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Marioff HI-FOG GPU Systems for the protection of Industrial Applications Marioff HI-FOG Training 5 August 2008 Amit Lior.

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Presentation on theme: "Marioff HI-FOG GPU Systems for the protection of Industrial Applications Marioff HI-FOG Training 5 August 2008 Amit Lior."— Presentation transcript:

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2 Marioff HI-FOG GPU Systems for the protection of Industrial Applications Marioff HI-FOG Training 5 August 2008 Amit Lior

3 What is GPU?  Marioff HI-FOG GPU is the only water-mist system propelled by a Gas- driven Pump Unit.  Like accumulator units, the GPU is using compressed gas as propellant and as atomizing agent, yet the GPU utilizes non-compressed water source.  GPU system is actuated either manually or automatically. Provided with gas cylinders and a water tank, the GPU is a self contained unit, requiring no supply of electric power or water for operation  Marioff HI-FOG GPU was tested for both fire-righting ability and for component qualities to the satisfaction of FM (USA), VdS (Germany), and VNIIPO (Russia).

4 Applicable Standards  NFPA 750 Standard on Water Mist Fire Protection Systems  FM Approval Standard Class 5560  VdS Standard  IMO

5 Applications Machinery Space:  oil pumps  oil tanks  fuel filters  transformer vaults  gear boxes  drive shafts  lubrication skids  diesel engine driven generators  other similar machinery using fuel and/or lubrication fluids with volatilities less than or equal to light diesel

6 Applications 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.

7 Applications Turbine Enclosures

8 Protected Enclosures VdS Approved:  Maximum enclosure height 5 m  Maximum enclosure volume 500 m3 FM Approved:  Maximum enclosure height 7,5 m  Maximum enclosure volume 750 m3 IMO Approved:  Maximum enclosure height 7,5 m  Maximum enclosure volume 1500 m3 Also:  All ventilation openings and\or forced ventilation arrangement shall be capable of automatic closure or shut-down prior to system discharge.

9 Structure & Components Each GPU consists of:  Gas-Driven Pump Unit module  Bank of compressed gas cylinders, including actuator valves.  Section Valve  Monitoring devices (pressure gauge etc’.)

10 Structure & Components Actuator Valves  Hydraulic Valve  Solenoid Valve  dP (delta P) Valve  Slave Valve

11 Structure & Components Gas cylinders Preferably provided by local supplier. Dimensions:  Diameter:ca. 240 mm  Maximum cylinder height:1390 mm - 1525 mm  Thread type:24,32  1,814 SFS2292 (adaptor applicable for several options) Amount of gas cylinders depends on:  Number of spray-heads  Duration of discharge

12 Structure & Components Monitoring Devices  Pressure Gauge- Water Input line  Pressure Gauge- Output line  Pressure Gauge- Gas Cylinder (included in actuation valves)  Pressure Switch- Gas Cylinder (included in actuation valves)

13 Structure & Components Additional Devices  Shutoff Valve  Protection caps  Protective cabinet

14 Operation Standby  All section valves closed.  Pressure of ca. 25 bar in maintained by the standby pump.  All actuator salves are closed.  There is no flow in the system.

15 Operation Start Signal  One Section Valves opened.  Some flow generated by the standby pump, but the pressure drops.

16 Operation First Cylinder, Bank I  Hydraulic Valve opens.  Pressure increases in the manifold of cylinder bank I.

17 Operation Bank I  Slave Valves of bank I open.

18 Operation Discharge with Bank I  Pressure of bank I drops.

19 Operation First Cylinder, Bank II  dP valves releases the first cylinder of bank II.  Pressure increases in the manifold of cylinder bank II.

20 Operation Bank I  Slave Valves of bank II open.

21 Spray-Heads 4S 1MC 8MC 1000 Installed at ceiling level or above a 2m wide door discharging downward. 4S 1MC 8MB 1000 Installed above a 2m wide door discharging downward.

