Presentation on theme: "Marioff HI-FOG MAU Systems"— Presentation transcript:
1Marioff HI-FOG MAU Systems Marioff HI-FOG Training4 August 2008Amit Lior
2MAU is small also compared to other FM approved accumulator units What is MAU?Machinery-space Accumulator Unit (MAU) is the smallest Marioff HI-FOG system, developed to protect enclosures containing machinery equipment against fire.MAU is small also compared to other FM approved accumulator unitsMarioff HI-FOG MAU system is of a deluge type, releasing through open spray-heads when activated.MAU unit is actuated either manually or automatically.MAU is a self contained unit, requiring no supply of electric power or water for operationMarioff HI-FOG MAU was tested for both fire-righting ability and for component qualities to the satisfaction of FM (USA), VdS (Germany), TFRI (China) and VNIIPO (Russia).
3Applicable StandardsNFPA 750 Standard on Water Mist Fire Protection SystemsFM Approval Standard Class 5560VdS draft StandardIMO
4Applications Machinery Space: oil pumps oil tanks fuel filters transformer vaultsgear boxesdrive shaftslubrication skidsdiesel engine driven generatorsother similar machinery using fuel and/or lubrication fluids with volatilities less than or equal to light diesel
5Applications Special Hazard Machinery Space: internal combustion engines, other equipment using fuel and/or lubrication fluids with volatilities less than or equal to Heptane.incidental use, or storage of limited quantities of flammable liquids of not more than two 55 gal (208 L) drums.
7Protected Enclosures General guidelines: Maximum enclosure height 5 m Maximum enclosure width and length 7,5 mMaximum enclosure volume 260 m3Also:All ventilation openings and\or forced ventilation arrangement shall be capable of automatic closure or shut-down prior to system discharge.
8Structure & Components Each MAU consists of:One (1) compressed gas cylinderOne, Two or Three (1 , 2 or 3) water cylindersActuator ValveRackMonitoring devices (pressure gauge etc’.)
9Structure & Components Standard MAU sizes:MAU-50 1 50 L water + 1 20 L compressed gasMAU 50 L water + 1 50 L compressed gasMAU 50 L water + 1 50 L compressed gas
10Structure & Components Gas cylindersPreferably provided by local supplier.Dimensions:Diameter: ca. 240 mmMaximum cylinder height: ca mmThread type: 24,32 1,814 SFS2292(adaptor applicable for several options)Each MAU has a single compressed gas cylinder:MAU-50: 20 LitreMAU-100 \ MAU-150: 50 Litre (minimum nominal capacity 48 Litre)Compressed gas may be either air or nitrogen. Applicable pressure ofcompressed gas should be one of the following:150 15C200 bar 15C250 15C
11Structure & Components Water cylindersNominal capacity of 50 litres.Amount of water cylinders depend on the size of the accumulator unit.Type of water cylinder depends on the compressed gas pressure and the place in the MAU assembly.NOTE:Water cylinders can not change from one type of MAU to the other.Water cylinders can not be altered within each MAU.MAU set for one pressure can not use gas cylinders with other pressure.
25OperationExtended DischargeStandbyOpening the Actuation Valve
26Operation Extended Discharge Standby Opening the Actuation Valve
27Operation Extended Discharge Standby Opening the Actuation Valve
28Operation Extended Discharge Standby Opening the Actuation Valve
29Spray-Heads4S 1MC 8MB 1100Spray-heads are installed in one of the following orientations:At ceiling level, discharging downward.Wall mounted, discharging horizontally.
30Spray-Heads Amount of Spray-Heads: 65 m3 : one spray-head 130 m3 : two spray-heads260 m3 : four spray-headsNote: These numbers are the minimum, and more spray-head may be required if e.g.:in order to keep max. spacing limits between spray-heads in a long roomobstruction prevents the construction of economic and uniform gridthe amount of fire risks justifies more spray-heads for proper coverageFor 10 minutes discharge:MAU-50 : 1 spray-headMAU-100 : 2 spray-headsMAU-150 : 4 spray-heads
31Distribution NetworkNetwork for the release of one or two spray-heads:O/D 12 mm ( 1,2 mm wall thickness)Network for the release of three or more spray-heads:O/D 16 mm ( 1,5 mm wall thickness) from the accumulator unit to the first T-piece.O/D 12 mm ( 1,2 mm wall thickness) from the first T-piece thereafter.Maximum length of piping used for the construction of the network:20 m of O/D 12 mm pipes.10 m of O/D 16 mm pipes.
32Distribution Networksingle spray-head, typically installed at the centre of the ceilingtwo spray-heads, installed either at ceiling level or wall mountedfour spray-heads, installed either at ceiling level or discharging horizontally