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FPE has extensive experience of engineering, design and building fire protection systems and equipment for the oil and gas industry. Services include engineering support, hydraulic calculations, turnkey upgrading, commissioning, training of personnel, system check, troubleshooting and repair Our personnel have been working within the supplier industry with fire protection systems for many years and have been involved in most of the existing platforms and installations in Norway. In addition, our personnel has been responsible for major projects in Canada, UK, China, etc. DELUGE SYSTEMS - FIRE FIGHTING SYSTEM ON AN OFFSHORE INSTALLATION Deluge systems are named from the 'deluge' of water they provide when activated. The most basic deluge system consists of only three parts: deluge control valve, distribution pipework and deluge nozzles. Deluge Systems are normally considered the main fire fighting system on an offshore installation and two very important forms of protection are provided - fire (flame) extinguishment and cooling. FOAMING AGENTS - AGAINST HYDROCARBON POOL FIRES Foaming agents can be added to the water, such as AFFF (Aqueous Film Forming Foam), which is very effective against hydrocarbon (oil, gasoline, etc) pool fires. Cooling is used to protect structural members and equipment from heat radiation, due to an ongoing fire, so that major damages and fire propagation is avoided. The deluge nozzles are evenly spaced above the floor area they protect (i.e. total flooding) and are fitted to the distribution pipework (grid), which in turn is fed from the fire mains via the deluge control valve. Alternatively the nozzles may be positioned around specific equipment, such as transformers, pressure vessels or valves / flanges, to provide dedicated protection. DELUGE CONTROL VALVE The Inbal deluge valve has a three-layer rubber sleeve, the only valve on the market to have that feature, incorporating a kevlar / nylon reinforcement sleeve. The Inbal valve is much more resistant to severe surge pressures than any other deluge control valve on the market, including other rubber sleeve valves. Pressures up to and exceeding 50bar (for a 6in valve) has routinely been mastered without any defects. The Inbal valve is constantly being developed and random sample valves, out of each production series, is tested extensively for wear and mechanical failure. The valve is, for instance, run through 10,000 opening and closing cycles, which has to be completed without any sign of leakage or malfunction. In extreme cases sample valves has performed more than 18,0000 such cycles, with 100% satisfactory function. The Inbal valve has no moving mechanical parts, and maintenance is therefore kept at an absolute minimum. ACTIVE PRESSURE PULSE COMPENSATOR The Active Pressure Pulse Compensator (APPC) senses the sudden decrease in water pressure and immediately starts to inject air into the upper part of the firewater piping system, at a pre-defined pressure (normally 1bar - 2bar). This will prevent the formation of vacuum and when the system pressure increases (i.e. the FP delivers more water than what is consumed), the air cushion established by the APPC will prevent water hammer in the firewater piping system.