Precautions for equipment installation in cold box of air separation unit

1.Beforeconnecting the pipe orifice of each container, clean white cloth shall be used to tie the orifice to prevent grease and dirt from entering.

2.When welding in the cold box and in the condensing evaporator, it is strictly forbidden for flame or arc to touch the surface of vessels and pipes.

3.The containers, valves, pipes and corresponding supports in the cold box, the surface of the cold box and the foundation surface shall not be stained with grease after installation, otherwise, degreasing treatment shall be carried out.