Philip Anderson National Sales Manager System Sensor Canada A hospital is like a city Living areas Machinery high technology Food prepservice Retail public spaces Open spaces parking Wide range of application challenges ID: 775899
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Slide1
Smoke Detector Applications and Testing Methods
Philip Anderson
National Sales Manager
System Sensor Canada
Slide2A hospital is like a cityLiving areasMachinery, high technologyFood prep/serviceRetail, public spacesOpen spaces, parkingWide range of application challengesSimilarity to other installations
Introduction
Slide3Patient areasLiving spacesData roomsKitchens, cafeteriasOpen spaces, atriums
Typical Applications
Similar requirements to apartment buildings, hotels, offices, dormitories, and elderly care facilities
Slide4Fire detection requirementsNuisance immunityAddressabilityTamper resistanceAccessibility for testing and maintenance
Patient Areas
Slide5Combine multiple
sensing technologiesQuick response to real firesHigh level nuisance immunity
Patient AreasMulti-Criteria Detectors
Ideal for areas where nuisance conditions are often present or mission critical activities are performed
Slide6Accurate DetectionSensor elements work together to decide appropriate response
Patient Areas Multi-Criteria Detectors
Infrared sensor
Electrochemical CO sensor
Heat sensors
Photoelectric smoke sensing
Slide7Frequent nuisance conditionsDorm/hotel rooms (shower steam, cigarette smoke)Industrial (welding)Theaters (theater smoke)Zero tolerance for nuisance conditionsFinanceData centerMedical facilities
Similar Applications
Slide8Application requirementsAccurate smoke detectionLocal annunciation of alarmGeneral alarm annunciation
Living Areas
Similar to other living spaces such as hotels, dormitories, and apartment buildings
Slide9Provide local annunciation via direct connection to sensor headEliminate additional devices and associated wiring, junction box, etcSmoke Alarm Application
Living AreasSounder Base
Slide10Sounder Base / Smoke Alarm
SMOKE WITH SOUNDER BASE
DETECTOR IN HALLWAY
HORN STROBE IN HALLWAY
SMOKE WITH SOUNDER BASE
Local event
- Turn on local
sounders
- Volume = high
- Tone = cont
General evac
- Turn on all
horns & strobes
- Turn on all
sounders
- Volume = high
- Tone = T3
- Synchronize
Slide11Very Early Warning Detection
Slide12Application RequirementsHigh-value equipment and data protection through point location of alarmDetect smoke dispersed by high air velocity with high sensitivity and high airflow tolerant chamber designOpen area and duct smoke detection
Data Rooms
Other areas are data rooms for telecommunication centers or server farms for Internet companies.
Slide13Air Aspiration Approach
Aspirated smoke detectors - air samplingOne central detector - high sensitivityAir is sampled via pipes in protected areaair is filtered before reaching detector
Slide14Provides Very Early Warning Fire Protection as per NFPA 76Coverage:900 square feet “Standard Coverage”400 square feet coverage for “Mission-Critical” Environments200 square feet coverage for high air movement areas
High Sensitivity Laser Spot Detector
Slide15A laserdiode is used to deliver ultra-high sensitivity0.02% to 2.0% per foot100 times more sensitive than a standard photoelectric smoke detectorAdvanced algorithms eliminate most false and nuisance alarms
Data RoomsHigh Sensitivity Laser Detector
Slide16Ideal where high air velocity / high air changes per hour existMay be mounted directly to machinery and air handling equipment
Data RoomsLaser Duct Smoke Detector
Slide17Mounted Within Server Cabinet
Slide18Air Return Layout
Aspiration
Sampling Pipe
Spot Type
Detectors
Slide19Air Return Layout
Spot
Laser Smoke Detectors
High-Sensitivity Duct Detector with up to 12’ Sampling Tube
Slide20Application requirementsProvide proper protection for large, open areasProvide coverage at an affordable costEliminate the interference or unsightliness of spot detection in open spaces
Open Spaces
Areas include atriums, churches, airports, gymnasiums, auditoriums, theaters, and malls
Slide21Beam Type smoke
detectors are a versatile and cost-effective solution for open area environments
Keep clear of reflective ceilings (12”-18”) but also other structural or mechanical obstructionsConsider the effects of incident light from skylights or overhead windows, especially as seasons change
Open Spaces
Beam Detector Installation Aids
Slide22Ceiling height affects Accessibility for maintenance and testing.Stratification - when smoke reaches the same temperature of the surrounding air, it stops rising.Dissipation - The higher the ceiling, the more smoke can dissipate by the time it reaches the detector.
Cathedral and Atrium Ceilings
Slide23Reflected Beam Principle
Transceiver
Reflector
Smoke from the
fire in the protected
area diffuses the
intensity of the
reflected
beam at the receiver
Slide24Practical locations for Beam use?
Areas with high ceilingsatriums, churchesLarge, open areaswarehouses, garagesMount detector on stable mounting surface
Slide25Annual Inspections
Each detector shall be:Visual inspected for cleanlinessTested for operation with smoke or simulated smoke
Slide26Annual Inspections
Each detector shall be:
Tested to ensure that it is operating within the rated sensitivity
Sensitivity may measured with
Manufacturers recommended test equipment
Directly from control units capable of providing that data through software
Third party calibrated equipment
Slide27Duct Detector Placement
Duct Detectors should be located in a straight area between 6 and 10 duct widths from any return openings, sharp turns or connections in the duct.Detectors may be mounted on inlet or outlet ducts, depending on the monitoring purpose or code requirement.When the duct detector's Alarm or Supervisory LED is not visible to responding personnel, a remote alarm or supervisory indication shall be provided.
Slide28AIR DUCT TYPE SMOKE DETECTORS
Where air duct type smoke detectors cannot be installed in the main supply duct, they shall be installed in each of the branch lines as close as practical to the supply fan downstream of the mixing box, filters and fan.Figure 24
Slide29AIR DUCT TYPE SMOKE DETECTORS
Where air duct type smoke detectors cannot be installed in the main supply duct, they shall be installed in each of the branch lines as close as practical to the supply fan downstream of the mixing box, filters and fan.
Figure 24
Slide30Inspected and tested to confirm operabilityRated for the air duct size and installed correctly for the air duct systemThe positive air flow and/or differential pressure at the sampling tubes is within the manufacturer’s specified limits
5.4.4 Air Duct Smoke Detectors
Slide31The positive air flow and/or differential pressure at the sampling tubes is within the manufacturer’s specified limits
5.4.4 Air Duct Smoke Detectors
Slide32Thank You!Questions?