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Fuel Supply Systems — ICC M1 Practice Questions

18 questions · 15% of the ICC M1 exam

Worked questions

1. A fuel gas piping system is being installed in a residential building. Which of the following is a requirement for the installation of fuel gas piping in accordance with the 2024 International Residential Code?

  • APiping must be installed at least 18 inches above the finished floor.
  • BPiping must be installed in a concealed location if it is not accessible for inspection.
  • Piping must be installed with a slope of at least 1/4 inch per foot to facilitate drainage.
  • DPiping must be installed with a minimum wall thickness of 0.062 inches.

Exam tip

Always check the specific code section for the correct requirements when dealing with fuel gas piping.

Why C is correct

The correct answer is that piping must be installed with a slope of at least 1/4 inch per foot to facilitate drainage. This is in accordance with Section M1503.3.1 of the 2024 IRC. Options A, B, and D are incorrect as they do not reflect the correct code requirements.

2. A new residential building is being constructed. According to the 2024 International Residential Code, what type of safety device is required at the outlet of each natural gas piping system?

  • APilot light
  • BCombustible gas detector
  • Shut-off valve
  • DPressure regulator

Exam tip

Safety devices are crucial for preventing gas leaks and ensuring the safe operation of fuel gas systems.

Why C is correct

The 2024 International Residential Code, Section M1903.1 requires a shut-off valve at the outlet of each natural gas piping system. Options A, B, and D are incorrect as they are not the required safety devices.

3. An inspector is checking the installation of a new fuel gas appliance. Which of the following is a requirement for the installation of a fuel gas appliance in accordance with the 2024 International Residential Code?

  • AThe appliance must be installed at least 18 inches from the nearest wall.
  • The appliance must be installed with a clear space of at least 12 inches around it.
  • CThe appliance must be installed with a clear space of at least 6 inches around it.
  • DThe appliance must be installed with a clear space of at least 24 inches around it.

Exam tip

Always verify the specific code requirements for the installation distances of fuel gas appliances.

Why B is correct

The correct answer is that the appliance must be installed with a clear space of at least 12 inches around it. This is in accordance with Section M1505.1 of the 2024 IRC. Options A, C, and D do not reflect the correct code requirements.

4. An inspector is reviewing the maintenance of a fuel gas piping system. Which of the following is a requirement for the maintenance of fuel gas piping systems in accordance with the 2024 International Residential Code?

  • Piping must be inspected annually for leaks and corrosion.
  • BPiping must be inspected every 5 years for leaks and corrosion.
  • CPiping must be inspected every 10 years for leaks and corrosion.
  • DPiping must be inspected every 15 years for leaks and corrosion.

Exam tip

Regular maintenance and inspection are crucial for the safe operation of fuel gas piping systems.

Why A is correct

The correct answer is that piping must be inspected annually for leaks and corrosion. This is in accordance with Section M1509.1 of the 2024 IRC. Options B, C, and D do not reflect the correct code requirements.

5. Which of the following is a requirement for the installation of a fuel gas meter in accordance with the 2024 International Residential Code?

  • AThe meter must be installed in a locked cabinet.
  • The meter must be installed in a readily accessible location.
  • CThe meter must be installed in a weatherproof location.
  • DThe meter must be installed in a location that is visible from the street.

Exam tip

Ensure that fuel gas meters are installed in locations that are easily accessible for maintenance and inspection.

Why B is correct

The correct answer is that the meter must be installed in a readily accessible location. This is in accordance with Section M1506.1 of the 2024 IRC. Options A, C, and D are not specific requirements for the installation of a fuel gas meter.

13 more in the bank

Answers and explanations for these are in the app.

  • A fuel gas piping system is being installed in a new residential building. During the inspection, the inspector notices that the piping is made of black steel. What is the minimum wall thickness required for the steel piping according to the 2024 International Residential Code, Section M1801.1?
  • A fuel gas piping system is being installed in a residential building. The installer has used black iron pipe for the distribution piping. What is the minimum thickness required for the black iron pipe, according to the 2024 International Residential Code?
  • A new residential building is being constructed. The installer plans to install a natural gas water heater. According to the 2024 International Residential Code, what is the minimum clearances required between the water heater and combustible materials?
  • A residential building is being constructed. The installer is planning to install a fuel gas system. According to the 2024 International Residential Code, what is the minimum required distance between the fuel gas piping and the foundation of the building?
  • An existing residential building has a gas stove that is not up to code. The installer proposes to replace the stove with a new one. According to the 2024 International Residential Code, what is the minimum clearance required between the new gas stove and a wall, if the wall is not a fire-rated wall?
  • An existing residential building is being retrofitted with a fuel gas system. According to the 2024 International Residential Code, what is the minimum required distance between a natural gas meter and a building entrance?
  • An existing residential building is being retrofitted with a fuel gas system. According to the 2024 International Residential Code, what is the minimum required distance between the fuel gas piping and a fuel gas appliance?
  • An inspector is conducting a routine inspection on an existing residential building that has recently undergone a fuel gas piping replacement. Which of the following is NOT a requirement for fuel gas piping installations according to the 2024 International Residential Code, Section M1803.1?
  • An inspector is reviewing an existing fuel gas piping system. Which of the following conditions would require immediate replacement of the piping?
  • An inspector is reviewing the installation of a fuel gas piping system. Which of the following is a requirement for the installation of a fuel gas shutoff valve?
  • During an inspection of an existing residential building, you notice that the fuel gas piping is made of galvanized steel. What is the maximum allowable wall thickness for this type of piping, according to the 2024 International Residential Code?
  • Which of the following is a requirement for the testing of fuel gas piping systems in accordance with the 2024 International Residential Code?
  • Which of the following is not a requirement for the venting of a fuel gas appliance?

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