Cutting Chapter 2

Question 1

Welding boots should be what?

Answer 1

8” or taller high-top shoes or boots

Question 2

Make sure your boots what?

Answer 2

The tongue and lace area of the footwear will be covered by a pant leg.

Question 3

Before cutting containers such as tanks or barrels, check to see what?

Answer 3

If they have contained any explosive, hazardous, or flammable materials.

Question 4

Example containers can have?

Answer 4

Petroleum Products
Citrus Products
Chemicals that decompose into toxic fumes when heated.

Question 5

For long-term cutting of such materials, always wear…

Answer 5

approved full face, supplied-air respirator (SAR) that using breathing air supplied externally of the work area.

Question 6

Oxygen (O2) is

Answer 6

a colorless, odorless, tasteless gas that supports combustion.

Question 7

Combined with burning material, pure oxygen causes

Answer 7

a fire to flare and burn out of control.

Question 8

The cylinders must be tested every

Answer 8

10 years

Question 9

When combined with Oxygen, Acetylene create a flame that burns

Answer 9

hotter than 5,500F

Question 10

Oxygen, Acetylene

Answer 10

is one of the hottest flames.

Question 11

Acetylene cylinders have what

Answer 11

safety plugs in the top and bottom of the cylinder

Question 12

Melting point of cylinder safety plugs melt at

Answer 12

212 F

Question 13

In the event of a fire, the fuse plugs will

Answer 13

release the acetylene gas, preventing the cylinder from exploding.

Question 14

A Dow Chemical Company product that is a chemical combination of acetylene and propane gases.

Answer 14

MAPP

Question 15

Hydrocarbon-based gases that are stable and shock-resistant, making them relatively safe to use.

Answer 15

Propylene Mixtures

Question 16

Acetylene

Answer 16

More than 5,500 F

Question 17

Propylene

Answer 17

5,130 F

Question 18

If high volumes of gas are removed from a liquefied fuel gas cylinder,

Answer 18

the pressure drops, and the temperature of the cylinder will also drop.

Question 19

Oxygen regulators differ from

Answer 19

fuel gas regulators.

Question 20

Fuel Gas regulators may have

Answer 20

red markings and usually have left-hand threads on all the connections.

Question 21

As a reminder that the regulator has left hand threads,

Answer 21

a V-notch may be cut around the nut.

Question 22

The fuel gas regulator’s high-pressure gauge usually reads up to?

Answer 22

usually reads up to 400 psi.

Question 23

Hoses transport gases from..

Answer 23

the regulators to the torch.

Question 24

Oxygen hoses are usually what

Answer 24

green with right hand threaded connections.

Question 25

Hoses for fuel gas are usually

Answer 25

red and have left-hand threaded connections.

Question 26

The fuel gas connections may also be

Answer 26

grooved as a reminder that they have left-handed threads.

Question 27

The combination torch consists of a cutting torch attachment that..

Answer 27

fits onto a welding torch handle.

Question 28

Combination torches are normally used in

Answer 28

light-duty or medium duty applications.

Question 29

On combination torches, fuel gas and oxygen valves are on

Answer 29

the torch handle.

Question 30

The cutting attachment on a combination torch has a

Answer 30

cutting oxygen level and another oxygen valve to contol the preheat flame.

Question 31

Rivet cutting tips are used ti

Answer 31

cut off rivet heads, bolt heads and nuts.

Question 32

When does equipment have to be tested for leaks immediately

Answer 32

after it is set up and periodically thereafter.

Question 33

The torch should be checked for leaks

Answer 33

each time before use.

Question 34

Could cause a fire or explosion if undetected.

Answer 34

Leaks

Question 35

A flame has a white feather created by excess fuel.

Answer 35

A carburizing flame.

Question 36

The length of the feather depends on the amount of excess....

Answer 36

fuel resent in the flame.

Question 37

When a cutting job is completed, and the oxyfuel equipment is no longer needed,

Answer 37

It must be shut down.

Question 38

Thin steel is

Answer 38

(3/16) " thick or less.

Question 39

A major concern when cutting thin steel is

Answer 39

distortion caused by the heat of the torch and the cutting process.

Question 40

To minimize distortion when cutting thin steel.

Answer 40

move as quickly as you can without losing the cut.

Question 41

Is the process of cutting a groove into a surface.

Answer 41

Gouging.

Question 42

Are basic guidance systems driven by a variable speed electric motor to enable the operator to cut or bevel straight lines at any desired speed.

Answer 42

Machine oxyfuel gas cutters or track burners

Question 43

Has an excess of oxygen.

Answer 43

Oxidizing flame.

Question 44

Oxyfuel flame types

Answer 44

Neutral Carburizing Oxidizing