ML20215M989
| ML20215M989 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 10/27/1986 |
| From: | Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-86-003, IEB-86-3, NUDOCS 8611040137 | |
| Download: ML20215M989 (2) | |
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Director Nuclear Ucensing SM M General Offices: 1945 West Pernell Road, Jackson. MI 49201 e (517) 788-1636 October 27, 1986 James G Keppler, Administrator Region III i
US Nuclear Regulatory Commission 799. Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT -
RESPONSE TO IEB 86-03, POTENTIAL FAILURE OF MULTIPLE ECCS PUMPS DUE TO SINGLE FAILURE OF AIR-OPERATED VALVE IN MINIMUM FLOW RECIRCULATION LINE Nuclear Regulatory Commission letter dated October 8, 1986, transmitted.IEB 86-03 which requires Consumers Power Company to:
- 1) promptly determine whether or not Big Rock Point has the described ECCS pump single failure i
vulnerability; 2) promptly instruct all operating shifts of the problem and measures to recognize and mitigate the problem and to promptly develop and implement corrective actions which bring Big Rock Point into compliance with GDC35 if the problem exists; 3) within 30 days of receipt of the bulletin, provide a written report'to the NRC which identifies whether or not the problem exists, and if the problem exists (or existed), include justification for continued operation and identify actions that have been or'are being implemented to ensure safe plant operations; and 4) if the problem exists (or existed), provide a written report within 90 days of receipt of the bulletin informing the NRC of the schedule for long-term resolution of problems-identi-fled as a result of the bulletin. Consumers Power Company's response is provided herein.
This bulletin describes single failures of minimum flow recirculation lines' containing air-operated isolation valves which could result in common-cause.
failure of all ECCS pumps in a system. Review of this bulletin against Big Rock Point design concludes that the described concerns-are.not applicable.
Big Rock Point design does not utilize minimum. flow recirculation on any ECCS' pumps. This was also the case in our review of two earlier NRC documents (IE Bulletin 86-01 and IE Information Notice 85-94) which address similar con-~
l cerns. No further actions are planned in response to this bulletin.
$U Y Kenneth W Berry Director, Nuclear Licensing CC Director, Office of Nuclear Reactor Regulation Director, Office of. Inspection and Enforcement
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NRC Resident' Inspector - Big Rock Point TM 1
OC1086-0172-NLO2 8611040137 861027 PDR ADOCK 05000155 00T 2 9 W G
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.e CONSUMERS POWER COMPANY Big Rock Point Plant Docket 50-155 - License DPR-6 RESPONSE TO IE BULLETIN 86-03 At the request of the Commission and pursuant to the Atomic Energy Act of 1954 and the Energy Reorganization Act of 1974, as amended, and the Commission's Rule and Regulations thereunder, Consumers Power Company submits our response to IE Bulletin 86-03 dated October 8, 1986, entitled, " Potential-Failure of Air-Operated Valve in Minimum Flow Recirculation on Line."
Consumers Power Company's response is dated October 27, 1986.
CONSUMERS POWER COMPANY
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F 4 Buckman, Vice Pres Nuclear Operations Sworn and subscribed to before me this 27th day of October, 1986.
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Elaine E Buehrer,' Notary Public Jackson County My commission expires October 31, 1989 l
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