What temperature is best for boiler water when preparing for a hydrostatic test?

The optimal temperature for boiler water when preparing for a hydrostatic test is important to ensure accurate results and safety during the process. A water temperature of around 70°F is typically recommended as it minimizes the risk of thermal stress on the boiler components, which could occur if the water were either too cold or too hot.

At 70°F, the water's viscosity is low enough to ensure proper flow and filling of the boiler during the hydrostatic test, allowing for a thorough examination of the system for leaks and weaknesses. Additionally, this temperature is safe for handling and does not pose significant risk to personnel involved in the testing.

In contrast, if the temperature were to be significantly lower or higher, it might lead to complications such as expanded metal resulting from thermal effects or increased safety risks from handling water that is too cold or too hot. Thus, maintaining the water temperature around 70°F is ideal for performing a hydrostatic test effectively and safely.