ANNUAL FIRE SPRINKLER WET SYSTEM TEST AND INSPECTION. ANNUAL FIRE SPRINKLER 6" WALL PIV TEST AND INSPECTION. ANNUAL FIRE EXTINGUISHER TEST AND INSPECTION Sprinkler Inspection Annual Fire Sprinkler System Inspection - S/W Warehouse Deficiency: There is no evidence of five-year internal inspection check valve fire department connection and sprinkler alarm valve. Deficiency: There is no evidence of five-year internal obstruction investigation sprinkler system Deficiency: There is no evidence of five-year Hydro test fire department connection Deficiency: Sprinkler system is due for gauge change.