BASIC ELEMENTS OF WELDING

BASIC ELEMENTS OF WELDING Current adjustment amps

Welding Machine Electrode holder

SAFETY IN WELDING The body of the welding machine should be earth The terminals of the welding cable should be provided with lugs and kept tight

The joint in the cable should be made with terminals kept tight and well insulated with heat resistant tape The cable should be free from joints at least for a length of three meters from electrode holder to avoid shock hazard Other electrical cable should not be kept laid with welding cable to avoid insulation damage

For the return lead only proper cable should be used using rods angles channels etc should be avoided

Never change electrode with bare hands or wet gloves when standing on wet floorsHAZARDS Fire Shock

Health hazards

Hazards to eye & face from welding brazing soldering and cutting operations Intense light and radiation from welding arc

Flying sparks

Metal sputter and slag chips

HEALTH HAZARDS

I. Exposure to toxic gases generated during welding may produce one or more of the following effects

II. In flammation of the lungs (chemical phenmonitis)

III. Pulmonary edema (swelling and accumulation of fluids)

IV. Chronic bronchitis

V. Asphyxiation

HAZARDS AT SITE Working over load

Working in confined spaces

Welding or cutting tanks or vessels

Tripping hazards