Firefly - dheni.com

Firefly Preventive Fire Protection Systems

Firefly in brief

• Firefly AB – a Swedish company founded in 1973 • A leading supplier of spark detection systems • Originates from Sunds Defibrator (Metso Panelboard) • Focus on development and design of spark detection systems and preventive fire protection systems for 40 years • Listed on the NASDAQ/OMX stock exchange in Stockholm • Head office in Stockholm with agents and distributors worldwide

Firefly AB Applications &

Solutions Principle of spark

detection Fire Risks Firefly Pictures

Wood panel • Particle board • MDF • OSB • Plywood

Woodworking • Sawmill • Furniture • Flooring

Pulp & paper • Pulp • Paper • Packaging

Tissue • Manufacturing • Converting

Hygiene • Diaper • Sanitary pads • Medical/incontinence • Airlaid

Bioenergy • Pellet production • Power plants • Briquette production

Recycling • Paper/waste/wood recycling • Sludge drying

Power generation • Turbines • Wind mills • Power plants

Food • Cacao/chocolate • Grain mill • Sugar • Cereal • Baked products • Dairy products

Tobacco • Cigarettes • Cigarette filters • Snuff

Other • Oil refineries • Chemical • Metal • Textile • Printing • Painting • Fodder

OEM




Industry applications

• Spark detection systems

Firefly only supplies complete systems with detection, extinguishing and a control system

• Spot Protection of High Risk Machines - Special solutions for high risk machinery, based on early detection and quick gas or water mist suppression.




Infra systems

• Sentio® - Early detection of combustion gases using intelligent multiple gas detection




Silo

Ignition source

Filter Silo

Example – Filter without protection




Silo Filter

The principle of spark detection

Ignition source

DETECTION EXTINGUISHING

Which particles are to be detected?




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Which particles are dangerous? Enough temperature

(MIT for dust cloud)

Enough temperature (MIT for dust layer)

Enough energy (MIE)




A hot particle of 470°C can be much more dangerous than a 1000°C spark

• A particle of 470°C with an energy of 40mJ is enough to start a fire or a dust explosion - Note that this is a “black” particle

• A spark has a temperature of about 1000°C • If the energy is higher than 40mJ it is dangerous and must be detected Many sparks have much LESS energy - i.e. too little energy to ignite




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Detecting the real ignition sources

Filter Silo

GD (400 °C)

TD (250 °C)




Fire Risks

Firefly AB Applictaions &



Firefly Filter Protection




Firefly - Pictures




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Designed to detect ALL potential ignition sources: sparks, glows OR hot black particles Insensitive to daylight – Minimises false alarms

Firefly spark / hot body detectors




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GD • Based on Lead Sulphide Cell (PbS) • Detects from 400°C • 180° view angle • Self-cleaning in most pneumatic transport • Protection of filters, cyclones etc (dust clouds) TD • Based on Lead Sulphide Cell (PbS) • Detects from 250°C • 180° view angle • Self-cleaning in most pneumatic transports • Protection of silos, intermediate storage etc (layers of dust)

ALL FIREFLY DETECTORS ARE INSENSITIVE TO DAYLIGHT

Firefly spark / hot body detectors




Firefly Multi-checkpoint™ technology The passing ignition source will be checked 3 times before detection is approved - thus achieving high detection accuracy and minimum risk of false alarms




Firefly DualEye™ technology

Two detector cells integrated in one detector - Enables 180° view angle

- One detector will be able to cover the cross-section of a duct





Full 180° view angle will enable better coverage of chutes with large material flows

Other flat lens detectors have a view angle of 70-100°





Firefly detectors with 180 ° view angle Detectors with 70-110° view angle

Closest detector will “see” the glow Detector on opposite side needs to

“see” the glow through the material flow

GLOW GLOW




Self-cleaning effect The air stream in a pneumatic duct or the material flow in a chute will normally keep the lens clean. Keeping half the glass clean is enough for full functionality.




Additional air cleaning of detector glasses

In case the material is very sticky and builds up on the detector glass, there are different proven methods of keeping the glass clean




Air cooling of the detector glasses

CAR - Air cooling equipment for the detectors

If the temperature exceeds 60°C the

detectors must be equipped with cooling

air

The air must be instrument air (dry and

oil-free)

Air consumption about 10-50 lit/minute




Firefly Protecting baffles

If hard pieces (stones, metal etc) occur in the material flow or if the

material is very abrasive, protecting baffles can be used to protect the

glass




FD • Single IR - Flame detector • 180°x 360° view angle • Extremely quick reaction time • Used inside process volumes / machines

MD • Single IR – Combined flame / glow detector • 180°x 360° view angle • Extremely quick reaction time • Used inside process volumes / machines

