A specialist welding procedure to BS EN 15614-5 has been developed and approved for welding Zirconium tube endcaps. When the tubes are filled with Boron Carbide pellets, they are used as neutron-absorbing rods in the nuclear fuel industry.
Welder approval to BS EN ISO 9696-5 has been attained. This was a particularly delicate welding procedure as the tubes only measured 9.5mm in diameter with a wall thickness of 1.