What is the purpose of a hydrostatic test on a boiler?

The purpose of a hydrostatic test on a boiler is to identify leaks in the system. During this test, water is used to fill the boiler and the system is pressurized to a level higher than its normal operating pressure. By monitoring for any drops in pressure or visible leaks, inspectors can determine the integrity of the boiler and piping. This process is crucial for ensuring the safety and reliability of the boiler before it is put into operation.

The other options involve different aspects of boiler operation or maintenance. The test does not measure thermal efficiency, which relates to how well the boiler converts fuel energy into useful heat. Balancing pressure levels involves the operational setup of the boiler system rather than identifying potential leaking issues. Cleaning boiler tubes is performed as part of maintenance to enhance efficiency and performance but is unrelated to the purpose of a hydrostatic test.