FIRE SUPPRESSION SYSTEM
Engineered System
The Engineered concept of Orient 227® (HFC-227ea) Clean Agent System allows a range of flexibility in design parameters. Each application requires an individual flow calculation to determine the quantity of HFC-227ea clean agent required for a specific hazard volume and its set of pipes and fittings sizes. The area coverage of each nozzle can be calculated through the Orient Flow Calculation Software version OCI 4.00. Orient Engineered System has various sizes of the Orient 227® cylinder ranging from 35 lb, 70 lb, 150 lb, 250 lb, 375 lb, 560 lb and 1200 lb. These cylinders are super-pressurized with nitrogen to 360 psig at 70 °F and have the operating temperature ranging from 32 °F to 130 °F. Each cylinder is equipped with a suitable back pressure valve. The cylinders are manufactured, tested and stamped in accordance with DOT 4BW500 or DOT 4BA500. The systems are designed for Total Flooding Protection against Class A, Class B and Class C fires occurring within an enclosure. The Orient Engineered System is designed and installed in accordance with NFPA 2001 and to comply with the Orient’s Installation, Maintenance and Services Technical Manual (P/N: OCI-90225-D).
Pre-Engineered System
Orient Pre-Engineered Unit is Clean Agent System pre-set quantities of “Orient 227®” (HFC-227ea) agent and specific flow rates in a set of pipes, fittings, and nozzles for various hazards. Specifically, they are limited to types and sizes by Underwriters Laboratories based on the actual fire test conducted. Orient provides units ranging from 3 lb, 6 lb, 12 lb and 18 lb that are super-pressurized to 240 psig at 70 °F. The larger models are 35 lb, 70 lb, 140 lb, 240 lb, 360 lb and 520 lb in which the units are super-pressurized to 360 psig at 70 °F. Each cylinder is equipped with a suitable cylinder valve. All these units are designed for Total Flooding Protection against Class A, Class B and Class C fires occurring within an enclosure. The Orient Pre-Engineered System is designed and installed in accordance with Orient’s Installation, Maintenance, and Services Technical Manual (P/N: OCI-LP-SYS1-D).
Inert Gas 541 (IG-541)
Orient IG-541 suppression systems are based in the principle of reducing the oxygen concentration inside the protected hazard. The oxygen concentration is minimized by the application of IG-541 until it reaches a level where combustion is no longer supported. Each system is designed so as to decrease oxygen to a specific level. When discharged, Chemori IG-541 is quickly and uniformly distributed within the enclosure, achieving design concentration in 60 seconds.
Inert Gas 100 (IG-100)
Orient IG-100 is inert gas naturally present in the atmosphere, therefore its green-house effect is nil and its ozone layer depletion potential is zero. It is chemically inert, non-conductive, colourless, odourless and flavourless. Chemori IG-100 is non-corrosive and may be used at normal temperatures with such materials as nickel, steel, stainless steel, copper, brass, bronze and plastics.
Inert Gas 55 (IG-55)
This is a blend of 50% Argon & 50% Blend of Nitrogen. The fire suppression gas is blended to offer better buoyancy for the fire suppression agent keeping the fire suppression gas at higher levels in the protected enclosure for longer!
This type of fire suppression is considered a green option and does have many advantages used in the right application.
Carbon Dioxide System
Cylinders used for the CO2 system have the design pressure of 2,175 psi (150 bar) and test pressure of 3,625 psi (250 bar). The filling rate of the cylinder is never higher than 0.6 kg of CO2 for each liter of capacity of the cylinder. Each cylinder is equipped with brass valve containing a safety burst disc for protection against over pressurization due to elevated temperature and a dip tube (siphon tube). The cylinder is also equipped with a valve cap that is attached to the threaded neck ring for the valve protection in accordance with ISO 11117 standard.
Carbon Dioxide Fire Suppression Systems are recommended for protection of unoccupied spaces or local applications such as printing presses or commercial baking ovens.
