United States Nuclear Regulatory Commission - Protecting People and the Environment

CANADIAN WORCESTER CONTROLS LT 29328 09-13-95 OTH
LICENSEE: CANADIAN WORCESTER CONTROLS LTD    
SITE: .CANADIAN WORCESTER CONTROLS LT.        EN NUMBER:29328
DOCKET:                                  EVENT DATE: 09-13-95
RX TYPE:                                 EVENT TIME: 00:00
VENDORS:                                NOTIFY DATE: 09-13-95
EMERGENCY CLASS: N/A  REGION: 0 STATE:         TIME: 17:31
OPS OFFICER: CHAUNCEY GOULD           
10 CFR SECTION: NINF                      INFORMATION ONLY     
                CCCC  21.21               UNSPECIFIED PARAGRAPH

CANADIAN WORCESTER CONTROLS LTD REPORTED THAT IT SUPPLIED 3/4"   
BALL VALVES TO COMANCHE PEAK AND BRUNSWICK POWER PLANTS THAT

WERE
DEFECTIVE.                                                       
                                                                 
THE VALVES WHICH WERE SUPPLIED BY CANADIAN WORCESTER CONTROLS LTD
(CWCL) CONTAIN BOLTING THAT ORIGINATED FROM A HEAT LOT CHARGE    
THAT CONTAINED A DEFECTIVE PRODUCT.  THE SUSPECT MATERIAL IS A   
3/8" - 16 SA 193 B7 HEX CAPSCREW PRODUCT MARKETING B7, C, TS6,   
S5.  PRELIMINARY INVESTIGATION BY THE FASTENER SUPPLIER (CARDINAL
INDUSTRIAL PRODUCTS) HAS REVEALED THAT AS MANY AS 25% OF THE     
FASTENERS FROM THE HEAT LOT CHARGE MAY HAVE MECHANICAL
PROPERTIES
BELOW THE SPECIFIED MINIMUM.  A TEST BLANK FROM THE AFFECTED HEAT
LOT WAS ORDERED BY CWCL AT THE TIME OF PURCHASE, AND THE         
SUBSEQUENT TESTING BY AN INDEPENDENT LAB PROVIDED RESULTS WHICH  
MEET THE MATERIAL SPECIFICATION REQUIREMENT.                     

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