9289 unit 301 outcome 6

In site work involving fuel gases, what is the written permit system commonly called?

• Cold work

• Hot work

• Safe work

• Gas pass

Which statement best describes the purpose of a hot work permit?

• It certifies the worker's employment status.

• It details the type of work, how and when it will be carried out, and the precautions to be taken.

• It authorizes the purchase of gas equipment.

• It serves as a checklist for tool maintenance only.

Gas equipment should not be used unless you have received adequate training in which of the following? Select the single best option.

• Only tool selection

• Safe use of the equipment, required precautions, correct fire extinguisher types, and emergency procedures

• Accounting procedures for site costs

• Welding aesthetics

Which item is specifically included in emergency procedures training for using gas equipment on site?

• Calibrating pressure gauges

• Raising the fire alarm and calling the fire brigade

• Painting equipment to prevent rust

• Filing hot work permits with the finance department

Which bottled gas is typically supplied in a red cylinder with a left-hand thread?

• Propane

• Butane

• Methane

• Ammonia

Liquefied petroleum gas (LPG) includes which of the following gases?

• Propane and butane

• Methane and ethane

• Hydrogen and helium

• Oxygen and nitrogen

At approximately what temperature does propane turn from liquid to gas?

• 0°C

• 21°C

• 42°C

• 100°C

When LPG is burned in confined spaces, what harmful build-up can occur?

• Ozone (O3)

• Carbon dioxide (CO2)

• Sulfur dioxide (SO2)

• Nitrogen (N2)

Which statement correctly describes LPG compared to air?

• LPG is lighter than air and disperses upward

• LPG is heavier than air and can pool at low levels

• LPG has the same density as air

• LPG is non-flammable

What safety equipment must be present when LPG is in use?

• Foam fire extinguisher

• Water fire extinguisher

• CO2 fire extinguisher

• Dry powder fire extinguisher