12yr Hydrostatic Test Past Due: (1) ProTexII L4600 Tank (2011 Manufacture Date) During your most recent Fire Protection Inspection, our technicians noted that one or more of your Fire Suppression Tanks are due for a hydrostatic test per: NFPA 17A: 7.5.1 The following parts of wet chemical extinguishing systems shall be subjected to hydrostatic pressure testing at intervals not exceeding 12 years: Wet Chemical Containers Auxiliary Pressure Containers Hose Assemblies Fire Suppression Tanks are required to be pressure tested using water or some other non-compressible fluid to help prevent unwanted failure or rupture of the cylinder. NFPA 17A also requires the replacement of the cartridge used to expel suppression chemical hoses, o-rings, and burst discs. Appliance Line-Up & Duct Nozzle Coverage - Deficiency - System Re-Pipe & Nozzles Needed, Detector Needs Properly Centered Under Duct During the semi-annual kitchen fire suppression inspection, the technician identified insufficient noz