ML19319C456
| ML19319C456 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 09/09/1977 |
| From: | Engle L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8002140833 | |
| Download: ML19319C456 (3) | |
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'~7 DOCKET N0. 50-346 APPLICANT: TOLED0 EDIS0N COMPANY FACILITY:
DAVIS-BESSE NUCLEAR POWER STATION, UtiIT 1
SUBJECT:
SU;MRY OF MEETING HELD ON AUGUST 26, 1977 FOR ELECTRICAL FIRE BARRIER TESTING (DAVIS-BESSE, UNIT 1)
On August 25, 1977 a meeting was held with the Toledo Edison Company and their qualified fire protection consultant and the NRC staff (flRR and ISE).
An attendance list is provided in the Enclosure.
The purpose of this meeting was to address concerns originally identified by Ret )n 3 regarding electrical fire barrier barrier testing and the compatability with fire penetration seals at Davis-Besse. Unit 1.
This matter is stipulated as Item F-3, Attachment 2 to Facility Operating License l4PF-3 and states that this matter must be resolved before allowing the facility to proceed to ltde 1.
The information presented by the Toledo Edison Comnany was requested by the staff at a meeting held on August 17, 1977, between representatives of the Toledo Edison Company and the ?!RC staff (NRR and IaE). From the information presented by the applicant for identifying the worst case conditions (fire penetration seals as compared to the fire tests) and as verified by the ISE Region III insoector, the staff at the August 25, 1977 meeting concluded that sufficient information and supoorting statements by the Toledo Edison Company's qualified fire protection engineer provided a sufficient basis for allowing the Toledo Edison Company to oroceed to itde 1 with reference to Item F-3, Attachment 2 to License llPF-3.
However, the NRC staff will require additional docunentation and confirmatory fire tests within six months from the Toledo Edison Company to (1) verify the comparison of thertal properties betwaen the original BISCO SF 20 and the new Dow-Corning 30-6548 silicone foams (2) deconstrate the adequacy of the worst case actual wall size electrical penetrations that exceeded the wall size used in the fire test; and (3) demonstrate the adequacy of actual electrical penetrations that have less than one inch lateral siliccne foam coverage (clearance).
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SEP 5 1977 2-The staff will send the Toledo Edison Company a letter in about two weeks describing the details of the additional information and the tests required together with scheduling guidance.
Origir,1 sic ed by Jo!!n F iz Leon Engle, Project Manager Light Water Reactors Cranch No.1 Division of Project Management
Enclosure:
Attendance List ces w/ enclosure:
Toleco Edison Company ATIN: Mr. Lowell E. Roe Vice President, Facilities Development Edison Plaza 300 Madison Avenue Toledo, Ohio 43652 Donald H. Hauser, Esq.
The Cleveland Electric Illuminating Ccmpany P. O. Box 5000 Cleveland, Chio 44101 Gerald Charnoff, Esq.
Shaw, Pittman, Potts and Trowbridge 1800 M Street, N. W.
Washing +wn, D. C.
20036 Leslie Henry, Esq.
Fuller, Seney, Henry and Hodge 300 Madison Avenue Toledo, Ohio 43604 DPf1: LWR,N S1:1)1R, d,Q,_,
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ENCLOSURE ATTENDANCE LIST HEETING HELD CN AUGUST 25, 1977 (W,RNING WITH THE
_ TOLEDO EDISON COMPANY DAVIS SESSE, UNIT 1 DOCKET NO. 50-346 NRC - STAFF M&M PROTECTION CONSULTANTS V. Benaroy+-
J. Robinson J. Campbe' R. Weiss L. Engle F. JablonsK.
SHAW, PITTMA!i, POTTS & TROWBRIDGE P. Futtliews D. Notley G. Charnoff K. Seyfrit J. Stolz T. Tantling R. Tedesco V. Thomas TOLEDO EDISON COMPANY C. Comeck G. Eichenauer L. Haigh L. Roe orric a >
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