22 Spray-Heads Door spray-heads are not required for IMO approved systems.

23 Spray-Heads Ceiling height up to 5 m and total volume of no more than 500 m 3 :  Max. spacing between spray-heads 5 m.  Max. distance from walls 2,5 m. Ceiling height up to 7,5 m and\or total volume of no more than 750 m 3 :  Max. area between four adjacent spray-heads 12,5 m2.  Max. distance from walls 2,5 m.

24 Distribution Network Pressure Calculation:  Darcy-Weisbach calculation method is applied, assuming complete mixing of the water and gas mixture.  The spray head-specific nominal water flow rate of 12,5 litre/minute is multiplied by 1.8 and hydraulic calculations are run normally.  The calculated pressure drop must be within 5 – 15 bar.

25 Distribution Network

26 System Design 1) Application & Requirements 2) Enclosure 3) Spray-Heads location 4) Gas cylinders & Piping Network

27 System Design Sample RFQ No. 1  Application: fuel storage  Dimensions: 10 m (L)  8 m (W)  6 m (H)  Fire hazard: five fuel tanks, 350 litre of Diesel fuel each  Approval authority: FM  Protection time: 30 minutes

28 System Design Sample RFQ No. 2  Application: generators room  Dimensions: 14 m (L)  9 m (W)  10 m (H)  Fire hazard: two diesel generators  Approval authority: N.A.  Protection time: 60 minutes

29 System Design Sample RFQ No. 3  Application: steam turbine  Dimensions: 14 m (L)  9 m (W)  7,5 m (H)  Fire hazard: steam turbine  Approval authority: FM  Protection time: 15 minutes 945 m 3

30 reminder: Spray-Heads Ceiling height up to 5 m and total volume of no more than 500 m 3 :  Max. spacing between spray-heads 5 m.  Max. distance from walls 2,5 m. Ceiling height up to 7,5 m and\or total volume of no more than 750 m 3 :  Max. area between four adjacent spray-heads 12,5 m2.  Max. distance from walls 2,5 m.

31 System Design Sample Spray-Heads location No. 1  Application: compressors room  Dimensions: 10 m (L)  8 m (W)  6 m (H)  Fire hazard: electric motors, compressors, oil skid (150 litre)  Compressed gas: nitrogen, 200 bar  Approval authority: FM  Protection time: 30 minutes volume = 480 m 3 door spray-heads: not required grid: 2 \ 1 \ 2

32 System Design Sample Spray-Heads location No. 2  Application: generator room  Dimensions: 14 m (L)  10 m (W)  7 m (H)  Fire hazard: generator, electric cabinet  Compressed gas: air, 200 bar  Approval authority: IMO  Protection time: 60 minutes volume = 980 m 3 door spray-heads: not required grid: 3 \ 2 \ 3

33 System Design Sample Spray-Heads location No. 3  Application: engine test cell  Dimensions: 12 m (L)  8 m (W)  4 m (H)  Fire hazard: motor  Compressed gas: air, 200 bar  Approval authority: FM  Protection time: 60 minutes volume = 384 m 3 door spray-heads: required grid: 2 x 3

34 reminder: Distribution Network Pressure Calculation:  Darcy-Weisbach calculation method is applied, assuming complete mixing of the water and gas mixture.  The spray head-specific nominal water flow rate of 12,5 litre/minute is multiplied by 1.8 and hydraulic calculations are run normally.  The calculated pressure drop must be within 5 – 15 bar.

35 System Design Sample Piping Network No. 1

36 reminder: Gas Cylinders Amount of gas cylinders depends on:  Number of spray-heads  Duration of discharge

37 System Design Gas Cylinders and Actuation Valves for Sample No. 1  5 spray-heads  30 minutes discharge 15 cylinders = two banks of 8 cylinders = two banks of 4 + two banks of 4 First release valve: Hydraulic Second bank release: dP

38 Restrictions Site Specific:  Hazardous Areas  Temperature Range  Construction Materials  Water supply Enclosure:  Shut-down time  Forced ventilation and openings GPU:  Max. amount amount of spray-heads

39 Don’t Forget Other system:  Detection System  Alarm  Gas supply Additional:  Enclosure  Warenty and service

40 Thanks


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