FIRE SUPPRESION SYSTEM NFPA DESIGN SPESIFICATION HIGHEST RISK CLASSIFICATION -Risk Group A/B ROOF DENSITY - 12.2mm/min over 270sqm - Based on for Group A/B - K 11.5, 20mm (k8.0) Sprinkler Heads - Foam sprinkler system - AFFF - AR 3% Foam Additive - 1900 L/min Hose Stream Allowance to added CEILING & IN-RACK/SHELF PROTECTION - Group A/B - 3m max Horizontally spaced - 1 Row in flue space-In-Rack Protection - 1 Level over 2nd Tier - Starting Flow - 114 L/min (based on a K8 (K5.6) with starting pressure of 200kPa - 1 X Rack: 6 Sprinklers on 3 Tier Levels = 18 Heads in Opperation PUMP REQUIRED - 1 X NFPA 2500 GPM Diesel Pump - 1 X NFPA 2500 GPM Electric Pump DESIGN RESULT ROOF SPRINKLERS OVER IN RACKS - The ceiling sprinklers should be placed with a maximum head spacing of 9.3sqm per sprinkler. The maximum spacing between sprinklers should be at least 1.8m - K 11.5 / 20mm Upright Spray HYDRAULIC RESULT - AREA: 3920 sqm - SPRINKLERS: 550 in roof / ceiling - AVG SPACING: 7.127 sqm - MAXIMUM: 8.89 sqm - Sprinklers in opperation: 270/7.127 = 38 heads in operation - Starting flow / sprinkler : 12.2 x 8.89 sqm = 108.5 L/min - Remote: 9717 L-MIN @ 479 kPa w/hose stream TANK CAPACITY - Based on Workshop Demand x 120min - 9717 x 120min = 584 cubic meters effective capacity/tank - Circular Steel Tank : Total Volume - 600 Cubic Meter / tank x 2