Propane Certification Propane Certification Regulations and Compliance 3

Question 1

A propane system installed on new construction must be inspected and approved by whom before being placed in service?

Accepted Answer

A qualified authority having jurisdiction (AHJ)

Answer

NFPA 58 and local codes require approval from the authority having jurisdiction (AHJ), typically the local building or fire inspector, before a new system is placed in service.

Question 2

Which pipe material is prohibited for use in propane gas piping systems inside buildings per NFPA 54?

Accepted Answer

Aluminum pipe

Answer

Aluminum pipe is prohibited inside buildings for propane gas piping under NFPA 54 because it can be subject to corrosion and mechanical damage.

Question 3

Under NFPA 58, what is required before installing an LP-gas system in a building with an existing gas appliance?

Accepted Answer

A load calculation to ensure adequate supply capacity

Answer

A load calculation must be performed to confirm the system can supply adequate gas pressure and volume to all existing and new appliances simultaneously.

Question 4

Propane containers must be positioned so that the pressure relief valve is in contact with which phase of propane?

Accepted Answer

Vapor phase

Answer

Relief valves must communicate with the vapor space so they can vent gas rather than liquid, which could create a greater hazard.

Question 5

Which NFPA standard specifically addresses propane-fueled vehicles and vehicle fueling systems?

Accepted Answer

NFPA 58

Answer

NFPA 58 covers LP-gas including vehicle fuel systems, making it the applicable standard for propane autogas and vehicle fueling installations.

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Propane Certification Propane Certification Regulations and Compliance 3