High Sensitivity Smoke Detection Kelvin Miller.

transcript

High Sensitivity Smoke Detection

www.kfp.co.uk

Kelvin Miller

What is HART High SensitivitySmoke Detection (HSSD)?

• Aspirating detection system

• Fan draws air through sampling pipework system

• Capable of detecting smoke concentration as low as 0.0025% obscuration per metre down to 1%

• Display Control Unit provides indications and controls

HART XL Detector Unit

Normal Pre-Alarm Alarm Fault

Tri-colour LED StatusIndicator

Hart XL Detector Unit-Option without Display Control Unit

Laser Detector UnitMain Control Board

Fan Assembly

HART XL Detector Unit

Clip-in modular assembly, removable cable connectors

Stages of Fire

Pre Alarm 2

Pre Alarm 1

100%Alarm 1

Pre Alarm 2

Alarm 2Up to 1%

Kidde HSSD Performance

• Superior particle counting technology

• High immunity smoke discrimination

• Dust particle discrimination

• High immunity to unwanted alarms

• No filters

• Reliable & stable

• Automatic sensitivity & calibration checking

• Simple maintenance

Kidde HSSD Detector Operation

Optical Sensor

Control PCB

Collimating Lens

Solid State Laser

Air Flow Sensor

Receive Optics

DetectorTest LED

Kidde HSSD Particle Discrimination

10 micron particle size

Typical smoke particle

Upperthreshold

Lowerthreshold

10 micron particle size

Typical dust particle

Upperthreshold

Lowerthreshold

Photodiodeoutput

HSSD Market

• Aspirating HSSD has become widely accepted as a reliable smoke detection method

• HSSD is now standard practice in Electronic Data Processing (EDP) environments, telecommunications suites and computer rooms

• HSSD has become a viable alternative to other forms of detection in areas previously not considered such as warehouses, cold stores, production areas, shopping malls and heritage buildings

• HSSD is often used when other forms of detection prove ineffective or difficult to maintain

• Design engineers are identifying more areas where aspirating HSSD will provide the best solution to an assessed risk

• On all new projects & retrofits there is scope to include HSSD & provide the end user with an improved detection solution

• HSSD can often be installed at comparable or at lower cost than other forms of detection

HSSD Market

Why Hart Aspirating Smoke Detection?

• Earliest detection to enable business continuity

• Extra time is required for safe evacuation

• Unnecessary suppression release must be avoided

• Smoke is difficult to detect

• Environmentally challenging areas

• Aesthetics & concealed detection are important

• Maintenance access is limited

Earliest Detection to Enable Business Continuity

Critical processes that cannot incur any business

disruption

• Telecommunications facilities

• Computer rooms

• Banking operations

• Production facilities

• Internet Service Providers

Extra Time is Required for Controlled Evacuation

Environments where rapid exit can be impeded

• Underground Stations

• Theatres

• Public buildings

• Airports

Smoke is Difficult to Detect

Environments with high ceilings, high air flows or

vast open areas provide unique characteristics

• Clean rooms

• Warehouses

• Aircraft hangars

• Computer rooms

• Atria

Unnecessary Suppression Release can be Avoided

Early warning gives time to investigate to avoid

unnecessary suppression release

• Telecommunication facilities

• EDP facilities

• Computer rooms

• Electrical sub-stations

Environmentally Challenging Areas

Aggressive environments with high levels of

pollution or extreme temperature conditions can be

protected reliably with acceptable maintenance levels

• Cold Stores

• Production areas

• Paper mills

• Underground tunnels

• Mines

Aesthetics are Important & Replacement Impossible

Interiors that must not be spoilt by unsightly conventional

detectors - Hart XL can be installed unobtrusively

• Cathedrals

• Stately Homes

• Museums

• Art Galleries

Maintenance Access is Limited

Hart XL can be located at an accessible location while

the sampling pipework makes its way to the restricted area

• Warehouses

• Production machinery

• Prisons

• Restricted areas

• EMC Controlled areas

• Hospitals

Direct connection to PC for Programming and Downloading using LaserNet Software. No programmers or interfaces are required

Programming and Diagnostics

Programming Options

• Fixed or automatically set sensitivity

• Hart XL 0.05%/m to 1%/m obscuration

• Programmable relays

• Referencing

• Latching or non latching alarms

• Two or Four levels of Alarm

Diagnostics & Monitoring

• Download history & event log

• Full fault analysis

• Dial in & dial out via modem monitoring

• Intelligent interface module common alarm & fault relay outputs

History Log accessed through Lasernet

Kidde HSSD Networking Capability

With the addition of the HART Intelligent Interface Module (IIM), up to 127 standard Hart XL can be networked and displayed on a PC monitor

