Red Seal Review Oxy-Fuel Gas Cutting

Front 1

On oxygen cylinder valve the pressure regulator connections the threads are

Back 1

*right-hand*

Front 2

On acetylene cylinder valves and pressure regulator connections the threads are

Back 2

*left-hand*

Front 3

Cracking the cylinder valve momentarily before connecting the pressure regulator helps to

Back 3

Blow Away foreign matter

Front 4

Before you attach the pressure regulator to the cylinders you must

Back 4

Crack the cylinder valves

Front 5

Valves on an oxygen cylinder should be opened

Back 5

All the way

Front 6

Before you open the cylinder valves the working pressure adjusting screw on the cylinder pressure regulator should be

Back 6

Screwed all the way out

Front 7

A flame that has too much acetylene is called an _____ flame

Back 7

carburizing

Front 8

When lighting an oxy fuel gas torch you should use a

Back 8

Flint lighter

Front 9

When cracking a cylinder valve you should

Back 9

Stand to the side of the valve Outlet

Front 10

Why should you open cylinder valve slowly

Back 10

To avoid damaging the cylinder pressure regulator

Front 11

You have pressurized an oxyfuel gas system and close the cylinder valves there is a leak in the system if the cylinder pressure regulator gauge

Back 11

Goes down

Front 12

Maximum safe working pressure for acetylene is

Back 12

15 psi

Front 13

To extinguish an oxy acetylene flame you should first

Back 13

Close the torch acetylene valve

Front 14

Why should you not fully open the acetylene cylinder valve

Back 14

So you can close the valve quickly in an emergency

Front 15

The gas hoses and pressure regulators are purged in order to

Back 15

Remove any foreign matter

Front 16

Which flame is the ideal one for oxyfuel gas cutting

Back 16

Neutral

Front 17

Empty oxygen cylinder should be stored

Back 17

Separately from Full cylinders

Front 18

Correct working pressure can be found

Back 18

On the equipment manufacturers cutting tip chart

Front 19

The colour of fuel gas acetylene hoses are

Back 19

*Red*

Front 20

The colour of oxygen gas hoses are

Back 20

*green*

Front 21

Which factor is important when determining the size of oxy fuel gas hose to be used

Back 21

Length of hose

Front 22

Oxygen fittings can be identified by

Back 22

*Right hand threads*

Front 23

What does a grooved nut on an oxy fuel gas fitting show

Back 23

Fuel gas use only

Front 24

Oxyfuel gas connectors are made of what material

Back 24

Brass alloy

Front 25

To repair severed oxyfuel gas hoses you should use

Back 25

a ferrule-crimping tool

Front 26

New oxyfuel gas hoses before being used should be

Back 26

Blown out with compressed air

Front 27

Cutting thick material with a large tip you might have to

Back 27

Use a large-diameter hose

Front 28

Oxygen and Fuel Gas hose connectors are identical

Back 28

False

Front 29

What is the main function of a cylinder pressure regulator

Back 29

Reduce cylinder pressure and maintain consistent flow

Front 30

The gauge with the higher calibrations on cylinder pressure regulator shows the

Back 30

Cylinder pressure

Front 31

To increase the working pressure on an acetylene pressure regulator you would

Back 31

Turn the working pressure adjusting screw clockwise

Front 32

The gauge with the lower calibrations on a cylinder pressure regulator shows

Back 32

Working pressure

Front 33

Before you open a cylinder valve the working pressure adjusting screw on the cylinder pressure regulator should be

Back 33

Back out until tension is relieved

Front 34

Oxygen and acetylene pressure regulators are interchangeable

Back 34

False

Front 35

It is advisable to use a two-stage cylinder pressure regulator when

Back 35

Precise gas regulation is needed

Front 36

what type of cylinder pressure regulator is most widely used

Back 36

single-stage

Front 37

Which combination of gases is most preferred for fuel cutting of low carbon steel

Back 37

Acetylene and oxygen

Front 38

The name of the liquid used to stabilize acetylene in an acetylene cylinder

Back 38

Acetone

Front 39

Gas that produces the highest flame temperature when mixed with oxygen

Back 39

Acetylene

Front 40

Name one desirable characteristic of propane

Back 40

Easy and safe to handle

Front 41

Which fuel gas needs the least amount of oxygen to produce a neutral Flame

Back 41

Acetylene

Front 42

What is one advantage of acetylene has over other fuel gases

Back 42

High flame temperature

Front 43

Acetylene can be identified by its

Back 43

Pungent odour

Front 44

Which field gas uses the most oxygen to produce a neutral Flame

Back 44

Propane

Front 45

What is the maximum working pressure for acetylene gas at or below 21°C

Back 45

15 psi

Front 46

What type of fittings must never be used on an acetylene system

Back 46

copper

Front 47

Which fuel gas is the most stable and the safest

Back 47

mapp gas

Front 48

Propane gas is supplied in what form

Back 48

Liquid form

Front 49

The major component of air is

Back 49

Nitrogen

Front 50

What is a safety device on acetylene cylinders

Back 50

Fusible plugs

Front 51

At what pressure is oxygen stored in T-Type cylinders @ 21°C

Back 51

18 MPa

Front 52

What happens to the pressure inside an oxy fuel gas cylinder as the temperature increases

