How frequently must dry chemical cylinders be hydrostatically tested?

The correct interval for hydrostatic testing of dry chemical cylinders is every five years. This testing is essential for ensuring the integrity and safety of the cylinders, which hold pressurized chemicals. By performing hydrostatic tests at this interval, any potential weaknesses or degradation in the cylinder's material can be identified, ensuring that the cylinders remain safe for use.

The five-year interval is established by standards such as those set by the National Fire Protection Association (NFPA) and the Department of Transportation (DOT). Testing involves filling the cylinder with water and subjecting it to pressure to check for leaks, bulging, or any other kind of failure that could compromise the cylinder's structural integrity.

This regular maintenance is crucial for preventing accidents and ensuring that dry chemical suppression systems are operational when needed. Ensuring that these cylinders are hydrostatically tested at five-year intervals helps to maintain compliance with safety standards and protects both personnel and property from fire hazards.