Oxy-Fuel equipment And Procedures Flashcards
What is the best type of clothing used for brazing and cutting?
Leather
Goggles are worn when cutting and brazing to protect the eyes from?
Light rays, heat rays, spark and slag
The most suitable footwear for cutting and brazing is?
High top leather safety boots
What three elements are necessary for a fire to occur
Fuel, heat, oxygen
Which type of fire extinguisher should be used on a class C fire
Dry chemical
What is the purpose of the disc that is mounted on one side of the oxygen cylinder valve
This rupture disk is a safety device designed to burst at 3200 psi and allow a slow controlled escape of gas
When oxygen is being used the cylinder valve should be open
Fully
The maximum safe working pressure for acetylene is?
15psi
What does the term draw limit mean?
The maximum amount of acetylene that can be drawn from the cylinder without drawing liquid acetone
Fusible plugs in acetylene cylinders are located?
On the shoulder and bottom of the cylinder
The acetylene cylinder must be used
In a vertical position
What color is the acetylene hose used with oxyacetylene equipment?
Red
Testing for leaks on Oxsee acetylene equipment should be done with
Leak detection fluid
The function of a regulator in oxyacetylene equipment is ?
Reduce cylinder pressure to working pressure
what type of thread is an acetylene bottle
Left-hand thread, you can determine this by the notches on the hex head
What type of threads is on an oxygen bottle
Right hand threaded
What is the melting temperature of fusible plugs
Approximately 212°F or 100°C
To prevent drawing off acetone with the acetylene, a cylinder must not be emptied faster then
1/7 its capacity per hour (or in less than seven hours)
What is the critical point of acetylene
28 psi pressure at 70 Fahrenheit or 21°C
What are the properties of acetylene
Acetylene gas is colorless but has a strong pungent odor
What is the chemical symbol for acetylene
C2h2
What is acetylene pressure never used over
15psi
What is a general rule when setting pressure on an oxyacetylene touch
As a general rule, one pound pressure in used per tip size
