Which document provides rules for the construction and inspection of boilers and pressure vessels?

The correct answer is related to CSA B51, which is the definitive standard that provides the regulations for the construction and inspection of boilers and pressure vessels. This standard outlines the requirements and guidelines necessary to ensure safety, reliability, and efficiency in the design, fabrication, and operation of these critical components. The focus of CSA B51 is on ensuring that the pressure equipment complies with safety standards necessary to prevent hazardous situations, including explosions or failures that can arise from improper construction or maintenance.

By understanding the requirements outlined in CSA B51, engineers and technicians can work within a framework that prioritizes safety during all phases of a pressure vessel's lifecycle, from design through to inspection and ongoing maintenance. This document is vital for compliance with legal and industry standards, ensuring that all practices meet established norms to protect personnel and equipment.

The other standards mentioned, while they pertain to similar fields, such as refrigeration (CSA B52), do not specifically address the construction and inspection of boilers and pressure vessels as comprehensively as CSA B51 does. Therefore, they would not be suitable references for this specific question regarding boiler and vessel regulations.