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UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION WASHINGTON D.C. 20555 June 8, 1989 Information Notice No. 88-46, SUPPLEMENT 3: LICENSEE REPORT OF DEFECTIVE REFURBISHED CIRCUIT BREAKERS Addressees: All holders of operating licenses or construction permits for nuclear power reactors. Purpose: This information notice supplement is being provided to present additional information regarding the supply of surplus or refurbished electrical equip- ment such as circuit breakers (CBs) to nuclear power plants as discussed in NRC Information Notice (IN) 88-46 including Supplements 1 and 2. It is ex- pected that recipients will review this information for applicability to their facilities. However, suggestions contained in this information notice do not constitute NRC requirements; therefore, no specific action or written response is required. Description of Circumstances: Information Notice No. 88-46 discussed a report by Pacific Gas and Electric (PG&E) that defective refurbished CBs were supplied to PG&E's Diablo Canyon Nuclear Power Plant by a California electrical supplier. Supplement 1 to IN 88-46 provided a list of shipments of CBs to nuclear power plants or nuclear utilities by five California companies that may have supplied defective re- furbished electrical equipment. The NRC conducted followup inspections and investigations at selected CB distributors and at companies suspected of selling used or refurbished circuit breakers. Plant-related information obtained from these sources was summarized in Supplement 2 to IN 88-46. During an inspection at the Prairie Island Nuclear Generating Plant (PINGP) conducted October 25-November 4, 1988, NRC identified that 16 General Electric Company (GE) THEF 136050 CBs had been purchased by PINGP from Lakeland Engi- neering Equipment Company of Minneapolis, who in turn, obtained these CBs from Bud Ferguson's Industrial Control and Supply, Inc. (BF) of Whittier and Lake Forest, California and had them shipped directly to PINGP. The packing slip/ invoice from BF indicated that one of the breakers was new and that 15 were 8906050143 . IN 88-46, Supplement 3 June 8, 1989 Page 2 of 2 used. Visual inspection of seven of the CBs located in PINGP warehouse showed that six of the breakers were in boxes with labels that appeared to be repro- ductions of original GE labels. Most of the breakers showed scratches and tool marks on the casings and screw heads consistent with used or refurbished equipment. Subsequent detailed examination of seven of these CBs by GE confirmed that five CBs had counterfeit rating labels and all seven had counterfeit U/L labels. The breakers were tested for thermal performance, calibration and dielectric strength. Two of the breakers failed to meet the acceptance criteria. Two CBs were then opened and inspected internally and showed no evidence of tampering or counterfeit parts. No specific action or written response is required by this information notice. If you have any questions about this matter, please contact the technical contact listed below or the Regional Administrator of the appropriate NRC regional office. Charles E. Rossi, Director Division of Operational Events Assessment Office of Nuclear Reactor Regulation Technical Contact: K. R. Naidu, NRR (301) 492-0980 Attachment: List of Recently Issued NRC Information Notices .
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