OFC Module Review

Which of the following is NOT used as a fuel gas in OFC?

• Propane

• Propelyne

• Acetylene

• Ethylene

• Natural Gas

Acetylene is extremely unstable at pressure over ___ psi.

• 8

• 15

• 25

• 5

The chemical used to stabilize acetylene is ___.

• Acetaminophen

• Ethylene glycol

• Acetone

• Methane

• Ethane

The oxygen in OFC actuallly causes the ___ in molten steel to burn.

• Chromium

• Iron oxide

• Austenite

• Ferrite

• Vanadium

The working pressure of oxygen in OFC is generally anywhere between ___ psi.

• 1-5

• 1-50

• 200-350

• 50-75

• 100-150

Oxy-fuel hoses are color-coded; oxygen hoses are ___, while fuel gas hoses are ___.

• Red/Green

• Red/Grey

• Yellow/Green

• Green/Red

• Grey/Red

The most widely used fuel gas is ___.

• Propane

• Acetylene

• Propelyne

• Ethelyne

• Natural Gas

There are two grades of hose for fuel gases. ___ is suitable for any fuel gas: acetylene, propane,
propylene and natural gas. ___ is suitable for use with oxygen-acetylene only.

• B-Grade/A-Grade

• F-Grade/A-Grade

• T-Grade/R-Grade

• A-Grade/F-Grade

• R-Grade/T-Grade

Which of the following safety issues should be considered when oxyfuel cutting?

• Fumes

• Light Radiation

• Explosions

• Fires

• All of the Listed