Firefly Flame detectors

ALL FIREFLY DETECTORS ARE INSENSITIVE TO DAYLIGHT




OAD • 2 Channel UV/IR - Flame detector • High immunity to false alarms • Quick reaction time • Used in open areas

OPD • 5 Channel IR (IR5) – Flame detector • High immunity to false alarms • Quick reaction time • Less sensitive to dirty applications • Used in open areas ALL FIREFLY DETECTORS ARE INSENSITIVE TO DAYLIGHT

Firefly Flame detectors




Firefly – OAD detector

• Used for quick and early detection of flames in open areas

• Two channel – UV/IR technology - Efficient flame detection - Patented Fire Event Analysis (FEA™) discrimination technology - Minimises false release

• Constant Self-testing

- Cleaning of the detector glass

- Type and sensitivity of the detector

- Temperature in electronics

- Moisture content in electronics




Principle with OAD detector – emission of radiation

4,3 0,2 0,2 4,3 OAD (UV/IR)

(Using one UV and one IR reference point to ”identify” a flame)

(µm) (µm)

Spectral response – Hydrocarbon fire Spectral response – Sunlight




http://en.wikipedia.org/wiki/File:Flame_detection_emission_of_radiation.JPG

http://en.wikipedia.org/wiki/File:Flame_detection_sunlight.JPG

Principle with OAD detector – hydrocarbon fire

(µm) 4,3 0,2 OAD (UV/IR)

UV/IR ”Pattern” - OK

+ flicker - OK

= approved flame

”pattern” = correlation

between the UV and IR levels




Principle with OAD detector – sunlight

(µm) 4,3 0,2 OAD (UV/IR)

Incorrect ”pattern”

= no detection




Firefly – OPD Detector

• Used for quick and early detection of flames in open areas

• Five channel – 5 x IR Technology - Efficient flame detection - Patented Fire Event Analysis (FEA™) discrimination technology - Minimises false release - Less sensitive to dirt on the detector glass

• Constant Self-testing - Cleaning of the detector glass - Type and sensitivity of the detector - Temperature in electronics - Moisture content in electronics

• Can be located in areas that are more exposed to

fumes and dirt




Principle with OPD detector – emission of radiation

2,2 2,9 3,7 4,4 5,8 5,8 4,4 3,7 2,9 2,2 (µm) (µm) OPD (5xIR)

(Using 5 different IR reference points to ”identify” a flame)

Spectral response – Hydrocarbon fire Spectral response – Sunlight




http://en.wikipedia.org/wiki/File:Flame_detection_emission_of_radiation.JPG

http://en.wikipedia.org/wiki/File:Flame_detection_sunlight.JPG

Principle with OPD detector – hydrocarbon fire

5 x IR ”pattern” - OK

+ flicker - OK

= approved flame

2,2 2,9 3,7 4,4 5,8 (µm) ”pattern” = correlation

between the five IR levels

OPD (5xIR)




Principle with OPD detector – sunlight

2,2 2,9 3,7 4,4 5,8 (µm) OPD (5xIR)

Incorrect ”pattern”

= no detection




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• Water extinguishing

• Water mist

• Steam

• Diverting / isolation of ignition sources

• Inert gas

Firefly extinguishing




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Firefly PowerImpact™ extinguishing

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- Used in process ducts and chutes

• Unique design - spraying from different directions into a chute or duct

• Full cone spray nozzles

• Large water droplets for more momentum and penetration

• Minimum three water nozzles and solenoid valves per zone

• Quick-connection and flexible hose - Easy to test the system without releasing water into the process




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• Efficient for extinguishing of flames in machines

or in open areas

• Average droplet size approximately 120 micron

• Smooth cooling effect – less risk of thermal shock

• Minimal water usage

• Pressure 7 – 9 bar, continuous water supply

Firefly water mist




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Three main extinguishing mechanisms of water mist

The small water droplets will evaporate into steam

• Cooling - when turning into vapor, the water mist absorbs more heat from the fire than any other extinguishing agent (>2 MJ/kg) • Inerting - when evaporating, the water particles expand by 1700 times, thereby displacing the oxygen • Heat absorption - The water mist will “block” the heat transfer from the fire




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Hydropress Equipment




Silo FIV/PSG – Fast Isolation Valve

Silo GIV – Guillotine Valve

BIV – Butterfly Valve

JIV – Venetian Blind Valve

DIV – Diverter Valve

Firefly – Isolation and Diverter valves




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Control unit type CUE

Master unit type MUE

• Control unit type CUE will be located close to the process section • Shorter cables from the CUE-unit to detection / extinguishing equipment • Easier installation • Individual function and battery backup from each panel means higher safety • One master unit MUE can be used to collect data from up to 30 CUE-units

Decentralised control system




gas

CUE CUE

water

CUE

steam

plant area 1

Central controlroom

field

MUEmodem

Firefly servicecenter




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