United States Nuclear Regulatory Commission - Protecting People and the Environment


LICENSEE: COOPER ENERGY SERVICES             

SITE: COOPER ENERGY SERVICES                EN NUMBER:29653

DOCKET:                                  EVENT DATE: 11-06-95

RX TYPE:                                 EVENT TIME: 00:00

VENDORS:                                NOTIFY DATE: 11-29-95

EMERGENCY CLASS: N/A  REGION: 1 STATE: PA      TIME: 13:30

OPS OFFICER: LEIGH TROCINE            

10 CFR SECTION: CCCC  21.21               UNSPECIFIED PARAGRAPH



10 CFR PART 21 REPORT FROM COOPER ENERGY SERVICES REGARDING A    

POTENTIAL DESIGN DEFECT OF THE KSV EMERGENCY DIESEL GENERATOR    

SYSTEM                                                           

                                                                 

ON NOVEMBER 6, 1995, BRAIDWOOD REPORTED TO COOPER ENERGY SERVICES

THAT DURING MAINTENANCE ACTIVITIES, EXCESSIVE WEAR AND RUST WAS  

NOTED IN THE UPPER PORTION OF THE GOVERNOR DRIVE ASSEMBLY        

(ASSEMBLY NO. KSV-17-6).  THE FOLLOWING DAY, BRAIDWOOD REPORTED  

THAT THE OIL HOLE IN THE TOP FLANGE OF THE BEARING RETAINER DID  

NOT APPEAR TO EXTEND THROUGH THE INSIDE OF THE FLANGE.  THE      

REPORT INDICATED THAT THIS WAS DUE TO A SLEEVE REPAIR OF THE BORE

BLOCKING THE OIL HOLE.                                           

                                                                 

THE LACK OF OIL IN THIS AREA COULD RESULT IN FAILURE OF THIS     

ASSEMBLY WHICH IN TURN COULD RESULT IN EMERGENCY DIESEL GENERATOR

INOPERABILITY.  DUE TO THE POTENTIAL OF THIS DEFECT AND THE EASE 

OF VERIFICATION, COOPER ENERGY SERVICES HAS RECOMMENDED THAT ALL 

UTILITIES VERIFY AN OPEN OIL PASSAGE IN THIS ASSEMBLY.  COOPER   

ENERGY SERVICES HAS ALSO RECOMMENDED THAT ALL UTILITIES VERIFY   

THE SIMILAR OVERSPEED GOVERNOR AND DRIVE ASSEMBLY (NO. KVS-17-7).

                                                                 

THE ASSEMBLY IS INSTALLED ON ALL COOPER-BESSEMER KSV EMERGENCY   

DIESEL GENERATORS EXCEPT AT ZION AND COOPER.  SIMILAR ASSEMBLIES 

FOR THESE STATIONS ARE NO. KVS-17-1 AT ZION AND COOPER, NO.      

KVS-17-2 AT ZION, AND NO. KVS-17-5 AT COOPER.                    

                                                                 

THE NRC OPERATIONS CENTER ALSO NOTIFIED THE REGION 4 FIELD OFFICE

(RANDY HUEY).                                                    



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