Welding What task are you undertaking? WL0 - Advice for managers Welding WL2 - Welding in confined/limited/restricted spaces WL3 - Welding Fume Control Cutting etc WL14 - Manual gas and oxy-gas cutting WL15 - Plasma arc cutting: fixed equipment WL16 - Arc-air gouging (air-carbon arc gouging) Allied jobs WL18 - Surface preparation: Pressure blasting (small items) WL19 - Surface preparation: Pressure blasting (medium-sized items) WL20 - Surface preparation: Pressure blasting (Large items) WL21 - Weld cleaning with pickling paste