Introduction to Basic Manufacturing Processes and ... - always yours

44 Introduction to Basic Manufacturing Processes and Workshop Technology
2. One should not handle oxygen cylinders, valves, regulators, hoses or fittings with
oily hands.
3. Welder should not mix the gases in one cylinder.
4. No one should transfer the gas from one cylinder to another.
5. One should clearly mention on the cylinders the type of gas in it (i.e. oxygen,
acetylene, etc.).
6. One should use nose masks where the local exhaust ventilation is not practicable.
Insist the safety officer to provide proper ventilation system.
7. Always avoid skin contact with fluxes, which contain fluorides. If they will penetrate
the skin, they produce severe irritation.
8. No one should weld the parts, which are coated with toxic material such as lead,
cadmium, zinc, mercury, or paint containing toxic before materials. Any such coatings
must be removed prior to welding.
9. Acetylene gas should not be brought in contact with the unalloyed copper directly
(except in torch) which may result in a violent explosion.
(B) Arc welding
1. One should use protective clothing and eye protection devices while performing arc
welding operation, otherwise radiation from electric arc will damage the retina of
eyes. One has to be sure that other people standing nearby also uses eye-protection
devices from ultraviolet rays.
2. Always use ear protection devices such as muffler because excessive noise caused
during the process of arc welding may cause temporary or permanent hearing loss.
3. Welder should keep clothing and gloves dry.
4. Always keep welding cables free of grease and oil.
5. One should prevent the non-insulated portion of the electrode holder from touching
the welding ground or job-piece when the current is on.
6. Always keep the body insulated from both the work and the metal electrode holder.
7. One should carry out the welding process by standing on the insulating material
like dry wood rather than on a grounded metal structure.
8. It is easier and safer to establish an arc on a clean surface than on a dirty or rusty
one.
9. Always turn the welding machine off when it is not in use.
10. One should not change the polarity switch when the machine is under use. This will
burn the surface of the switch and the resulting arc can cause injury to the welder.
11. Always avoid using electrode holders with defective jaws or poor insulation.
3.10 FACTORY ACT REGULATIONS WITH REGARD TO SAFETY
The objective of avoiding loss of lives and other industrial losses through accidents lead to
follow the factory act regulation. For example Workman Compensation Act-1923 provides
employer’s liability for compensation. Compensation depend upon the condition that injury
must have resulted either in death or partial disablement of an employee for a period