ML18066A212
| ML18066A212 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 05/18/1998 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML18066A209 | List: |
| References | |
| 50-255-98-03, 50-255-98-3, NUDOCS 9806290073 | |
| Download: ML18066A212 (2) | |
Text
NOTICE OF DEVIATION Consumers Energy Company Palisades Nuclear Generating Plant Docket No. 50-255 License No. DPR-20 During an NRC Inspection conducted on March 25 through April 10, 1998, two deviations from commitments were identified. In accordance with the "General Statement of Policy and Procedure for NRC Enforcement Actions," NUREG-1600, the deviations are listed below.
A.
NRC letter to Consumers Power Company dated July 19, 1988, entitled "Palisades Plant - Response to Generic Letter 82-33 Conformances to Regulatory Guide 1.97, Instrumentation for Light -Water-Cooled Nuclear Power Plants To Assess Plant and Environs Conditions During and Following An Accident," allowed the use of temperature instruments to monitor CCW flow.
Regulatory Guide (RG) 1.97 stated a range for CCW flow instrumentation of 0-110 percent of flow.
FSAR Appendix 7C, "Regulatory Guide 1.97 Instrumentation," page 21 of 29, which described the commitment to RG 1.97, Revision 3, stated the range of the temperature instruments used to measure CCW flow (TE-0912 and TE-0913) was 0-180 °F.
Contrary to the above; CCW flow could not be measured from 0-110 percent of flow using the listed temperature instruments because their indication range was 0-180 °F and recent sensitivity studies indicated that the outlet temperature of CCW from the.
shutdown cooling heat exchanger would be 184 °F. (50-255/98003-02(DRS))
B.
Licensee letter to the NRC dated January 24, 1978, stated that the recommendations of Regulatory Guide 1.6 would be implemented, in that, no provision would exist for automatically transferring loads between redundant power sources.
NRC Safety Evaluation Report dated April 7, 1978, confirmed this commitment.
Facility Change FC-364, "Feeder Change for Instrument Bus Y-01, Revision 0, implemented this commitment and powered bus Y-01 from Motor Control Center (MCC) 1 and non-safety related MCC 3.
Contrary to the above, FC-854 moved the backup power source from MCC 3 to MCC 2, a redundant power source, which resulted in Bus Y-01 being able to automatically transfer between two safety r~lated _busses vi~ transfer swit~h Y.:-?O, _
9806290073 980518 PDR ADOCK 05000255 G
NOTICE OF DEVIATION Please provide to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, D.C. 20555, with a copy to the Regional Administrator, Region Ill, and a copy to the NRC resident inspector at the facility that is the subject of this Notice, in writing within 30 days of the date of this Notice, (1) the reason for the deviation, or if contested, the basis for disputing the deviation, (2) the corrective steps that have been taken and the results achieved, (3) the corrective steps that will be taken to avoid further deviations, and (4) the date when your corrective action will be completed. Where good cause is shown, consideration will be given to extending the response time.
Dated at Lisle, Illinois this th day of May, 1998