Back 52

Pressure increases

Front 53

Safety device on an oxygen cylinder is located on the

Back 53

Cylinder valve assembly

Front 54

Cryogenic containers of liquid oxygen are preferred over high-pressure cylinders containing oxygen gas because

Back 54

They are more economical to use then high-pressure cylinders

Front 55

Safety devices on cryogenic containers are

Back 55

Pressure relief valves

Front 56

How many turns should you use to open an acetylene valve

Back 56

1 1/2 turns

Front 57

Why should acetylene cylinders never be completely emptied

Back 57

Acetone would be drawn into the pressure regulator

Front 58

Acetone cylinders are filled with

Back 58

Acetone and a porous material

Front 59

When you operate liquid fuel gas cylinders they should be

Back 59

In an upright position

Front 60

Manuel oxyfuel gas cutting guides are used to ensure

Back 60

Accurate cuts

Front 61

A circle cutting guide is usually attached to the

Back 61

Cutting torch tip

Front 62

What kind of shapes are temp plates generally used to cut

Back 62

Irregular shapes

Front 63

One advantage of oxyfuel gas cutting machines over manual cutting

Back 63

Speed of cut can be accurately controlled

Front 64

A straight line cutting machine can be used to cut a circle

Back 64

True

Front 65

How many torches do shape cutting machines usually have

Back 65

Could be any number

Front 66

On what type of oxyfuel gas cutting machine is a magnetic Tracer use

Back 66

Shape cutting

Front 67

Oxyfuel gas pipe beveling machines are used to bevel pipe and to

Back 67

Cut pipe to size

Front 68

What is the main purpose of an oxygen or fuel gas manifold system

Back 68

Deliver large volumes of gas

Front 69

Where is an oxygen manifold system usually located

Back 69

In a special room outside the welding shop

Front 70

Stationary manifold systems are commonly used

Back 70

in large welding shops and trade training institutions

Front 71

What does the term duplex mean when referring to a manifold system

Back 71

It has two banks that can operate independently

Front 72

Identify the safety device found on acetylene manifold systems

Back 72

Reverse flow check valves (RFCVs)

Front 73

A low-pressure station regulator is usually easily identifiable because it

Back 73

Only has a working pressure gauge

Front 74

What was traditionally used to connect oxygen cylinders to a manifold system

Back 74

Coiled copper alloy tubing

Front 75

Acetylene manifold systems must be equipped with

Back 75

A hydraulic flashback arrestor

Front 76

Non-ferrous Alloys are difficult to cut because they contain

Back 76

Little or no iron

Front 77

Oxyfuel gas easily cuts

Back 77

Low carbon steel

Front 78

The protective oxide Shield is formed when you cut cast iron or alloy steels because the

Back 78

Oxide has a higher melting temperature than the base metal

Front 79

Cast iron can be more easily cut with the oxyfuel gas process if it is

Back 79

Preheated

Front 80

To make cutting cast iron easier you can

Back 80

Use a waster plate

Front 81

A ferrous alloy is one that contains

Back 81

iron

Front 82

Certain ferrous alloys are hard to cut because they produce a _____ on the surface of the metal

Back 82

Protective oxide

Front 83

A waster plate helps when cutting certain ferrous alloys by

Back 83

Diluting the base metal slag with iron

Front 84

Chemical flux cutting is especially useful for cutting

Back 84

Stainless steel

Front 85

Metal powder cutting is a process where a powder containing _____ is injected into the cut area

Back 85

Iron

Front 86

Aluminum cannot be cut with oxyfuel gas because it

Back 86

It does not contain the iron necessary for oxidation

Front 87

The cutting tip size is determined by the

Back 87

Thickness of the metal it will cut

Front 88

What is the purpose of a reverse flow check valve

Back 88

Control the direction of gas flow

Front 89

What is the purpose of a flashback arrestor

Back 89

Stop the flame burning back in the hose and prevents reverse flow of gases

Front 90

The single large Center orifice of a fuel gas cutting tip is used for what gas

Back 90

Cutting oxygen

Front 91

The torch that is designed to be used for either cutting or welding by changing the tip attachments

Back 91

Two-piece torch

Front 92

The smaller holes in a cutting tip are called

Back 92

Preheat flame holes

Front 93

Propane gas requires what kind of cutting tip

Back 93

A specially designed tip

Front 94

A rosebud tip is used for

Back 94

Heating metals

Front 95

Injector type torches are designed for use with

Back 95

Fuel gasses supplied at low pressure

Front 96

A combination cutting torch attachment can be used for

Back 96

Cutting only

Front 97

Cutting tips can be used interchangeably with torches from different manufacturers

Back 97

False

Front 98

Back 98

blast furnace

Front 99

Back 99

open hearth furnace

Front 100

Back 100

basic oxygen furnace

Front 101

Back 101

electric furnace

Front 102

Back 102

rimmed/semi-killed/killed

Front 103

Back 103

Grey cast iron/ white cast iron/ malleable cast iron/ nodular cast iron