To contain backing gas in a pipe of small diameter, or short sections of pipe, ____.
A) the ends of the pipe are capped
B) the pipe is plugged on either side of the weld
C) the pipe is plugged using water-soluble plugs
D) the pipe is plugged using soft plastic bags

Question

Quizplus · Accepted Answer

The ends of the pipe are capped to contain backing gas in a pipe of small diameter, or short sections of pipe.

To Contain Backing Gas in a Pipe of Small Diameter