut 06106 Washington, D. C.
20005
{
Director, Criteria and Standards Division c
Northeast Nuclear Energy Cogany Office of Radia"on Programs ATTN: Superintendent (ANR-460)
Millstone Plant U. S. Environmental Protection P. O. Box 128 Agency Waterford, Connecticut 06385 Washington, D. C.
20460 Mr. James R. Himmelwright U. S. Environmental Protection Northeast Utilities Service Cogany Agency P. O. Box 270 Region I Office Hartford, Connecticut 06101 ATTN: EIS C0ORDINATOR JFK Federal Building Resident Inspector Boston, Massachusetts 02203 c/o V. S. NRC P. O. Box Drawer KK Mr. W. G. Counsil, Senior Vice President Niantic, Connecticut 06357 Nuclear Engineering and Operations Northeast Nuclear Energy Company Waterford Public Library Post Office Box 270 Rope Ferry Road, Route 156 Hartford, Connecticut 06101 Waterford, Connecticut 06385 First Selectman of the Town of Waterford Hall of Records 200 Boston Post Road Waterford, Connecticut 06385 John F. Opeka Systems Superintendent Northeast Utilities Service Cogany P. O. Box 270 Hartford, Connecticut 06101
[
ATTENDANCE LIST _
MEETING 0F APRIL 1, 1981 MILLSTONE 1 - SEP TOPIC VIII-4 CONTAINMENT PENETRATIONS Name Telephone Number Affiliation
[
James J. Shea (301) 492-7231 NRC Robert Hermann (301)492-8414 NRC p
L Raymond Scholl, Jr.
(301) 492-7472 NRC Steven E. Mays (208)526-9226 EG&G, Idaho, Inc.
N.K. Trehan (301)492-8906 NRC Mike Bain (203) 666-6911 (x3714)
Northeast Utilities David B. Vail (203) 666-6911 (x3153)
Northeast Utilities Gen. Elec. Eng.
MEETING
SUMMARY
DISTRIBUTION O
OI ORB #5 reading J. 01shinski D. Crutchfield J. Shea R. Scholl OELD OISE(3)
J'l H. Smith ACRS (16)
R. Hermann N.K. Trehan i
NSIC TERA P og R
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