Part 21 Report - 1997-540

 
 

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

SITE: INDIAN POINT 2                        EN NUMBER:32731

DOCKET:  05000247                        EVENT DATE: 08-06-97

RX TYPE:  PWR                            EVENT TIME: 00:00

VENDORS:  W-4-LP                        NOTIFY DATE: 08-06-97

EMERGENCY CLASS: N/A  REGION: 1 STATE: NY      TIME: 15:00

OPS OFFICER: LEIGH TROCINE            

10 CFR SECTION: CCCC  21.21               UNSPECIFIED PARAGRAPH

UNIT  SCRAM   RX   INIT  INITIAL MODE     CURR   CURRENT MODE

      CODE   CRIT  PWR                    PWR

 2    N       Y    100   POWER OPERATION  100   POWER OPERATION



10 CFR PART 21 NOTIFICATION REGARDING W-2 SWITCHES WITH TEXIN    

STARWHEELS                                                       

                                                                 

THE FOLLOWING TEXT IS A PORTION OF A FACSIMILE RECEIVED FROM THE 

LICENSEE:                                                        

                                                                 

"WESTINGHOUSE TECHNICAL BULLETIN NO. NSD-TB-74-10, DATED 9/9/74, 

AS REVISED ON 9/30/74, REPORTED THAT THE STARWHEELS, MADE OF A   

MATERIAL CALLED TEXIN, IN CERTAIN TYPES OF W-2 SWITCHES HAVE     

EXHIBITED FAILURES.  ALL PLANTS WITH SUCH SWITCHES INSTALLED,    

INCLUDING [INDIAN POINT UNIT 2], WERE INSTRUCTED TO REPLACE ALL  

TEXIN STARWHEELS IN THE AFFECTED W-2 SWITCHES.  HOWEVER, THE     

TECHNICAL BULLETIN NOTED THAT 'ALL SWITCHES HAVING MORE THAN     

THREE STAGES' CAN BE 'POSITIVELY IDENTIFIED AS NOT AFFECTED BY   

THIS BULLETIN.'"                                                 

                                                                 

"DURING THE RECENT REFUELING OUTAGE AT [INDIAN POINT UNIT 2], IT 

WAS DISCOVERED THAT SEVERAL SAFETY-RELATED W-2 SWITCHES, HAVING  

MORE THAN THREE STAGES, DID INDEED HAVE THE TEXIN STARWHEELS.    

THIS WAS VERIFIED BY THE CHEMICAL TESTS AND INFRARED             

SPECTROSCOPIC STUDIES AT CATHOLIC UNIVERSITY."                   

                                                                 

"THE AFFECTED STARWHEELS [HAD] BEEN REPLACED PRIOR TO UNIT 2     

RESTART.  IN ADDITION, THE DISCOVERY OF THE TEXIN STARWHEELS IN  

THESE W-2 SWITCHES HAS BEEN COMMUNICATED TO INDUSTRY VIA THE INPO

NUCLEAR NETWORK."                                                

                                                                 

THE LICENSEE STATED THAT THIS ISSUE AFFECTED THE RECIRCULATION   

SWITCHES FOR SAFETY INJECTION (RECIRCULATION MODE).              

                                                                 

THE LICENSEE PLANS TO NOTIFY THE NRC RESIDENT INSPECTOR.