In order to protect the safety of welding and cutting workers, improve sanitation, prevent accidents and reduce economic losses, the standard is formulated.
1 Scope
This standard specifies the safety of welding and cutting the basic principles, applicable to all kinds of welding and cutting operations.
Water, chemical, railway, shipping and other specialized welding and cutting of the safety standards, standards of professional content of this specific supplement.
2 gas welding and cutting equipment and safe operation
2.1 General safety requirements
2.1.1 The maximum working pressure of acetylene ban over 147kgf/cm2) gauge pressure.
2.1.2 prohibit the use of copper, silver or copper is more than 70% of the copper alloy in contact with acetylene instruments, pipes and other parts.
2.1.3 acetylene generator, tempering, oxygen and liquefied petroleum gas cylinder, pressure reducer and other measures should be taken to prevent freezing, thawed if frozen application of hot water, baking, or prohibiting the use of fire naughty beat with sticks thaw.
2.1.4 cylinders, containers, pipes, meters and other joints Apply soapy water method should be adopted leak, do not use open flame leak.
2.1.5 cylinders, acetylene bottles should be firmly erected, or in a special rubber tire of the car to use.
2.1.6 Prohibition of the Use of electromagnetic sucker, rope, chain and other lifting all kinds of gas cylinders used in welding and cutting.
2.1.7 cylinders, acetylene bottles, should avoid sun exposure on the subject, or by direct radiation and heat shock sensitive areas.
2.1.8 oxygen, dissolved acetylene gas cylinders, etc., should not be emptied, the cylinder must be left less than 98 ~ 196kPa (1 ~ 2kgf/cm2) gauge pressure of residual gas.
2.1.9 cylinder paint color logo should be consistent with national award "to Safety Supervision" provision prohibiting the alteration, filling and non-standard paint color does not match the gas cylinder.
2.1.10 should be equipped with hand wheel cylinders or special hand opening and closing valve to move.
2.1.11 After work, work space, and shift work should be closed before the valve, put bottle caps.
2.1.12 prohibit the use of gas cylinders as a climbing stand and pad bearing heavy loads.
2.1.13 retained I need to re-filling gas cylinders, valve should be closed, tighten the bottle cap, marked with empty words or signs.
2.1.14 Oxygen, acetylene pipes, gas cylinders shall be painted with the corresponding color and marked with paint color names provided, for easy identification.
2.2 acetylene generator