Page 17 - CITS - Welder - Trade Theory

WELDER - CITS

iii Gloves must not be used to pickup hot job as the heat make them stiff, hard and difficult to use later.

iv Sleeves used to protect the arms of welder.
v Safety Shoes used to protect the feet of a welder from metal spatters.
vi Leg guard used to protect the legs and ankles of a welder.
Vii Helmet is used to protect the head and d hair of a welder.

viii Use of appropriate eye Shield or face protection form danger arc rays
Workshop safety in SMAW
i The welding shop should be well ventilated to protect the welders from fumes and suffocation. Make sure that
the exhaust system functions effectively an Confined spaces where fumes are dangerous and may cause
unconsciousness. A respirator also should be readily available to the welder so that can used it When need.
ii Never store flammable materials near the welding Shop
iii Tankers are container should never be welded unless these are free from any explosive materials or Vapours.

iv The movable screens should be available so that other may be saved from ray’s effect.
v Display posters reading “Do Not L00K AT THE ELECTRIC ARC”
vi Fire-fight fighting Extinguishers should be kept within the welding shop.
vii Store the scrap pieces in a Container.
viii Natural Light, water and transport facilities must be available in the welding shop.

ix First Aid box must be ready in the welding Shop
x Arc Welding booth should not be pained in such a colour which can reflect the lights.
Machine safety in SMAW
i Do not keep the machine in open space.

ii In DC welding generator do not put the strong switch on delta position directly. keep the switch on start position
first. Run it for a few second and put the switch in delta position.
iii Do not disconnect the cooling fan of welding generator.
iv Maintain the Cooling all level in the oil cooled welding transformer set and periodically drain the cooing oil from
the transformer and purify and then refill the transformer.
v Fix the input cable from the main to the machine and the electrode and earth Cables firmly.
vi Replace the carbon brushes of the DC. welding generate Whenever necessary

vi Do not clean any welding machine with water.
vii The dust and other impurities are to be removed by compressed dry air only.
ix Operate all the control knobs and handles gently.
x Avoid loose Connection at the mains power Supply, fuses switch board.
xi Switch off the mains power supply when welding has been completed
Accessories safety in SMAW

i Do not touch live, wires or objects that may carry or conducts electrical Current.
ii Ensure the welding and Earth cables are of Standard ampere range.
iii The Cables are to be joined only by sockets.
iv Use the right Capacity electrode holder and clamp.
v Ensure that cables are in good condition and fully insulated.
vi Avoid direct contact of electrode holders with work table or job or earth. Clamp.
vii Use a properly insulated electric holder.
vii Avoid over running of the trolley wheel etc on the welding or return cable.

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CITS : C G & M - Welder - Lesson 1-3