Marioff HI-FOG MAU Systems Marioff HI-FOG Training 4 August 2008 Amit Lior.

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Marioff HI-FOG MAU Systems

Marioff HI-FOG Training

4 August 2008

Amit Lior

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 units

Marioff 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 operation

Marioff 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).

Applicable Standards

NFPA 750 Standard on Water Mist Fire Protection Systems

FM Approval Standard Class 5560

VdS draft Standard

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

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.

Applications

Turbine Enclosures

Protected Enclosures

General guidelines:

Maximum enclosure height 5 m

Maximum enclosure width and length 7,5 m

Maximum enclosure volume 260 m3

All ventilation openings and\or forced ventilation arrangement shall be capable of automatic closure or shut-down prior to system discharge.

max. 7,5 m

max. 260 m3

Structure & Components

Each MAU consists of:

One (1) compressed gas cylinder

One, Two or Three (1 , 2 or 3) water cylinders

Actuator Valve

Monitoring devices (pressure gauge etc’.)

Standard MAU sizes: MAU-50 1 50 L water + 1 20 L compressed gas

MAU-100 2 50 L water + 1 50 L compressed gas

MAU-150 3 50 L water + 1 50 L compressed gas

Gas cylinders

Preferably provided by local supplier.

Dimensions: Diameter: ca. 240 mm Maximum cylinder height: ca. 1600 mm Thread type: 24,32 1,814 SFS2292

(adaptor applicable for several options)

Each MAU has a single compressed gas cylinder: MAU-50: 20 Litre MAU-100 \ MAU-150: 50 Litre (minimum nominal capacity 48

Litre)

Compressed gas may be either air or nitrogen. Applicable pressure of

compressed gas should be one of the following: 150 bar @ 15C 200 bar (preferable) @ 15C 250 bar @ 15C

Structure & ComponentsWater cylinders

Nominal 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.

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.

Actuator Valves

Solenoid Valve

dP (delta P) Valve

Slave Valve

Wall Mounted rack

Free Standing rack

Monitoring Devices

Pressure Gauge- Gas Cylinder pressure

Pressure Gauge- Water Cylinders pressure

Monitoring Devices

Pressure Switch- Gas Cylinder

Pressure Switch- Water Cylinders

Pressure Transducer

Monitoring Devices

Water Level- visual indicator

Water Level- electric switch

Additional Devices

Shutoff Valve

Filling adaptor

Protection caps

Protective cabinet

Operation

Single Accumulator

Standby

Operation

Single Accumulator

Standby

Opening the Actuation Valve

Operation

Single Accumulator

Standby

Discharge

Operation

Simultaneous Discharge Standby

Operation

Discharge

Operation

Extended Discharge Standby

Operation

Discharge

Operation

Discharge

Operation

Discharge

Spray-Heads

4S 1MC 8MB 1100

Spray-heads are installed in one of the following orientations:

At ceiling level, discharging downward.

Wall mounted, discharging horizontally.

Spray-Heads

Amount of Spray-Heads:

65 m3 : one spray-head

130 m3 : two spray-heads

260 m3 : four spray-heads

Note: 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 room

obstruction prevents the construction of economic and uniform grid

the amount of fire risks justifies more spray-heads for proper coverage

For 10 minutes discharge:

MAU-50 : 1 spray-head

MAU-100 : 2 spray-heads

Distribution Network

Network for the release of one or two spray-headsNetwork 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.

Distribution Network

single spray-head, typically installed at the centre of the ceiling

two spray-heads, installed either at ceiling level or wall mounted

four spray-heads, installed either at ceiling level or discharging horizontally

System Design

1) Application & Requirements

2) Enclosure

3) Spray-Heads location

4) Accumulator Unit & Piping Network

System Design

Sample RFQ No. 1

Application: fuel storage

Dimensions: 6 m (L) 4 m (W) 3 m (H)

Fire hazard: five fuel tanks, 350 litre of Diesel fuel each

Approval authority: N.A.

Protection time: 30 minutes

System Design

Sample RFQ No. 2

Application: generators room

Fire hazard: two diesel generators

System Design

Sample RFQ No. 3

Application: steam turbine

Dimensions: 7,5 m (L) 7,5 m (W) 5 m (H)

Fire hazard: steam turbine

281 m3 281 m3

reminder: Spray-Heads

Amount of Spray-Heads:

65 m3 : one spray-head

130 m3 : two spray-heads

260 m3 : four spray-heads

Note: These numbers are the minimum

System Design

Sample Spray-Heads location No. 1

Application: elevator motors room

Dimensions: 5 m (L) 4 m (W) 3,5 m (H)

Fire hazard: electric motors

volume = 70 m3 : two spray-heads volume = 70 m3 : two spray-heads

location : ceiling, uniform grid location : ceiling, uniform grid

1,25 m1,25 m

System Design

Application: generator room

Fire hazard: generator, 200 litre fuel tank

volume = 210 m3 : four spray-heads volume = 210 m3 : four spray-heads

location : ceiling, uniform grid location : ceiling, uniform grid

1,75 m

3,5 m1,75 m

System Design

Application: turbine enclosure

Fire hazard: gas turbine

volume = 168 m3 : four spray-heads volume = 168 m3 : four spray-heads

location : wall mounted location : wall mounted

reminder: Spray-Heads

For 10 minutes discharge:

MAU-50 : 1 spray-head

System Design

Sample Accumulator Unit & Piping Network No. 1

Application: elevator motors room

Dimensions: 5 m (L) 4 m (W) 3,5 m (H)

Fire hazard: electric motors

two spray-heads = MAU-100 two spray-heads = MAU-100 20 minutes = two accumulator units20 minutes = two accumulator units

Welcome addition: accumulator unit(s) for second dischargeWelcome addition: accumulator unit(s) for second discharge

System Design

Sample Accumulator Unit & Piping Network No. 2 Application: generator room

Fire hazard: generator, 200 litre fuel tank

Welcome addition: accumulator unit(s) for second dischargeWelcome addition: accumulator unit(s) for second discharge

30 minutes = three accumulator units30 minutes = three accumulator units

four spray-heads = MAU-150 four spray-heads = MAU-150

Restrictions

Site Specific:

Hazardous Areas

Temperature Range

Construction Materials

Enclosure:

Shut-down time

Forced ventilation

Don’t Forget

Other system:

Detection System

Gas supply

Additional:

Enclosure

Warenty and service

ThanksThanks

Marioff HI-FOG MAU Systems Marioff HI-FOG Training 4 August 2008 Amit Lior.

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