United States Nuclear Regulatory Commission - Protecting People and the Environment

LICENSEE: AUTOMATIC VALVE                    
SITE: AUTOMATIC VALVE                       EN NUMBER:31229
DOCKET:                                  EVENT DATE: 10-28-96
RX TYPE:                                 EVENT TIME: 00:00
VENDORS:                                NOTIFY DATE: 10-28-96
EMERGENCY CLASS: N/A  REGION: 3 STATE: MI      TIME: 12:13
OPS OFFICER: CHAUNCEY GOULD           
10 CFR SECTION: NINF                      INFORMATION ONLY     
                CCCC  21.21               UNSPECIFIED PARAGRAPH

AUTOMATIC VALVE WAS NOTIFIED BY COMMONWEALTH EDISON-QUAD CITIES  
THAT A MAIN STEAM ISOLATION VALVED FAILED TO CLOSE WITHIN THE 3-5
SECONDS REQUIRED BY THEIR TS. FURTHER INSPECTION BY AUTOMATIC    
VALVE PERSONNEL DETERMINED THAT THE "6910-0X0" SOLENOID PLUNGER  
WAS TOO LONG. THE PROBABLE CAUSE FOR THE INCORRECT LENGTH        
APPEARED TO BE A MISSED MACHINING OPERATION AT TIME OF           
MANUFACTURE.                                                     
                                                                 
AUTOMATIC VALVE VERIFIED THAT ALL SOLENOID PLUNGERS OF THIS TYPE 
IN THEIR STOCK WERE THE CORRECT LENGTH AND ADDED A SPECIFIC      
INSPECTION REQUIREMENT FOR ALL FUTURE PLUNGERS. AUTOMATIC VALVE  
REQUESTED THAT ALL CUSTOMERS WHO RECEIVED KITS WITHIN THE LAST 2 
YEARS CONTAINING THIS TYPE PLUNGER TO VERIFY THE PLUNGER LENGTH. 

Page Last Reviewed/Updated Thursday, March 29, 2012