Which code pertains to underground or submerged metallic piping systems?

The correct choice pertains to the code that specifically addresses the guidelines and requirements for underground or submerged metallic piping systems. This code is critical for ensuring the integrity and safety of such piping systems, which are often susceptible to corrosion. The relevant code outlines specifications for design, installation, maintenance, and inspection practices geared towards mitigating corrosion risks in environments where metallic piping is buried or submerged in liquids.

Understanding this code is essential for professionals working with these kinds of systems, as it ensures compliance with safety and environmental regulations while also promoting best practices in cathodic protection. This code also provides a framework for assessing the effectiveness of cathodic protection systems, which are vital for prolonging the lifespan of metallic assets in corrosive environments.