United States Nuclear Regulatory Commission - Protecting People and the Environment


LICENSEE: CONSOLIDATED EDISON CO. OF N.Y./NEW

SITE: INDIAN POINT 3                        EN NUMBER:34155

DOCKET:  05000286                        EVENT DATE: 04-29-98

RX TYPE:  PWR                            EVENT TIME: 10:30

VENDORS:  W-4-LP                        NOTIFY DATE: 04-30-98

EMERGENCY CLASS: N/A  REGION: 1 STATE: NY      TIME: 15:39

OPS OFFICER: CHAUNCEY GOULD           

10 CFR SECTION: CCCC  21.21               UNSPECIFIED PARAGRAPH

UNIT  SCRAM   RX   INIT  INITIAL MODE     CURR   CURRENT MODE

      CODE   CRIT  PWR                    PWR

 3    N       Y    100   POWER OPERATION  100   POWER OPERATION



PART 21 REPORT ON FAILURE OF 480 VAC BREAKER DUE TO LACK OF      

LUBRICATION.                                                     

                                                                 

AN ENGINEERING EVALUATION CONCLUDED THE WESTINGHOUSE TYPE DS-416 

CIRCUIT BREAKER FAILED TO OPEN ON DEMAND BECAUSE LUBRICATION AT  

KEY PIVOT POINTS                                                 

IN THE BREAKER MECHANISM WAS MISSING.  THE LACK OF PROPER        

LUBRICATION WAS DETERMINED TO BE THE RESULT OF A BREAKER OVERHAUL

PERFORMED BY POWER DISTRIBUTION TECHNOLOGY (PDT) WHICH REMOVED   

THE LUBRICANTS AND FAILED TO REAPPLY THEM.  PDT HAD OVERHAULED   

THE FAILED BREAKER AND THREE OTHER TYPE DS-416 BREAKERS IN 1994  

IN ACCORDANCE WITH THE LICENSEE'S PURCHASE ORDER WHICH CONTAINED 

SPECIFIC REQUIREMENTS RELATED TO LUBRICATION.  THE LACK OF       

LUBRICATION ON THE BREAKERS OVERHAULED BY PDT, WHICH IS NO LONGER

IN BUSINESS, COULD HAVE PREVENTED A BREAKER FROM PERFORMING ITS  

SAFETY FUNCTION, RESULTING IN A SUBSTANTIAL SAFETY HAZARD.       

                                                                 

THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR.                





Page Last Reviewed/Updated Thursday, March 29, 2012