To which code are heating boilers built?

Heating boilers are typically constructed according to ASME Section IV of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. This section specifically addresses the design, fabrication, inspection, testing, and certification of heating boilers.

ASME Section IV sets standards for the safe operation of lower-pressure heating boilers that operate at a maximum allowable working pressure (MAWP) of 15 psi. This code ensures that the boilers meet the necessary safety and performance criteria, which is essential for protecting both the equipment and its users.

The other sections of the ASME code deal with different types of boilers and pressure vessels: Section I focuses on power boilers used for high-pressure applications, Section III pertains to nuclear components and systems, and Section VII covers various non-specific industrial applications. Since heating boilers fall under a more specialized category regarding lower pressure operations, Section IV is the correct reference for their construction and compliance standards.