Protecting People and the EnvironmentUNITED STATES NUCLEAR REGULATORY COMMISSION
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).
