What MAXIMUM operating pressure is regulated by the NFPA 54 National Fuel Gas Code?

The maximum operating pressure regulated by the NFPA 54 National Fuel Gas Code is set at 125 psig. This standard ensures safe and reliable operation of gas piping systems and appliances within the jurisdictions that adopt the code. Setting a maximum pressure limit is crucial for preventing potential hazards such as leaks, fires, or explosions that can occur if the pressure exceeds safe levels.

The 125 psig limit is designed to be appropriate for most residential and commercial applications, allowing enough pressure to deliver adequate service while maintaining safety throughout the gas distribution system. This regulation helps ensure that installations comply with safety standards and practices, minimizing risks to both property and individuals.

Other pressure levels mentioned in the options (like 100 psig, 110 psig, and 150 psig) do not align with the established guidelines of the NFPA 54, making 125 psig the definitive maximum threshold for safe gas service pressure as defined by the code.