ML19260D328
| ML19260D328 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 12/31/1979 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8002080330 | |
| Download: ML19260D328 (1) | |
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6 DEC 311979 MEMORANDUM FOR:
R. Reid, Chief Operating Reactors Branch #4 Division of Operating Reactors FROM:
G. Lainas, Chief Plant Systems Brancn Division of Operating Reactors
SUBJECT:
RANCHO SECO FIRE PROTECTION - HIGH PRESSURE INJECTION PUMP Items 3.1.30(2) and 3.1.31(2) of our fire protection safety evaluation report (SER) on Rancho Seco dated February 28, 1978, noted that Sacramento Municipal Utility District (SMUD) hao connitted for the makeup pump room and the containment penetration valve area (east) to either reroute cables, install fire barriers, or insulate conduits associated with the high pressure injection system. Our SER also requested further details on these modifications when the design is developed. By letter of November 30, 1979, SM'JD indicated that they had decided to remove the cables associated with the Channel B high pressure injection pump from these two fire areas, and route the cab!es instead through areas where a design basis fire will not make the high pressure injection system inoperative. With this modification, safe shutdown could be achieved even if a fire were to damage all cabling and equipment in either the makeup pump rocm or the containment penetration valve area (east). We find that the designs that have been croposed for implementing modifications 3.1.30(2) and 3.1.31(2) will provide the protection we intended in tne Rancho Seco fire protection SER, and are therefore acceptable.
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[G.Lainas, Chief Plant Systems Branch Division of Operating Reactors
Contact:
H. George, X27136 cc:
D. Eisenhut R. Tedesco W. Gammill V. Benaroya R. Ferguson T. Wambacn D. Garner H. George 1938 357 h
8002080 33O y
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