Oxy-Fuel equipment And Procedures Flashcards

0
Q

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

A

Leather

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1
Q

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

A

Light rays, heat rays, spark and slag

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2
Q

The most suitable footwear for cutting and brazing is?

A

High top leather safety boots

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3
Q

What three elements are necessary for a fire to occur

A

Fuel, heat, oxygen

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4
Q

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

A

Dry chemical

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5
Q

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

A

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

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6
Q

When oxygen is being used the cylinder valve should be open

A

Fully

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7
Q

The maximum safe working pressure for acetylene is?

A

15psi

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8
Q

What does the term draw limit mean?

A

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

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9
Q

Fusible plugs in acetylene cylinders are located?

A

On the shoulder and bottom of the cylinder

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10
Q

The acetylene cylinder must be used

A

In a vertical position

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11
Q

What color is the acetylene hose used with oxyacetylene equipment?

A

Red

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12
Q

Testing for leaks on Oxsee acetylene equipment should be done with

A

Leak detection fluid

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13
Q

The function of a regulator in oxyacetylene equipment is ?

A

Reduce cylinder pressure to working pressure

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14
Q

what type of thread is an acetylene bottle

A

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

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15
Q

What type of threads is on an oxygen bottle

A

Right hand threaded

16
Q

What is the melting temperature of fusible plugs

A

Approximately 212°F or 100°C

17
Q

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

A

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

18
Q

What is the critical point of acetylene

A

28 psi pressure at 70 Fahrenheit or 21°C

19
Q

What are the properties of acetylene

A

Acetylene gas is colorless but has a strong pungent odor

20
Q

What is the chemical symbol for acetylene

A

C2h2

21
Q

What is acetylene pressure never used over

A

15psi

22
Q

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

A

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