United States Nuclear Regulatory Commission - Protecting People and the Environment

Information Notice No. 88-46, Supplement 4: Licensee Report of Defective Refurbished Circuit Breakers

                                  UNITED STATES
                          NUCLEAR REGULATORY COMMISSION
                      OFFICE OF NUCLEAR REACTOR REGULATION
                             WASHINGTON, D.C.  20555

                               September 11, 1989


Information Notice No. 88-46, SUPPLEMENT 4:  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, 2, and 3.  It is 
expected 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 
Company (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 refurbished electrical equipment.

The NRC conducted followup inspections and reviews at selected CB distributors 
and at companies suspected of selling used or refurbished CBs.  Plant-related 
information obtained from these sources was summarized in Supplement 2 to 
IN 88-46.

Supplement 3 to IN 88-46 described obsolete GE type THEF CBs that were sup-
plied to the Prairie Island Nuclear Generating Plant by Bud Ferguson's 
Industrial Control and Supply, Inc., as used equipment, but that had 
misrepresented manufacturers' rating labels and UL labels.









8909050103
.                                                       IN 88-46, Supplement 4
                                                       September 11, 1989
                                                       Page 2 of 3


When reviewing the IN 88-46 Supplement 2, Attachment 1 listing of shipments of 
circuit breakers/electrical equipment for their plant, the McGuire Nuclear 
Station identified several procurements of CB parts and accessories as opposed 
to complete CBs.  This equipment consisted of a Westinghouse shunt trip coil 
(Model No. 2609D39624), Westinghouse frames (Model Nos. LA2600F, LA3600F, 
MA2800F), and Westinghouse interchangeable trip units for various two and 
three pole CBs.  The model numbers for these trip units are listed below:

     HLA 21250TM                   HLA 2400TM
     HLA 3600T                     HLB 3200T
     HMA 3600T                     HMA 3700T
     HKA 3225T                     HNB 2700T

These CB replacement parts were purchased from WESCO in Charlotte, North 
Carolina.  The purchase order documentation indicates that these parts were 
shipped directly to McGuire from Molded Case Circuit Breakers Company, Temple 
City, California.

During physical inspection of those items located in the warehouse, McGuire 
staff noted that the items were not new, but in fact were used equipment.  
Listed below are the identifying differences and specific reasons which can be 
used to determine if CBs and parts are potentially used and/or refurbished.

SHUNT TRIP COILS

     photocopied labels
     general appearance rough and worn (specifically plunger rod bent and
       worn)
     variety of plunger tips
     hardware variances from coil to coil (screw styles and mounting bases)
     different types of lead wires

INTERCHANGEABLE TRIP UNITS

     photocopied labels with information typed on
     no UL label or date codes
     general appearance dirty and used
     terminals wire brushed
     different types of mounting bolts (allen head, slotted head)
     trip mechanisms soldered in place 
     screws soldered to trip mechanism

Addressees may wish to review the adequacy of their recent receipt inspections 
of similar equipment in view of this information and ensure that conditions 
such as described above would have been identified. 
.                                                       IN 88-46, Supplement 4
                                                       September 11, 1989
                                                       Page 3 of 3


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:  R. P. McIntyre, NRR
                    (301) 492-3215

Attachment:  List of Recently Issued NRC Information Notices
.                                                       Attachment 
                                                       IN 88-46, Supplement 4 
                                                       September 11, 1989 
                                                       Page 1 of 1

                             LIST OF RECENTLY ISSUED
                             NRC INFORMATION NOTICES
______________________________________________________________________________
Information                                  Date of 
Notice No._____Subject_______________________Issuance_______Issued to_________

89-65          Potential for Stress          9/8/89         All holders of OLs
               Corrosion Cracking in                        or CPs for PWRs. 
               Steam Generator Tube 
               Plugs Supplied by 
               Babcock and Wilcox 

89-64          Electrical Bus Bar Failures   9/7/89         All holders of OLs
                                                            or CPs for nuclear
                                                            power reactors. 

89-63          Possible Submergence of       9/5/89         All holders of OLs
               Electrical Circuits Located                  or CPs for nuclear
               Above the Flood Level Because                power reactors. 
               of Water Intrusion and Lack 
               of Drainage 

89-62          Malfunction of Borg-Warner    8/31/89        All holders of OLs
               Pressure Seal Bonnet Check                   or CPs for nuclear
               Valves Caused By Vertical                    power reactors. 
               Misalignment of Disk 

89-61          Failure of Borg-Warner Gate   8/30/89        All holders of OLs
               Valves to Close Against                      or CPs for nuclear
               Differential Pressure                        power reactors. 

88-48,         Licensee Report of Defective  8/22/89        All holders of OLs
Supp. 2        Refurbished Valves                           or CPs for nuclear
                                                            power reactors. 

89-60          Maintenance of Teletherapy    8/18/89        All NRC Medical 
               Units                                        Teletherapy 
                                                            Licensees. 

89-59          Suppliers of Potentially      8/16/89        All holders of OLs
               Misrepresented Fasteners                     or CPs for nuclear
                                                            power reactors. 

89-58          Disablement of Turbine-Driven 8/3/89         All holders of OLs
               Auxiliary Feedwater Pump Due                 or CPs for PWRs. 
               to Closure of One of the 
               Parallel Steam Supply Valves 
______________________________________________________________________________
OL = Operating License
CP = Construction Permit 
Page Last Reviewed/Updated Tuesday, November 12, 2013