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Home NRC Library Document Collections Events, Reports Associated with Part 21 Reports 1998

Part 21 Report - 1998-470

 
 


LICENSEE: ROCHESTER GAS & ELECTRIC CORP.     

SITE: GINNA 1                               EN NUMBER:34363

DOCKET: 05000244                         EVENT DATE: 06-08-98

RX TYPE: PWR                             EVENT TIME: 00:00

VENDORS: W-2-LP                         NOTIFY DATE: 06-08-98

EMERGENCY CLASS: N/A  REGION: 1 STATE: NY      TIME: 11:49

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

 1    N       Y    100   POWER OPERATION  100   POWER OPERATION



10CFR PART 21 INVOLVING A REFURBISHED WESTINGHOUSE DB-25 CIRCUIT 

BREAKER RECEIVED WITH A MISSING PART.                            

                                                                 

THE LICENSEE RECEIVED A WESTINGHOUSE DB-25 CIRCUIT BREAKER       

REFURBISHED                                                      

IN 1992 BY WESTINGHOUSE REPLACEMENT COMPONENTS SERVICES,         

MONROEVILLE, PA. THE REFURBISHED DB-25 CIRCUIT BREAKER WAS       

RETURNED TO GINNA WITH A MISSING PIN IN THE OPERATING MECHANISM. 

THE ABSENCE OF THIS PIN IS BELIEVED TO HAVE CONTRIBUTED TO THE   

FAILURE OF THE "SWP1B" CIRCUIT BREAKER TO CLOSE                  

ON A MANUAL SIGNAL FROM THE MAIN CONTROL BOARD.  THIS IMPLIES    

THAT THE POTENTIAL EXISTS FOR THE BREAKER NOT TO CLOSE ON AN     

AUTOMATIC DEMAND                                                 

AND THEREFORE NOT BE AVAILABLE TO PERFORM ITS SAFETY FUNCTIONS.  

                                                                 

THERE ARE 41 PERMANENTLY INSTALLED DB-25 BREAKERS IN THE SCREEN  

HOUSE AND TURBINE BUILDINGS AT GINNA.  ALL OF THE REMAINING      

BREAKERS WERE VISUALLY INSPECTED TO VERIFY THE PIN IN QUESTION   

WAS INSTALLED.  NO OTHER BREAKERS WERE FOUND TO BE MISSING THE   

PIN.                                                             

                                                                 

THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR.

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