ML19224D815
| ML19224D815 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/11/1979 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| GQL-0885, GQL-885, NUDOCS 7907170077 | |
| Download: ML19224D815 (2) | |
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Metropolitan Edison Company 1y
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Post Office Box 542 0
Reading Pennsylvania 19640 215 929-3601 writer's D. rect D.at Number July 11, 1979 G;L C635 Director of Kueleer Reactor Regulation Attn: R. W. Jeid, Chief Operating Reactors Branch No. h U.S. Nuclear Reg 21atory Co==ission Washington, D.C.
20555
Dear Sir:
Three Mile Island Nuclear S'.ation, Unit 1 (TMI-1)
Cperating Licence No. SPR-50 Docket No. 50-269 Fire Protection Progran In conpliance with Ite: 3.2.h, Adequacy of Detector System Design, of the TMI-1 Fire Protection Safety Evaluaticn Report, c study has been done to verify that the existing fire dete-tion systen, ahen cupplecented with the proposed add'ti5ns, will le adequate to detect a fire in a timely manner. Attached please f;na i su= mary of the results of the study. Eased en these resu'ts Me:-ic~ believes that the fire detecticn syste=, when fully impiccertel, will be adequate.
It should be noted that the design for tha proposed additions to the detection system was submitted to the RPC by our letter of March lo, 1979 (GQL 0393). Met-Ed requests NRC's approval cf the design of the proposed additions and concurrence with our position that the existing detection system, when supplemented with the proposed additions, vill be adequate to detect a fire in a timely manner.
Sincerely,
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J. G. Herbein
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Vice President
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July 11, 1979 GQL 0835 Three Mile Island !uclear Station, Unit 1 (TMI-1)
Docket :so. 50-2G9 Su==ary of Fire Detection Systen Adequacy Study Existine retecticn Systen The detectors in the existing system can be grouped by function:
1.
Fire Suppressica Syste: Actuators Detectors consist of c cke, heat, and ultraviolet units placed to conform with individual extinguishing system standards !iFFA 12, 12A, 13 and 15.
2.
Ventilation Syste: Centrols Icnizatien-type s:cke detecters are mounted in air ducts to ecmply with NFPA 90A.
3 General Area Alar s
!cnizatien-type s:cke detectors are scunted in areas in conformance with :TFPA 72D and 72E, or selectively located to =cnitor potential fire hazards as identified in the Fire Hazards Analysis.
Prcrcsed Detection Systen The detectors in the proposed additiens can be grcuped by location:
1.
Reactor Building A combinatien of detectors at identified fire hazards and detectors in the ventilation ducts vill provide adequate coverage for the Reacter Building.
2.
Intermediate, Auxiliary,and F"el Handling Buildings :
Various safety-related areas in these buildings vill be equipped with detectors in conformance with :TFPA 72D and 72E.
See cur let+.c of March 16,1979 (GQL 0393) for further details.
Cenclusion The existing detection system, upcn implementaticn of the proposed additions, vill be adec.uate to decect a fire in a timely manner.
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