Page 19 - CITS - Welder - Trade Theory

WELDER - CITS

vi Use always the correct size spindle key.
vii Stand aside when checking the cylinders.

viii Do not remove the spindle key from the cylinders during welding. It will help to close the cylinders quickly in
case of an emergency.
ix Always keep the cylinders in upright positions. Keeping in view safely easy and handling.
x Always check the cylinders valves to clean the valves s socket before attaching the regulator.

xi Never attempt to transfer D.A. from one cylinder to another.
xii When returning empty DA cylinders make sure that the valves are closed to avoid evaporation of acetone.
xiii Never open or close the cylinder valve with hammer.

Accessories safety in gas welding and cutting

i Use only the type of hose recommended for use in gas welding.
ii Use only black coloured hoses for oxygen and maroon coloured ones for Acetylene gas.
iii Avoid damage to the hose pipes caused by rubbing against hard or sharp edges.
iv Ensure that the hoses do not cross the gangways.

v Do not add bits of hoses together to make up the length
vi Blow out the hose pipes before correcting to the blow pipe to remove dust or dirt.
vii Protect the regulators from water, dust oil etc.
vii Never attempt to inter Charge oxygen and acetylene regulators while fitting as it Can damage the threads.
viii Always remember the oxygen connection is right hand thread and acetylene be Connection have left hand
threads.
ix In the event of backfire shut both the blow piper valves (oxygen first) quickly and dip the blow pipe in the water.
xi While exhausting the flame, Shut off the acetylene valve first and then the oxygen to avoid backfire.
xii Check the leakage before using oxy-acetylene welding equipment.

xiii While igniting the flame point the blow pipe nozzle in a safe direction.
xiv Use the spark lighter to ignite the flame avoid hazards.
xv Toxic and poisonous flames given out during welding of some materials should be collected and clear as to be
prevented from inhaling.

xvi Containers used for the storage of Flammable materials should not be welded without through cleaning as
otherwise the containers may explode.
xvii Periodical checking of gauges of the regulators should be conducted to assure that their readings are correct.

xviii Pressure adjusting screw (Regulator Knob) should be turned slowly.

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