ML17321A939
| ML17321A939 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/30/1985 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Dolan J AMERICAN ELECTRIC POWER SERVICE CORP., INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| References | |
| CAL-RIII-85-16, NUDOCS 8511040193 | |
| Download: ML17321A939 (4) | |
Text
Docket No. 50-315 Docket No. 50-316 CONFIRMATORY ACTION LETTER OCT gp tggg CAL-RIII-85-16 American Electric Power Service Corporation Indiana and Michigan Electric Company ATTN:
Mr. John E. Dolan Vice Chairman Engineering and Construction 1 Riverside Plaza
- Columbus, OH 43216 Gentlemen:
This letter confirms the telephone conversation between Mr. C. Hehl of this office and Mr. M. G. Smith, Jr. of your staff on October 29, 1985, related to an apparent improper response of the Reactor Protection System which occurred during a reactor trip event at D.
C.
Cook Unit 2 on October 29, 1985.
It is our understanding, with regard to this matter, that you will:
1.
Conduct a thorough review to determine if a trip signal actually was received by the Reactor Protection System (RPS).
2.
Determine why the reactor trip breaker failed to trip.
3.
Determine why two of the four steam generator feedwater isolation valves failed to close as anticipated following the trip.
4.
Maintain all affected equipment related to the affected Reactor Protection System train, to include inverter power sources, in the "as found" condition.
Therefore, take no action such as removing or tripping the reactor trip breaker which would destroy or cause to be lost, (other than necessary to protect the health and safety of the public) any evidence which would be needed to investigate or reconstruct this event.
5.
Review operator actions taken immediately following recognition of the failure to trip and determine if these actions were in accordance with your procedures and policies.
6.
Develop troubleshooting plans and procedures, and provide these to the NRC site team for their review and concurrence prior to initiating any trouble shooting of the effected equipment.
7.
Submit a formal report of your findings and conclusions to the NRC Region III Office within 30 days.
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CONFIRMATORY ACTION LETTER CAL-RIII-85-16 Ameri can Electri c Power Servi ce Corporation Og gp 885 8.
We fur'ther understand that startup of both Units 1 and 2 will not occur until authorization to restart is obtained from the Regional Administrator or his designee.
Please let us know immediately if your understanding differs from that set out above.
Sincerely, cc:
W.
G. Smith, Jr., Plant Manager DCS/RSB (RIDS)
Licensing Fee Management Branch Resident Inspector, RIII Ronald Callen, Michigan Public Service Commission EIS Coordinator, USEPA Region 5 Office Nuclear Facilities and Environmental Monitoring Section Or1gtne$
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