Oxy-Fuel equipment And Procedures

Question 0

What is the best type of clothing used for brazing and cutting?

Answer 0

Leather

Question 1

Goggles are worn when cutting and brazing to protect the eyes from?

Answer 1

Light rays, heat rays, spark and slag

Question 2

The most suitable footwear for cutting and brazing is?

Answer 2

High top leather safety boots

Question 3

What three elements are necessary for a fire to occur

Answer 3

Fuel, heat, oxygen

Question 4

Which type of fire extinguisher should be used on a class C fire

Answer 4

Dry chemical

Question 5

What is the purpose of the disc that is mounted on one side of the oxygen cylinder valve

Answer 5

This rupture disk is a safety device designed to burst at 3200 psi and allow a slow controlled escape of gas

Question 6

When oxygen is being used the cylinder valve should be open

Answer 6

Fully

Question 7

The maximum safe working pressure for acetylene is?

Answer 7

15psi

Question 8

What does the term draw limit mean?

Answer 8

The maximum amount of acetylene that can be drawn from the cylinder without drawing liquid acetone

Question 9

Fusible plugs in acetylene cylinders are located?

Answer 9

On the shoulder and bottom of the cylinder

Question 10

The acetylene cylinder must be used

Answer 10

In a vertical position

Question 11

What color is the acetylene hose used with oxyacetylene equipment?

Answer 11

Red

Question 12

Testing for leaks on Oxsee acetylene equipment should be done with

Answer 12

Leak detection fluid

Question 13

The function of a regulator in oxyacetylene equipment is ?

Answer 13

Reduce cylinder pressure to working pressure

Question 14

what type of thread is an acetylene bottle

Answer 14

Left-hand thread, you can determine this by the notches on the hex head

Question 15

What type of threads is on an oxygen bottle

Answer 15

Right hand threaded

Question 16

What is the melting temperature of fusible plugs

Answer 16

Approximately 212°F or 100°C

Question 17

To prevent drawing off acetone with the acetylene, a cylinder must not be emptied faster then

Answer 17

1/7 its capacity per hour (or in less than seven hours)

Question 18

What is the critical point of acetylene

Answer 18

28 psi pressure at 70 Fahrenheit or 21°C

Question 19

What are the properties of acetylene

Answer 19

Acetylene gas is colorless but has a strong pungent odor

Question 20

What is the chemical symbol for acetylene

Answer 20

C2h2

Question 21

What is acetylene pressure never used over

Answer 21

15psi

Question 22

What is a general rule when setting pressure on an oxyacetylene touch

Answer 22

As a general rule, one pound pressure in used per tip size