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Marioff HI-FOG Training 5 August 2008 Amit Lior

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Presentation on theme: "Marioff HI-FOG Training 5 August 2008 Amit Lior"— Presentation transcript:

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

2 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).

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

4 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

5 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.

6 Applications Turbine Enclosures

7 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 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.

8 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’.)

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

10 Structure & Components
Gas cylinders Preferably provided by local supplier. Dimensions: Diameter: ca. 240 mm Maximum cylinder height: 1390 mm 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

11 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)

12 Structure & Components
Additional Devices Shutoff Valve Protection caps Protective cabinet

13 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.

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

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

16 Operation Bank I Slave Valves of bank I open.

17 Operation Discharge with Bank I Pressure of bank I drops.

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

19 Operation Bank I Slave Valves of bank II open.

20 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

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

22 Spray-Heads Ceiling height up to 5 m and total volume of no more than 500 m3: 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 m3: Max. area between four adjacent spray-heads 12,5 m2.

23 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.

24 Distribution Network

25 System Design Application & Requirements Enclosure
Spray-Heads location Gas cylinders & Piping Network

26 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

27 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

28 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 m3

29 reminder: Spray-Heads
Ceiling height up to 5 m and total volume of no more than 500 m3: 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 m3: Max. area between four adjacent spray-heads 12,5 m2.

30 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 m3 door spray-heads: not required grid: 2 \ 1 \ 2

31 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 m3 door spray-heads: not required grid: 3 \ 2 \ 3

32 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 m3 door spray-heads: required grid: 2 x 3

33 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.

34 System Design Sample Piping Network No. 1

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

36 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

37 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

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

39 Thanks


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