Part 21 Report - 1998-173

ACCESSION #: 9804150225 Illinois Power Company Clinton Power Station P.O. Box 678 Clinton IL 61727 Tel 217 935-5623 Fax 217 935-4632 Walter G. MacFarland IV Senior Vice President and Chief Nuclear Officer ILLINOIS POWER U-602979 An Illinova Company 4F. 140 April 7, 1998 Docket No. 40-561 Document Control Desk Nuclear Regulatory Commission Washington, D.C. 20555 Subject: 10CFR21 Final Report 21-97-059: Refurbished Circuit Breakers Returned From Nuclear Logistics Incorporated with Various Discrepancies Document Control Desk: On December 19, 1997, a Condition Report was initiated to investigate several discrepancies found during receipt inspection of three refurbished safety-related Westinghouse DHP circuit breakers at Clinton Power Station (CPS). The circuit breakers had been sent to Nuclear Logistics Incorporated (NLI) for refurbishment. Examples of discrepancies included: Loose nut on puffer diaphragm, trip latch clearance out of specification, main contact clearance out of specification, and main contact separation out of specification. Illinois Power (IP) initially decided to attempt to resolve these discrepancies under the Maintenance Work Request Program. However, once work had started, IEP personnel determined that the discrepancies were more complicated than originally thought and discontinued work on investigating and correcting the discrepancies. Subsequently, IP returned the circuit breakers to NLI to resolve the identified discrepancies. NLI was also requested to assist with determining the impact of the discrepancies on breaker performance and the reportability determination under 10CFR21. IP notified the NRC in letter U-602932 dated February 13, 1998, that the evaluation of this issue under 10CFR21 was not complete. IP has now completed the evaluation of this issue under 10CFR21 and concludes that it is not reportable. The discrepancies were evaluated by the supplier and found to have no adverse impact on the safety functions of the breakers; therefore, had the discrepancies gone uncorrected, they would not have created a substantial safety hazard. IP reviewed and concurs with the supplier evaluation. In addition, the discrepancies were identified during a material receipt inspection; the breakers were found unacceptable and, on that basis, could not have been installed. U-602979 Page 2 Additional information about this issue may be obtained by contacting F. D. Chenoweth, Nuclear Station Engineering Department, (217) 935-8881 extension 3658. Sincerely yours, W. G. MacFarland Senior Vice President RSF/mlh cc: NRC Clinton Licensing Project Manager NRC Resident Office, V-690 Regional Administrator, Region III, USNRC Illinois Department of Nuclear Safety INPO Records Center Nuclear Logistics Incorporated *** END OF DOCUMENT ***

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