Wet Chemical Systems

Monthly

Quarterly

Semi-annual 

Annual

Other 

NFPA 17A

Maintenance

5-3.1.1

At least semiannually, maintenance shall be conducted in accordance with the manufacturer’s listed installation and maintenance manual.

Container Test

5-5a.

The following parts of wet chemical extinguishing systems shall be subjected to a hydrostatic pressure test at intervals not exceeding 12 years: a. Wet Chemical Containers

Hose Test

5-5c.

The following parts of wet chemical extinguishing systems shall be subjected to a hydrostatic pressure test at intervals not exceeding 12 years: c. Hose Assemblies

Agent Replacement

5-5.2

Wet chemical agent removed from the containers prior to hydrostatic testing shall be discarded.