MCC-NH Gas Fitters Practice Exam

The appropriate operating pressure for a gas piping system inside a building is typically set at 5 PSIg, in accordance with maximum design standards for residential and commercial systems. This pressure is suitable for most appliances, ensuring efficient gas delivery while maintaining safety standards. A pressure of 5 PSIg strikes a balance between effective gas flow for appliances and minimizing the risk of leaks or hazardous conditions. It ensures that gas systems operate within acceptable limits, promoting safety and functionality without overwhelming the system or the appliances connected to it. Other pressure levels mentioned may not align with the standard practices for interior piping systems, which are designed to optimize performance while safeguarding against potential safety concerns.