Which code governs the rules for the construction of power boilers?

The construction of power boilers is governed by ASME Section I of the American Society of Mechanical Engineers' Boiler and Pressure Vessel Code. This section specifically outlines the standards for the design, materials, fabrication, and inspection of power boilers. It defines the requirements that must be adhered to in order to ensure the safe operation and reliability of these systems in various applications.

ASME Section I is essential for ensuring that the power boilers are constructed to withstand the pressures and temperatures they encounter during operation. The guidelines established in this section help in minimizing the risk of failure and accidents, thereby ensuring safety for both the operators and the public.

In contrast, ASME Section V deals with nondestructive testing methods; Section IV pertains to low-pressure boilers; and Section IX focuses on welding and brazing qualifications. Each of these sections addresses different aspects or types of boilers and pressure vessels, but they do not provide the comprehensive requirements for the construction of power boilers that are found in Section I.