Which of the following methods applies to joints in fuel gas piping?

Fuel gas piping is critical in ensuring safe and efficient transport of gas for various applications. When considering the types of joints used in fuel gas piping, certain methods are recognized for their suitability and safety.

Welding is a common method used for joints in fuel gas piping as it creates a permanent and robust connection between pipes. It is essential that proper welding techniques and materials are employed to maintain integrity and avoid leaks, which can pose safety hazards.

Flanged joints are also applicable in fuel gas piping. Flanged connections allow for ease of assembly and disassembly, enabling maintenance or replacement of sections without significant effort. This is particularly important in systems where access may be necessary for inspections or repairs.

The answer also notes that only welded and flanged methods are relevant for fuel gas piping, thus excluding options that might suggest other joint methods that do not meet safety standards for this application. This specificity helps ensure the integrity and safety of gas delivery systems.