What does the term "fuel gas" refer to in NFPA 54?

The term "fuel gas" in NFPA 54 refers to any gas fuel, which includes both natural gas and liquefied petroleum gas (LPG). This encompasses a range of gaseous fuels that are utilized for heating, cooking, and powering appliances. Understanding the definition of fuel gas is essential for ensuring that installations and usage comply with safety standards and regulations outlined in the code.

The inclusion of both natural gas and LPG under this term reflects the various types of gaseous fuels available in the market, which necessitates comprehensive guidelines for their safe handling and application. This broad definition helps to ensure that any aspect of gas installation and operation takes into account the characteristics and safety measures required for different types of fuel gases.