Controls A D A pre-wired operating panel is installed at the end of the tank on the support frame, at which are grouped all controls and C B 500 overload relays for the cooling units, tank pressure, level Length (air cooled +145) indicato11r0s0, and various indicators and warning lamps. The panel is completely watertight and fitted with cable glands. D C B 500 Length (air cooled +145) 1100 TANK TANK TANK TANK Ø1800 Ø1900 Ø2200 Ø2400 A 2600 mm 2800 mm 3000 mm 3200 mm B 2415 mm 2460 mm 2805 mm 3000 mm C 1025 mm 1080 mm 1225 mm 1340 mm D 2270 mm 2420 mm 2695 mm 2900 mm Example of tank sizes Metres Length excl. air cooling Tank dia. Ø1800 Tank dia. Ø2200 14 12 10 8 6 4 2 0 0 5 10 15 20 25 30 35 40 Max. CO₂ content in tons Weight empty Tank dia. Ø1800 Tank dia. Ø2200 14 12 10 8 6 4 2 0 0 5 10 15 20 25 30 35 40 Max. CO₂ content in tons Tons Valves and filling connections The automatically operated main valve and distribution valves are ball valves fitted with manual override. The valves are sized so that the appropriate quantity of carbon dioxide will be discharged in accordance with the class requirements. To prevent ice formation on the valves, the main outlet pipe from the tank is located at the top of the tank as a continuation of the tank dip tube. The tank is filled by a truck through twin filling and balancing lines led from the tank to deck level port and/or starboard. Isolation valves and hose connections are fitted to these lines. Release of carbon dioxide Remote release of the required quantity of gas to a particular space is done from the release cabinets located as required. The release system utilises the CO₂ pressure from the tank to actuate the main valve and the distribution valve via a pressure-controlled valve, and these valves are arranged for remote operation from the release cabinets. When the appropriate quantity of carbon dioxide has been discharged, the main valve is closed automatically. Distribution system The distribution valve is connected to a computer-calculated piping system within the protected space and to which the CO₂ nozzles are connected. The piping is dimensioned so that the required quantity of gas will be discharged within the prescribed time and at no point in the piping system will the pressure fall below 10 bar which would cause freezing at the nozzles. All designs and sizes are available on request. Quality assurance Danfoss HSE&Q system is in accordance with DS/EN ISO 9001:2015, DS/EN 14001:2015, and DS/OHSAS 18001:2008 and is certified by DNV-GL. Our ongoing internal training programs make our employees – naval architects, sales engineers, project managers, service engineers etc. – fully qualified to handle our fire fighting systems for the marine industry. An important element is the use of an approved computer program for hydraulic calculations, which secures a quick and precise system design. Danfoss Fire Safety A/S · SEM-SAFE®low-pressure CO₂ fire safety system 3
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