Chapter 8 Practice Test Building Fuel
Gas Systems
Undiluted propane is ___ than air and has a flammable range between ___ percent. - Answer-heavier;
2.15 and 9.6
According to NFPA 58, the odorant that is added to LPG and natural gas must be detectable when the
fuel gas is at a concentration of not less than ___ of its lower explosive limit. - Answer-one-fifth
Which of the following is NOT an important standard or source that an investigator should understand
when dealing with fuel gas systems that are found in residences or commercial occupancies? - Answer-
29 CFR Part 311, EPA Standard for Natural Gas and Residential and Commercial Use
A fuel gas system to either a building or an appliance can do all of the following EXCEPT: - Answer-act as
the oxidizer for the incipient source
What is the name of the odorant added to natural gas? - Answer-Butyl mercaptan
Information and specifications for underground service lines for fuel gas are listed in: - Answer-NFPA 58
The process of the odorant being removed from the gas either by soil or being absorbed by the piping is
known as: - Answer-scrubbing.
According to NFPA 54, gas meters must be installed at least ___ from sources of ignition and they should
be protected from damage - Answer-3 feet (0.9 meters)
Gas Systems
Undiluted propane is ___ than air and has a flammable range between ___ percent. - Answer-heavier;
2.15 and 9.6
According to NFPA 58, the odorant that is added to LPG and natural gas must be detectable when the
fuel gas is at a concentration of not less than ___ of its lower explosive limit. - Answer-one-fifth
Which of the following is NOT an important standard or source that an investigator should understand
when dealing with fuel gas systems that are found in residences or commercial occupancies? - Answer-
29 CFR Part 311, EPA Standard for Natural Gas and Residential and Commercial Use
A fuel gas system to either a building or an appliance can do all of the following EXCEPT: - Answer-act as
the oxidizer for the incipient source
What is the name of the odorant added to natural gas? - Answer-Butyl mercaptan
Information and specifications for underground service lines for fuel gas are listed in: - Answer-NFPA 58
The process of the odorant being removed from the gas either by soil or being absorbed by the piping is
known as: - Answer-scrubbing.
According to NFPA 54, gas meters must be installed at least ___ from sources of ignition and they should
be protected from damage - Answer-3 feet (0.9 meters)
