ML19256G431
| ML19256G431 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 12/17/1979 |
| From: | Tibbitts D Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7912310286 | |
| Download: ML19256G431 (6) | |
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UNITED STATES
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g NUCLEAR REGULATORY COMMISSION y
g W ASHINGTON, D. C. 20555 a
- j DEC 171979 DOCKET NO. 50-395 APPLICANTS
- SOUTH CAROLINA ELECTRIC AND GAS COMPANY SOUTH CAROLINA PUBLIC SERVICE AUTHORITY FACILITY:
VIRGIL C. SUMMER NUCLEAR STATION, UNIT NO.1
SUBJECT:
SUMMARY
OF MEETING WITH SOUTH CAROLINA ELECTRIC AND GAS COMPANY ON NOVEMBER 7, 1979 On November 7,1979 we met with representatives of South Carolina Electric and Gas Company (SCE&G) and Gilbert / Commonwealth (Gilbert) to discuss the request for information issued to SCE&G as a result of the site visit for the fire protection review. The persons attending the meeting are listed in the Enclosure.
The fire protection request for information was issued to the applicants by a letter dated October 22, 1979. During the meeting, SCE8G presented its proposed For Items 3 through 20, it appeared that with minor modifications responses.
SCE&G's proposed response would resolve the staff position or concern.
Items 1 and 2 deal with protection of redundant cables, components and electri-cal equipment from exposure fires. During the meeting, SCE&G described the reevaluation that was being done to respond to our position.
In the re-evalua-tion, SCE8G had identified five groups of redundant components required for safe shutdown where two redundant components could be affected by a single exposure fire. The groups of redundant components were:
1.
High pressure injection pumps room coolers, 2.
Component cooling water pinps, 3.
Power transfonners for the pressurizer heaters, 4.
Service water ptraps, and 5.
Air supply fans for the service water pumphouse.
SCE&G concluded that where other redundant components are located in the same fire area, the layout of shield or structural walls precluded an exposure fire from affecting redundant components.
For the components listed above, we dis-cussed the fire protection alternatives that would be acceptable. For the pressurizer heater power transformers, the staff and SCE&G discussed on whether these transformers were essential for safe shutdown. We told SCE&G that we would have to consider this further and than get get back to them on this 1664 163 matter.
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fg With regard to the separation and protection of redundant instrumentation con-trol, and power cables, SCE&G is proposing an alternate means of shutting down the plant assuning a fire in the control room or the cable spreading areas.
The alternate means would include the control room evacuation panels and opera-tion at motor control centers. SCE&G had prepared a list of the ' equipment and cables that would require protection. Each fire area would be examined to assure (1) that redundant cables were separated by 20 feet or (2) that fire barriers are erected to protect one of the redundant cables. We stated that depending on the fire loading of a specific location, they should consider increasing the separation. SCE&G stated that their responses to Items 3 through 20 would be submitted in December 1979. An outline of their approach for Items 1 and 2 could be submitted then, but that the detailed analysis would not be ready until the first quarter of 1980.
)wL 'T Dean L. Tibbitts Light Water Reactors Branch No. 2 Division of Project Management
Enclosure:
Attendance List ccs w/ enclosure:
See next page i664 164 A
DEc 1 1979 Mr. E. H. Crews, Jr., Vice President and Group Executive - Engineering and Construction South Carolina Electric & Gas Company P. O. Box 764 Col mbia, South Carolina 29218 cc:
Mr. H. T. Babb General Manager - Nuclear Operations and System Planning South Carolina Electric & Gas Company P. O. Box 764 Colmbia, South Carolina 29218 G. H. Fischer, Esq.
Vice President & Group Executive South Carolina Electric & Gas Company P. O. Box 764 Columbia., South Carolina 29218 Mr. William C. Mescher President & Chief Executive Officer South Carolina Public Service Authority 223 North Live Oak Drive Moncks Corner, South Carolina 29461 Mr. William A. Williams, Jr.
Vice President South Carolina Public Service Authority 223 North Live Oak Drive Moncks Corner, South Carolina 29461 Wallace S. Murphy, Esq.
General Counsel South Carolina Public Service Authority 223 North Live Oak Drive Moncks Corner, South Carolina 29461 Troy B. Conner, Jr., Esq.
Conner, Moore & Corber 1664 165 1747 Pennsylvania Avenue, N. W.
Washington, D. C.
20006 Mr. Mark B. Whitaker, Jr.
Manager, Nuclear Licensing South Carolina Electric & Gas Company P. O. Box 764 Colmbia, South Carolina 29218 Mr. O. W. Dixon Group Manager, Production Engineering South Carolina Electric & Gas Company P. O. Box 764 Colmbia, South Carolina 29218
Mr. E. H. Crews, Jr.
DEC 1 -' 1979 cc: Mr. Brett Allen Bursey Route 1 Box 93C Little Mountain, South Carolina 29076 Resident Inspector / Summer Power Station c/o U. S. Nuclear Regulatory Comission P. O. Box 1047 Irmo, South Carolina 29063 1664 166
ENCLOSURE Drc 1 1979 ATTENDANCE LIST MEETING WITH SCEf6 NOVEFUER 7,1979 NRC - STAFF G. Harrison O. Chopra S. Iludson D. Tibbitts GAGE-BABC0CK R. Barnes SCEE6 M. Whitaker C. Price A. Koon A. Wactor G. Webb GILBERT / COMBI)NWE ALTH R. Brannon 1664 167