Part 21 Report - 1997-800

LICENSEE: CONVAL, INC. SITE: CONVAL, INC. EN NUMBER:33144 DOCKET: EVENT DATE: 10-24-97 RX TYPE: EVENT TIME: 00:00 VENDORS: NOTIFY DATE: 10-24-97 EMERGENCY CLASS: N/A REGION: 1 STATE: CT TIME: 14:09 OPS OFFICER: STEVE SANDIN 10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH 10CFR21 REPORT - FIVE (5) CONVAL FORGED VALVE BODIES 1"-1500# DESIGN, #5, Y-GLOBE, STOP AND CHECK VALVE, WHICH ARE IDENTIFIED BY CONVAL'S BASIC FIG. # 1.00-12G2J-S165F AND FIG. # 1.00-12C2-S165F SUPPLIED TO BOTH MAINE YANKEE ATOMIC POWER (3 VALVES) AND INDIANA & MICHIGAN POWER (D.C. COOK 1 & 2) (2 VALVES) MAY HAVE A DEFECT RELATED TO A POSSIBLE CRACK WITHIN THE FORGING WALL AT THE DIE FLASH LINE. ONLY ONE OF THE FIVE VALVES IS KNOWN TO BE INSTALLED AT THE D.C. COOK SITE. THE FORGINGS FOR THESE FIVE VALVES ARE IDENTIFIED AS IDEAL FORGE HEAT CODE LOT "M7", WHICH IS STAMPED ON EACH BODY FORGING. CONVAL DISCOVERED THE FORGING DEFECT DURING AN INVESTIGATION OF A VALVE RETURNED BY A CUSTOMER. IDEAL HAS TAKEN CORRECTIVE ACTION TO ELIMINATE THE PROCESSING PROBLEMS. THE AFFECTED NUCLEAR POWER PLANTS HAVE BEEN NOTIFIED BOTH VERBALLY AND IN WRITING.

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