What are the minimum and maximum temperature limits for performing a hydrostatic test?

The selected range of 70-120°F for performing a hydrostatic test is recognized as the appropriate temperature limit to ensure the efficiency and safety of the test. Hydrostatic testing involves filling the boiler with water and pressurizing it, and the water temperature greatly influences the physical properties of the materials involved.

Testing within this range ensures that the water remains in a liquid state, effectively allowing for accurate detection of leaks or weaknesses in the system. Additionally, within this temperature range, the materials of the boiler (such as steel) maintain sufficient strength and ductility to withstand the testing pressures without the risk of failure.

Temperature extremes, either too low or too high, can affect the viscosity of the water or the performance characteristics of the materials being tested, leading to inaccurate test results or potential damage. Thus, the range of 70-120°F is recognized as optimal for conducting hydrostatic tests safely and effectively.