Gas Piping Safety Regulations: Master the Rules for Safe Installations

Question 1

What is the primary purpose of a gas pressure regulator in a gas piping system?

Accepted Answer

To reduce gas pressure to a safe level for appliances

Answer

To increase gas pressure to provide adequate flow

Answer

To measure gas flow rate

Answer

To filter impurities from gas supply

Question 2

What is the purpose of purging in gas piping installations?

Accepted Answer

To remove air from the system before introducing gas

Answer

To reduce gas pressure

Answer

To clean the pipes of debris

Answer

To test for leaks

Question 3

What is the significance of pressure testing in gas piping systems?

Accepted Answer

To ensure leak-free connections

Answer

To verify proper gas flow

Answer

To calibrate gas pressure regulators

Answer

To test the strength of the piping

Question 4

According to NFPA 54, which material is NOT approved for use in gas piping installations?

Accepted Answer

Polyvinyl chloride (PVC)

Answer

Copper

Answer

Steel

Answer

Corrugated stainless steel tubing (CSST)

Question 5

Which fitting is specifically designed to connect pipes of different sizes?

Accepted Answer

Reducer

Answer

Elbow

Answer

Tee

Answer

Union

Question 6

What is the primary function of a gas pressure regulator?

Accepted Answer

To decrease gas pressure

Answer

To increase gas pressure

Answer

To measure gas pressure

Answer

To control the flow of gas

Question 7

What is the primary purpose of a gas meter?

Accepted Answer

To measure gas consumption

Answer

To regulate gas pressure

Answer

To prevent gas leaks

Answer

To provide gas to appliances

Question 8

According to NFPA 54, which of these is NOT a crucial requirement for gas piping installations?

Accepted Answer

Employing galvanized steel pipes for gas lines

Answer

Utilizing leak-proof piping and fittings

Answer

Securing pipes effectively to prevent movement

Answer

Installing appliances with adequate ventilation

Question 9

In natural gas distribution lines, which type of pipe is typically utilized?

Accepted Answer

Polyethylene

Answer

Copper

Answer

Polyvinyl chloride (PVC)

Answer

Cast iron

Question 10

What is the primary purpose of a gas pressure regulator in a gas piping system?

Accepted Answer

Reducing gas pressure to a safe level

Answer

Controlling the flow of gas

Answer

Preventing gas leaks

Answer

Measuring gas consumption

Question 11

Which factor does NOT influence the sizing of a gas piping system?

Accepted Answer

Outdoor temperature

Answer

Gas flow rate

Answer

Pipe diameter

Answer

Appliance BTU rating

Question 12

What is the primary objective of gas piping safety regulations?

Accepted Answer

To prevent explosions and fires

Answer

To ensure efficient gas flow

Answer

To minimize environmental impact

Answer

To extend the lifespan of gas pipes

Question 13

Which of the following tasks falls outside the scope of responsibilities for a licensed gas fitter?

Accepted Answer

Performing electrical system work

Answer

Ensuring proper ventilation in areas with gas appliances

Answer

Educating homeowners on gas safety

Answer

Repairing faulty gas appliances

Question 14

What are the potential consequences of failing to comply with gas piping safety regulations and codes?

Accepted Answer

Severe accidents, including explosions and fires

Answer

Minor leaks and inefficiencies

Answer

Reduced installation costs

Question 15

When installing gas piping, what safety measure is crucial besides avoiding open flames near gas lines?

Accepted Answer

Ensuring proper ventilation in work areas

Answer

Using combustible materials for pipe insulation

Answer

Permitting smoking near gas lines

Answer

Ignoring grounding and bonding requirements

Question 16

According to NFPA 54, what is the maximum allowable leak rate for a gas piping system after pressure testing?

Accepted Answer

0.5 standard cubic feet per hour (scfh)

Answer

2.0 scfh

Answer

1.0 scfh

Answer

3.0 scfh

Question 17

Which type of gas pipe material is recommended for underground installations due to its superior corrosion resistance?

Accepted Answer

Polyethylene (PE)

Answer

Copper

Answer

Galvanized steel

Answer

Stainless steel

Question 18

As per gas piping safety regulations, what is the minimum depth at which gas piping should be buried underground?

Accepted Answer

18 inches

Answer

24 inches

Answer

12 inches

Answer

30 inches

Question 19

Which of the following is a crucial safety requirement for gas piping installed in concealed spaces, such as walls or ceilings?

Accepted Answer

Must be enclosed in a chase or conduit

Answer

Must be painted with a fire-retardant coating

Answer

Must be installed with a minimum distance of 2 feet from heat sources

Answer

Can be left exposed

Question 20

When installing horizontal gas piping, the proper method of support involves:

Accepted Answer

Hangers or clamps spaced no more than 10 feet apart

Answer

Adhesive straps

Answer

Wire ties

Question 21

What is the primary function of a gas pressure regulator in a piping system?

Accepted Answer

To maintain a consistent gas pressure

Answer

To increase gas flow capacity

Answer

To filter impurities from the gas

Answer

To detect and shut off gas flow in case of leaks

Question 22

What is the primary role of a gas meter in a gas piping system?

Accepted Answer

To measure the volume of gas consumed

Answer

To amplify gas flow

Answer

To regulate gas pressure

Answer

To detect leaks