I. I. M.

Servicing and Maintenance

Benefits

• Easy & quick to service & maintain

• Lower costs

• Shorter downtimes

• Reduced spares holdings

New Updated SNIFF System Design Software

Windows compatible Easy operation and clear displays Isometric drawings from several angles

SnifferPipe - a comprehensive range of red ABS smoke sampling pipe

Efficient & robustSmooth bore facilitates air flow to detectorLightweight and easy to installHigh resistance to chemicals & weatheringWide temperature range,-40 to +80ºC

Conventional Detector Layout (Secondary Detection) BS6266

2.5m 5m 5m 5m 5m 2.5m

FIRE ZONE PLAN

HSSD Layout (Secondary Detection) BS6266

Sampling pipes

FIRE ZONE PLAN

Sample Holes

2.5m 5m 5m 5m 5m 2.5m

Distributed sampling network

Primary Detection

Where smoke will travel when air

conditioning is operating

• Air handling units

• Duct detection

Primary Detection

In Cabinet sampling

BS6266 Wire Burn Test

Wire Burn test Rig

10/0.1mm pvc wire

Burn wire for 1 minuteswith a further two minutes allowed for the detector to respond

One Metre Test

Approvals

• LPCB - UK

• Vds - Germany

• UL and FM - USA

• Afnor - France

• Shangyen - China

Beam Smoke Detection

Guardall BM5

• 100m Linear Smoke Detector

• Optional LCD Display

• Multi-Language Support

• Event Memory

• Heat Channel

• Four Output Relays

Beam Smoke Detection

3 to 5% Ob/m

1% Ob/m

BM5 Features

• Real-time Clock

• Programmable Outputs

• Programmable Thresholds– Smoke– Heat– Smoke Pre-alarm– Heat Pre-Alarm

BM5 Operation

• 10.5 V to 33 V Operation

• Two Line LCD Keypad

• Engineer & User PINs

• Electronic Alignment

• Fix Beam Level from Keypad

• Laser Alignment

Approvals

• LPC Approval to BS5839

• prEN 54 Part 12 Approval in France & Germany

• Designed to UL Requirements

• 150m Non-approved Unit

Linear Heat Detection

What is Linear Heat Detection?

• Continuous heat detector in the form of a cable

- Alarmline Analogue: averaging heat detector

- Alarmline Digital: fixed temperature heat detector

Analogue LHD Cable

• Definition:

- Multi-conductor cable containing insulators whose resistance varies proportionately to changes in temperature

- Re-settable, provided temperature does not exceed burn-off point of PVC coating

- Alarm level adjusted via controller

Alarmline Analogue LHD Cables

• High resistance - standard applications

• Nylon extruded - chemical resistance

• Bronze braided - increased mechanical

protection over standard blue

• Stainless Steel braided over nylonextrusion - offshore applications

LHD 4 Controller

• Features

- Alarm level adjusted via moveable link

- Open circuit and closed circuit fault monitoring

- Fire and fault output to conventional fire alarm panels

- Volt-free relay option for analogue addressable fire alarm panels

- Eurocard 19” rack option

Digital LHD Cable

• Definition:

- A cable which contains an insulator which melts at a specific temperature

- Switch output provided when the alarm temperature is reached

- Not re-settable

Alarmline Digital LHD Cables• Polythene braid 70º C

• Nylon over sheath 70º C

• Polythene braid 90º C

• Nylon over sheath 90º C

• PVC 113º C

• PVC 180º C

• Fluoropolymer 238º C

Alarmline LHD - Benefits

• Flexible- Mechanically- Electrically

• Durable- Wide range of casings / braiding- Operating range -65º to +200º C- Unaffected by operating environment

Sensor Clips

Edge clip

Sensor cable

Neoprene sleeveCable tie

‘V’ Clip

Sensorcable

Neoprenesleeve

Applications

• Heavy industry

• Warehousing

• Storage tanks

• Conveyors and escalators

• Cable trays

• Floor & ceiling voids

• Tunnels

• Car parks

Racking

Sensor Cable

Traywork width 600mm maximum

Sensor cable

Powercables

Sensorsupports

Conveyor

Heat sensingcable Idle rollers

Conveyor Belt

Conveyor return

Escalators

Sensor Pad

LHD Bronze Braided sensor cable

International Approvals

Alarmline (Analogue) Alarmline (Digital)

UK power generation- 5117 P 11- EPA 022/215

Factory Mutual- OB 9A2.AY- OR 5A4.AY

Chinese Fire Officers- MAAL 96652

Chinese Power Generation- NSTCFEPQ (Appr) 92005

German VdS (1995)

UK power Generation- EPA 019-021- EPA 206/220

Factory Mutual- OD 6A9.AY- 300 5155- 300 3834

Chinese Fire Officers- MAAL 96652- 300 8312- 300 8933

High Sensitivity Smoke Detection Kelvin Miller.

Documents