How does using a torque wrench benefit the assembly of boiler components?

Using a torque wrench is crucial in the assembly of boiler components because it ensures precision tightening. This tool is specifically designed to apply a specific amount of torque to a fastener, which is vital in achieving the correct tension required for various components within a boiler system. Properly tightened fasteners help maintain structural integrity, prevent leaks, and ensure safety under operating conditions.

When components are not tightened to the manufacturer's specifications, it can lead to a variety of issues, such as loosening over time, distortion of the components, or even catastrophic failure. Additionally, precision tightening helps to distribute load evenly across the assembly, which is particularly important in high-pressure environments like a boiler.

The other answer choices, while they may seem relevant, do not accurately capture the primary benefit of using a torque wrench in this context. For example, while it may occasionally lighten the load or speed up assembly, these are not the primary functions of a torque wrench. Similarly, preventing rust formation does not directly relate to the primary purpose of a torque wrench, as rust prevention is typically addressed through other means, such as coatings or environmental controls.