Upload
melissa-oliver
View
216
Download
2
Tags:
Embed Size (px)
Citation preview
High Sensitivity Smoke Detection
www.kfp.co.uk
Kelvin Miller
2
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
3
HART XL Detector Unit
4
Normal Pre-Alarm Alarm Fault
Tri-colour LED StatusIndicator
Hart XL Detector Unit-Option without Display Control Unit
5
Laser Detector UnitMain Control Board
Fan Assembly
HART XL Detector Unit
Clip-in modular assembly, removable cable connectors
6
Stages of Fire
Ob
scu
ratio
n
Time
4
Pre Alarm 2
Pre Alarm 1
100%Alarm 1
Pre Alarm 2
Alarm 2Up to 1%
43
7
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
9
Kidde HSSD Detector Operation
Optical Sensor
Control PCB
Collimating Lens
Solid State Laser
Air Flow Sensor
Receive Optics
DetectorTest LED
10
Kidde HSSD Particle Discrimination
10 micron particle size
Typical smoke particle
Upperthreshold
Lowerthreshold
10 micron particle size
Typical dust particle
Upperthreshold
Lowerthreshold
Photodiodeoutput
11
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
12
• 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
13
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
14
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
15
Extra Time is Required for Controlled Evacuation
Environments where rapid exit can be impeded
• Underground Stations
• Theatres
• Public buildings
• Airports
16
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
17
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
18
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
19
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
20
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
21
Direct connection to PC for Programming and Downloading using LaserNet Software. No programmers or interfaces are required
Programming and Diagnostics
22
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
23
History Log accessed through Lasernet
24
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.
25
Servicing and Maintenance
Benefits
• Easy & quick to service & maintain
• Lower costs
• Shorter downtimes
• Reduced spares holdings
26
New Updated SNIFF System Design Software
Windows compatible Easy operation and clear displays Isometric drawings from several angles
27
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
28
Conventional Detector Layout (Secondary Detection) BS6266
2.5m 5m 5m 5m 5m 2.5m
2.5m
FIRE ZONE PLAN
5m
5m
2.5m
29
HSSD Layout (Secondary Detection) BS6266
Sampling pipes
FIRE ZONE PLAN
Sample Holes
2.5m
5m
5m
2.5m
2.5m 5m 5m 5m 5m 2.5m
30
Distributed sampling network
31
Primary Detection
Where smoke will travel when air
conditioning is operating
• Air handling units
• Duct detection
32
Primary Detection
33
In Cabinet sampling
34
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
35
Approvals
• LPCB - UK
• Vds - Germany
• UL and FM - USA
• Afnor - France
• Shangyen - China
Beam Smoke Detection
37
Guardall BM5
• 100m Linear Smoke Detector
• Optional LCD Display
• Multi-Language Support
• Event Memory
• Heat Channel
• Four Output Relays
38
Beam Smoke Detection
20m
10 m
3 to 5% Ob/m
25m
1% Ob/m
39
BM5 Features
• Real-time Clock
• Programmable Outputs
• Programmable Thresholds– Smoke– Heat– Smoke Pre-alarm– Heat Pre-Alarm
40
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
41
Approvals
• LPC Approval to BS5839
• prEN 54 Part 12 Approval in France & Germany
• Designed to UL Requirements
• 150m Non-approved Unit
Linear Heat Detection
43
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
44
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
45
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
46
LHD 4 Controller
47
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
48
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
49
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
50
Alarmline LHD - Benefits
• Flexible- Mechanically- Electrically
• Durable- Wide range of casings / braiding- Operating range -65º to +200º C- Unaffected by operating environment
51
Sensor Clips
Edge clip
Sensor cable
Neoprene sleeveCable tie
‘V’ Clip
Sensorcable
Neoprenesleeve
52
Applications
• Heavy industry
• Warehousing
• Storage tanks
• Conveyors and escalators
• Cable trays
• Floor & ceiling voids
• Tunnels
• Car parks
53
Racking
Sensor Cable
54
Trays
Traywork width 600mm maximum
Sensor cable
Powercables
Sensorsupports
55
Conveyor
Heat sensingcable Idle rollers
Conveyor Belt
Conveyor return
56
Escalators
Sensor Pad
LHD Bronze Braided sensor cable
57
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
58