Part 21 Report - 1996-750

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 Friday, January 31, 2020