Part 21 Report - 1998-300

LICENSEE: NAMCO CONTROLS SITE: NAMCO CONTROLS EN NUMBER:34166 DOCKET: EVENT DATE: 05-01-98 RX TYPE: EVENT TIME: 00:01 VENDORS: NOTIFY DATE: 05-01-98 EMERGENCY CLASS: N/A REGION: 3 STATE: OH TIME: 15:55 OPS OFFICER: CHAUNCEY GOULD 10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH 10 CFR PART 21 REPORT - NAMCO CONTROLS' LIMIT SWITCHES HAVE AN IMPREGNATION SEALANT ANOMALY. DURING A REVIEW OF A RECEIPT INSPECTION CLOSED PURCHASE ORDER, IT WAS DISCOVERED THAT THE SUPPLIER WHO IMPREGNATED THE EA180 HOUSING DID NOT USE THE QUALIFIED SEALANT. THE LIMIT SWITCHES AFFECTED WERE MANUFACTURED FROM 12/18/97 THROUGH 03/27/98. THE IMPREGNATION SUPPLIER USED IMPREX 95-1000A WHICH WAS NOT PREVIOUSLY QUALIFIED BY NAMCO CONTROLS. NAMCO USES IMPREX 95-500, BUT IT IS BEING DISCONTINUED DUE TO ENVIRONMENTAL BENEFITS. IT HAS BEEN DETERMINED THAT APPROXIMATELY 112 IMPROPERLY IMPREGNATED HOUSINGS WERE SHIPPED TO NUCLEAR CUSTOMERS.

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