American Society of Mechanical Engineers (ASME) Practice Exam 2025 - Free ASME Practice Questions and Study Guide

The components that are considered part of the boiler proper include superheaters, economizers, and pressure parts. These components are integral to the function of the boiler itself.

Superheaters serve to increase the temperature of the steam produced by the boiler, enhancing the efficiency of steam generation by providing additional heat after the initial steam generation. Economizers reduce energy losses by preheating the feedwater before it enters the boiler, thereby improving thermal efficiency. Pressure parts refer to the components that are designed to withstand the high pressures and temperatures within a boiler while ensuring safe and efficient operation.

In contrast, the other options encompass auxiliary systems and components that support the operation of the boiler but are not part of the boiler proper itself. For instance, boiler valves and pumps are part of the operational system and help in controlling flow and pressure; control systems and safety devices are crucial for monitoring and ensuring safe operations; feedwater systems and blowdown tanks are essential for maintaining water quality and managing waste, but again, they do not constitute the boiler proper.