Oxygen And Acetylene Use And Safety Dept of （氧气和乙炔使用和安全部门的）.pdf

Oxygen And Acetylene Use And Safety AR Training Updated 2012Updated 2012 DMME Division of Mineral Mining Every time you use oxygen-acetylene equipment, if certain safety guidelines are not followed, it is thenot followed, it is the same as handling live explosives ready to go off……. What Is Oxygen? • Remember; oxygen is not air! • There is approximately 21% oxygen in normal air. • Oxygen is found naturally in the atmosphere. • It is produced industrially by distilling air below it’s freezing point. •• Pure oxygen does not burn or explode.Pure oxygen does not burn or explode. • Oxygen is an “accelerant”, it causes every thing it comes in contact with to burn hotter and faster. • Air has a vapor density of 1.000, Oxygen is heavier than air (1.105). This means if a oxygen bottle is leaking, the gas will settle in low areas before diffusing back into the atmosphere. • 30% oxygen in the atmosphere will cause things to burn or explode 8 times faster! Never use oxygen………. • in pneumatic tools- the oil and the gas pressure friction can cause a fire or explosion. • in oil pre-heating burners- these burners are set to burn with 21% oxygen to air ratio. • to start internal combustion engines- gasoline is flammable enough with 21% oxygen available.enough with 21% oxygen available. • to blow out pipelines- Leftover flammable or combustible vapors may still be present to cause an explosion. • to dust off clothing or work area- the oxygen will remain present in the cloth fibers causing them to be more flammable. • to create pressure. • for ventilation. Oxygen Storage • Compressed. • Stored in the pure state as a gas. • Stored in seamless containers of drawn steel plate at 2200psi at 0 70 F. • Hollow in construc