Translate

Safety Tips For Gas Welding Process



Welding technology involves the melting of metal to create goods. Welders work in a variety of different industries with many different pieces of equipment.It is a fabrication process used to join materials, usually metals or thermoplastics, together. During welding, the pieces to be joined (the workpieces) are melted at the joining interface and usually a filler material is added to form a pool of molten material (the weld pool) that solidifies to become a strong joint.The intense welding heat and the sources employed to produce it can be potentially dangerous.Compressed gas cylinders are used in ship’s engine room and deck for a variety of repair and manufacturing operations. The two most used types of gas cylinders for this purpose are oxygen and acetylene.

Therefore, to protect welders from injury and to protect building and equipment against fire, etc., a set of recommendations concerning safety and health measures for the welders and those concerned with the safety of the equipment’s etc., have been published by American Welding Society (AWS), Bureau of Indian Standards (BIS), Occupational Safety & Health Administration (OSHA) and many other International organizations.

When performing gas welding or cutting operation, following practical tips must be considered for safety and efficiency of operations and to avoid accidents while carrying out deck operations :-

  • Compressed gas cylinders must be handled with utmost care and always be secured in vertical position even if they are full or empty. Full and empty cylinders to be segregated and marked clearly.
  • Welding technician should never hang a torch with its hose on regulators or cylinder valves.
  • During gas weld working, if the welding tip becomes overheated it may be cooled by plunging the torch into water; close the acetylene valve but leave a little oxygen flowing.
  • Inspect equipment for leaks at all connections using approved leak-test solution.Inspect hoses for leaks and worn places.
  • Never store oxygen and acetylene cylinder together in one space whenever possible. Keep them separately in well ventilated spaces. Ensure when not in use, their caps should always be on them.
  • Always use the correct pressure regulators for a gas. Acetylene pressure regulator should never be used with any other gas.
  • Do not move the cylinder by holding the pressure regulator and also handle pressure regulators carefully.
  • Control valves and fittings should be kept free of oil and grease. Never operate cylinder valves and parts with oily and greasy hands.
  • Open cylinder valves slowly to avoid straining the mechanism of the pressure regulator.
  • Only open the acetylene cylinder valve 1/4 - 3/4 turn; leave wrench in place so the cylinder can be quickly closed in an emergency.
  • Open and light acetylene first, then open and adjust oxygen to a neutral flame.
  • For repairs, calibrations and adjustments purposes, the pressure regulators should be sent to the supplier.
  • Do cracking before connecting pressure regulator to the gas cylinder.
  • Inspect union nuts and connections on regulators before use; to detect faulty seats which may cause leakage of gas when the regulators are attached to the cylinder valves.
  • Close the acetylene torch valve first when shutting off the torch ( a "pop" might occur as the oxygen "blows out" the flame, but this eliminates the possibility of the flame burning up the acetylene line).
  • When finished, close cylinder valves, bleed the lines to take pressure off regulators, neatly coil hoses and replace equipment.
  • Have a fire extinguisher easily accessible at the welding site.
  • Never allow the hose to come into contact with oil or grease; these deteriorate the rubber and constitute a danger with oxygen.
  • Use the correct color hose for oxygen (green/black) and acetylene gas (red); never use oxygen hose for acetylene or vice versa.
  • Always protect the hose from being trampled on or run over. Avoid tangle and kinks. Never leave the hose so that it can be tripped over.

Follow by Email