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WorksheetsOAW Section 2
Total questions: 13
Worksheet time: 7mins
When lighting the torch what tool is used:
match
pocket lighter
friction lighter
flint
Welding on a tank that has contained flammable liquid is:
easy to do
done something
never done in the shop
dependent on your skills
You must report any leaks of cylinders or connections immediately to the:
custodian
instructor
maintenance department
welder nearest you
Due to the heat from the open flame, point the welding torch:
down and away from yourself
away from all flammables
away from other students
all of these
When oxy-acetylene welding or cutting, the shade lens to be used is a:
#1-2
#5-6
#8-9
#11-12
The majority of fires that occur around welding and cutting equipment are in:
the gas welding area
the production set up area
the arc welding area
those areas where portable equipment being used
Cutting and welding should not be done where an open flame could be dangerous. Areas would include:
in or near rooms containing flammable vapors and liquids
where flammable liquids are stored and used
in a room with high lint or flammable dust or exposed loose combustibles materials
all of the above
What precautions do you take if you have to weld or cut in an area where combustibles materials cannot be removed or covered?
have a fire extinguisher close at hand
dampen the exposed area with water before welding
have a fire watch stand by while the welding is being done
all of the above
If in doubt about any welding operation what should you do first?
check with another student
check reference materials in your notebook
check with the instructor
none of the above
If an acetylene cylinder develops a leak and it cannot be tightening the valve and packing unit:
set the cylinder outside the building away from possible fire, notify supplier immediately
run away quickly
use "welder's emergency stop leak"
check leaks with open flame
When welding torch backfires (pops and/or blows itself out) you should:
close the oxygen needle valve first
close the acetylene needle valve first
drop the equipment and run
inspect all the connections slowly and carefully
If the welding torch flashes back (the flame begins to burn back inside the equipment) and the torch squeals, smokes, or the handle gets hot:
close the oxygen needle valve first
close the acetylene needle valve first
drop the equipment and run
inspect all the connections slowly and carefully
After you have finished welding, what should be done to turn off the entire system before you leave class?
close the valves at the cylinders and manifold
bleed the lines
back off the regulator adjusting screws
all of the above
