The lifespan of HDPE water tanks is largely dependent on the type of chemical stored in it. Strong acids, caustic substances, and those that cause stress cracking can adversely affect the material. However, containers designed for specific chemical use, as well as those with appropriate resin types and design, are better able to withstand the effects of these chemicals, thus prolonging their lifespan.
HDPE water tanks need to be properly ventilated to prevent overpressure or vacuum-induced dilution. It is recommended that the size of the vent be at least one and a half times the size of the inlet or outlet to avoid tank failure. In addition, tanks should be designed to accommodate physical movement due to temperature changes and filling and emptying cycles. Flexible connections and proper support for process pipelines are needed for preventing excessive loading and potential failure.