What test should be done after mechanically cleaning boiler tubes?

After mechanically cleaning boiler tubes, conducting a hydrostatic test is essential for several reasons. This test involves filling the boiler with water and pressurizing it to check for leaks and ensure the structural integrity of the tubes and other components.

By performing a hydrostatic test, engineers can detect any weaknesses or defects that may not have been visible during the cleaning process. The test can help confirm that the boiler system can safely hold the required pressure during operation. This step is crucial to preventing potential failures that could lead to dangerous situations or equipment damage.

Hydrostatic testing is particularly effective as it provides a thorough assessment of the entire system’s integrity without the risks associated with pressurized gases used in a pneumatic test. Additionally, other tests listed, such as friction tests and heat resistance tests, do not serve the same purpose of validating leak-proof and safe operational conditions post-cleaning. Thus, the hydrostatic test is the most appropriate choice following the mechanical cleaning of boiler tubes.