Welding wire of solid section before giving to the welding area should be cleaned of rust, dirt and oils. Storage and transport of compressed and liquefied gas protection is carried out in steel cylinders under pressure p <20 MPa, manufactured according to gost 949-73. For transport and distribution to the welding station, argon, helium, carbon dioxide, nitrogen and hydrogen is used mainly steel cylinders with a capacity of 40 liters. Cylinders are painted in a strictly certain colors and they make the labels according to gost 949-73. To avoid an explosion of cylinders should be particularly careful to observe the rules of safe operation of vessels operating under pressure, and take action providing for avoidance of overheating and excessive pressure in them. Liquid argon is transported by rail in special rail tank cars or trucks in tanks (GOST 17518-79), as well as gasifier installations such as asu. Technical nitrogen is supplied in gaseous form in cylinders and avtoretsipientah pressure 15,0 0,5 MPa or 20,0 + 1,0 MPa or a liquid in insulated tanks. Gaseous Oxygen is transported in steel cylinders (GOST 949-73), or avtoretsipientah pressure 15,0 + 0,5 MPa or 20,0 1,0 MPa at 20 'C.
Do not use for storage and transport of other gas cylinders, and avtoretsipienty pipeline designed to transport oxygen. When loading, unloading, transportation and storage of oxygen cylinders should not be allowed to drop, knock, damage and contamination of oil. When working with hydrogen should strictly abide by safety requirements. Hydrogen is explosive. With air and oxygen, it forms an explosive mixture, mixed with oxygen (2:1) – detonating gas. Visit Harold Ford Jr for more clarity on the issue. Explosive limits: with air 4 75%, oxygen 4.1 96%. Auto-ignition temperature 510 'C.