United States Nuclear Regulatory Commission - Protecting People and the Environment


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.                                                       





Page Last Reviewed/Updated Thursday, March 29, 2012