Oxyacetylene Heating And Cutting Flashcards
What are the one way check valves for?
To prevent back flow of gases.
How can you identify an oxygen hose?
The connections are right-handed threads, and the hose is green.
What are the normal sizes for welding tips?
00, 0 and 1 through 10.
How do you clean the welding tips?
Use the tip cleaners.
What should you do before installing the heating and welding tip?
Check the O-ring seal prior to installing.
Wear goggles when using oxyacetylene equipment to protect your eyes from:
a) light
b) heat
c) sparks and slag
d) all of the above
d) all of the above
Technician A says its acceptable to carry a disposable lighter in your pocket when using oxyacetylene equipment. Technician B says nylon clothing is much better to wear than cotton when using oxyacetylene equipment. Which technician is correct?
a) Technician A
b) Technician B
c) both technicians
d) neither technicians
d) neither technicians
To check for leaks in oxyacetylene equipment you should use:
a) a match
b) a lighter
c) leak detection fluid
d) soap and water
c) leak detection fluid
Shop ventilation is adequate when cutting which of the following with oxyacetylene equipment?
a) galvanized sheet metal
b) a cadmium coated muffler
c) a piece of metal joined with lead-tin alloy solder
d) none of the above
d) none of the above
If grease is exposed to pure oxygen, the grease can explode:
a) without ignition
b) only if a spark ignites it
c) only if a flame ignites it
d) after prolonged heating
a) without ignition
When oxygen from a cylinder is being used, the valve should be opened:
a) fully
b) no more than 2 turns
c) no more than 1 turn
d) no more than 1/2 turn
a) fully
Fusible plugs in acetylene cylinders are located:
a) in the top if the cylinder
b) in the bottom of the cylinder
c) both a and b
d) neither a or b
c) both a and b
Acetylene should be drawn from a cylinder only when the cylinder is:
a) in any position
b) upright
c) on its side
d) upside down
b) upright
As cylinder pressure decreases, the outlet pressure from a pressure regulator:
a) goes down
b) remains constant
c) goes up
d) goes up first and then down
b) remains constant
Acetylene hoses used with oxyacetylene are:
a) red
b) green
c) orange
d) purple
a) red
When you are finished using oxyacetylene equipment:
a) the oxygen and acetylene should be shut off at the cylinders and the regulators should be left alone
b) the oxygen and acetylene should be shut off at the torch valves and the regulators should be left alone
c) the oxygen and acetylene should be shut off at the cylinders and the torch valves and the regulators should be left alone
d) the oxygen and acetylene should be shut off at the cylinders and the regulators should be backed out completely.
d) the oxygen and acetylene should be shut off at the cylinders and the regulators should be backed out completely
The most suitable flame to use when heating with oxyacetylene equipment is:
a) an acetylene flame
b) a carbonizing flame
c) an oxidizing flame
d) a neutral flame
d) a neutral flame
When oxyacetylene equipment is used for heating, the acetylene regulator is adjusted to:
a) the pressure used when balancing the torch
b) the pressure recommended by the manufacturer
c) 7 kPa (1 psi) per tip size
d) 105 kPa (15 psi) per tip size
a) the pressure used when balancing the torch
A backfire that occurs when using an oxyacetylene heating tip might occur because:
a) oxygen pressure is higher than acetylene pressure
b) acetylene pressure is higher than oxygen pressure
c) oxygen pressure is too low
d) acetylene pressure is too low
d) acetylene pressure is too low
The material that can be cut easily using an oxyacetylene torch cutting attachment is:
a) carbon steel
b) stainless steel
c) copper
d) aluminum
a) carbon steel
