Torch

The purpose of fusible plugs on an acetylene cylinder is to provide a __________.

• means of draining condensation from the cylinder

• convenient place to fill the tank

• place on the tank to refill the acetone when it is depleted

• safety valve for excessive internal pressure to be released

Never release fuel gases __________

• in patio construction areas

• around fumes removal equipment

• in confined spaces

• none of these

Oxygen or fuel gas from a cylinder may be used only through ___________.

• any reducing regulator

• an approved gas specific pressure reducing regulator

• a ¼ inch copper coil

• a manifold unit

Which lubricant(s) should be used when connecting the parts of an oxy fuel gas welder?

• Oil

• Pipe-fitting compounds

• Thread lubricants

• None of these

Gas welding equipment should be systematically checked for leaks using ________.

• soap and water

• saltwater solution

• Thread lubricants

• non detergent soap and water solution

The oxygen cylinder should be turned on ________ when used in oxy-fuel gas welding.

• all the way

• ¾ turn

• ½ turn

• 1 turn

The acetylene cylinder valve should be opened __________ when gas welding.

• all the way

• one-fourth turn

• three fourths of a turn

• slightly

The acetylene cylinder valve wrench should be left in position to __________.

• close the valve promptly if the need arises

• prevent it from being lost

• prevent leakage

• make closing the cylinder valve easier

Threads on the acetylene hose are ___________.

• left hand threads

• right hand threads

• UNF – threads

• UNC – threads

Acetylene cylinders should be stored __________.

• apart from oxygen cylinders

• in an upright position

• away from combustibles

• all of these