When a welder is to be qualified for welding or torch brazing of piping on board ship in a limited or restricted space, the space restrictions shown in connection with Figure 57.05-3(a) or (b) shall be used when welding and brazing the test joint.
Figure 57.05-3(a)-Limited space restriction for pipe welding performance qualification
Figure 57.05-3(b)-Limited space restriction for pipe brazing performance qualification
46 C.F.R. §57.05-3