ML18054B328
| ML18054B328 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 12/05/1989 |
| From: | De Agazio A Office of Nuclear Reactor Regulation |
| To: | Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| Shared Package | |
| ML18054B329 | List: |
| References | |
| PAL-89-038, PAL-89-38, TAC-59123, NUDOCS 9001020074 | |
| Download: ML18054B328 (4) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Docket No. 50-255 Serial No. PAL-89-038 Mr. Kenneth W. Berry Director, Nuclear Licensing Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201
Dear Mr. Berry:
December 5, 1989
SUBJECT:
SAFETY EVALUATION RELATED TO PALISADES PLANT COMPLIANCE WITH 10 CFR PART 50.62 (TAC 59123)
We have completed our review of th~ Palisades Plant design for conformance to the requirements ~f 10 CFR Part 50.62 (ATWS Rule);
We conclude from our review that the designs of the diverse scram system (DSS), diverse turbine trip (OTT),
and the diverse auxiliary feedwater actuation system (DAFAS) to achieve conformance to the ATWS Rule are acceptable subject to the following post-implementation items:
- 1. The qualifications of the Telemechanique JlO relay, the Rochester Instrument Model ET-1219, and Isolation Devices, are performed, and the devices have passed the qualification tests.
- 2. A Failure Modes and Effects Analysis (FMEA) of the RPS/AFAS power supply configuration, including loss-of-voltage, over/under voltage, and over/under frequer.cy, has been performed, and the FMEA confirms that the possibility of common mode failure of both the RPS and AFAS has been minimized.
We note Consumers-Power Gompany's intent to propose technical specifications to establish operability and surveillance requirements for the ATWS equipment.
We are evaluating the need for such technical specifications; the results of the evaluation, when completed, will be made available. However, Consumers Power Company should not delay the installation and operation of the ATWS equipment pending the outcome of this evaluation.
Consumers Power Company letter dated.June 30, 1987, -indicated that installation of the ATWS equipment would be delayed for two refueling outages. This schedule was reconfirmed in a telephone conversation with your staff on March 1, 1989.
Thus, the ATWS equipment is to be installed prior to startup from the next refuel ir19 outage expected to be about February 1991.
- Cor:sulr.ers PO\\'ier Company is 9001020074. 891205.
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- requested to inform the Commission. in writing. of any significant change to the
~stimated completion schedule identified herein. Also, Consumers Power Company is requested to inform the Commission, in writing. when the action has actually been implemented and the modification is determined to be operational.
Enclosure:
Safety Evaluation cc w/enclosure:
St:e next page 0
Sincerely,
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Albert ~De Ag;;io~~;~~roject Manager Project Directorate III-1 Division of Reactor Projects - III, IV, V & Special Projects Office of Nuclear Reactor Regulation requested to inform the Commission, in writing, of any significant change to the estimated completion schedule identified herein. Also, Consumers Power Company is requested to inform the Commission, in writing, when the action has actually been implemented and the modification is determined to be operational.
Enclosure:
Safety Evaluation cc w/enclosure:
See next page 0 I SJIUBUTJON
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'f)1. (/89 Sincerely,
@iginal signed by Albert W. De Agazio, Sr. Project Manager Project Directorate III-1 Division of Reactor Projects - III, IV, V & Special Projects Office of Nuclear Reactor Regulation
Mr. *Kenneth W. Berry Consumers Power Company cc:
M. I. Miller, Esquire Sidley & Austin 54th Floor One First National Plaza Chicago, Illinois 60603 Mr. Thomas A. McNish, Secretary Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Power Company 212 West Michigan Avenue Jackson, Michigan 49201 Regional Administrator, Region III U.S. Nuclear Regulatory Conunission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Jerry Sarno Township Supervisor Covert Township 36197 M-140 Highway Covert, Michigan 49043 Office of the Governor Room 1 - Capitol Building Lansing, Michigan 48913 Mr. Gerald B. Slade Plant General Manager Palisades Plant 27780 Blue Star Memorial Hwy.
Covert, Michigan 49043 Resident Inspector c/o U.S. Nuclear Regulatory Conmission Palisades Plant 27782 Blue Star Memorial Hwy.
Covert, Michigan 49043 Palisades Plant Nuclear Facilities and Environmental Monitoring Section Office Division of Radiological Health P.O. Box 30035 Lansing, Michigan 48909