What is the scope of B31.3?

The scope of B31.3 relates specifically to process piping, which is defined as piping systems that transport fluids in chemical and industrial facilities. This standard provides guidelines for design, materials, fabrication, assembly, inspection, and testing of piping systems that are used in various processes involving liquids and gases.

B31.3 is crucial for ensuring safety, reliability, and performance in environments where chemicals are processed or transported, making it integral to industries such as petrochemicals, pharmaceuticals, and food processing. By focusing on process piping, B31.3 addresses the unique challenges and requirements of these applications, including factors like temperature, pressure, and the properties of the materials being transported.

In contrast, the other options relate to different types of piping systems and standards. Power piping, for instance, deals with piping systems designed for power plants and does not include the broader scope of process piping activities. Building service systems pertain to facilities management and services within buildings, and refined petroleum piping specifically addresses the transport of petroleum products, which is more narrowly defined compared to the comprehensive approach of process piping under B31.3.