Welding and brazing the westinghouse fusion magnet coil

The magnet assembly required high quality welded and brazed construction. The quality standards were achieved by developing and testing of production procedures, training and qualification of craftsmen per the procedures, and in process monitoring, control, and non-destructive testing. Modification of standard production equipment and development of unique and specialized tools was necessary in order to repeatably obtain high quality welds and brazes. These procedures resulted in conductor joints that had a resistance of only 10^-9ohms tested at 20 KA and 3 Tesla. The two hundred plus tube welds and approximately five hundred header welds collectively passed the required helium leak test with no detectable leaks.