General:
Assembles, welds and repairs pressure vessels and pipes to pressure test standards.
Tasks Include:
- studies drawings or specifications to determine job requirements
- cleans and prepares metal surfaces by gouging, bevelling, grinding or filing
- cuts metal shapes using thermal cutting equipment
- aligns surfaces to be joined and secures by tack-welding or jigging
- selects welding techniques appropriate to type and thickness of metal
- connects electrode holders to power sources and adjusts controls on electrode holders or welding equipment to regulate currents
- forms arcs which generate heat to melt metal from electrodes, and deposits metal on workpieces to fuse joints
- guides electrodes along weld lines
- cleans and smooths welds by filing, chiselling or grinding, and examines welds for width of bead, penetration and precision
- cuts metal shapes using thermal cutting equipment
- may weld mild steel, alloy steel, stainless steel, aluminium and copper
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