ML19210E667
| ML19210E667 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 12/03/1979 |
| From: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| TASK-06-04, TASK-15-20, TASK-6-4, TASK-RR NUDOCS 7912050497 | |
| Download: ML19210E667 (1) | |
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- Area Code 517708-0550 December 3, 1979 Director, Nuclear Reactor Regulation Att Mr Dennis L Ziemann, Chief Operating Reactors Branch No 2 US Nuclear Regulatory Commission Washington, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT - CONTAINMENT PURGE SYSTEM; CONSUMERS POWER COMPANY RESPONSE FOR ADDITIONAL INFORMATION By letter dated October 16, 1979, the NRC requested additional information regarding our submittals of November 29, 1978 and December 28, 1978 covering fuel handling accidents in containment and containment purging for Big Rock Point Plant.
The NRC letter requested that Consumers Power Company address single failure of the Big Rock Point containment isolation system as discussed in the EG&G Report No RE-A-79-045 (which is attached to the October 16, 1976 NRC letter) and provide a justification and/or proposed modification to the containment isolation system.
Consumers Power Company was also requested to address the concern over single manual control switches.
If they fail, it could result in the simultaneous failure of the redundant supply valves or redundant exhaust valves.
Consumers Power Company is currently reviewing proposed design changes to the containment isolation system to alleviate the concerns raised in the October 16, 1979 NRC letter.
Final solution is expected by February 1, 1980 and full details of the solution will be submitted to the NRC on or before this date.
David P Hoffman (Signed)
David P Hoffman Nuclear Licensing Administrator CC JGKeppler, USNRC 791205o 4 9,Q o
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