Smoke Detector Testing
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1 Smoke Detector Testing Allen Hess CFAA Presentation April Building Technologies
2 Agenda Requirements Consumer Needs Challenges with Industry Acceptance How siemens a Detector sans italic Works Effects siemens of sans Time black on detector performance Maintenance Best Practices Conclusion Building Technologies
3 What our Standard Prescribes Building Technologies
4 What prescribes the testing and maintenance of Smoke detectors? CAN/ULC-S INSPECTION AND TESTING OF FIRE ALARM SYSTEMS... 4 Building Technologies
5 5.7.4 Smoke Detectors General Each smoke detector shall be visually inspected for cleanliness. When required, cleaning shall be in accordance with the manufacturer s recommendations. Ensure detector can and is operating 5 Building Technologies
6 5.7.4 Smoke Detectors General Each smoke detector shall be visually inspected for cleanliness. When required, cleaning shall be in accordance with the manufacturer s recommendations Each smoke detector shall be tested for operation by introducing smoke or simulated smoke to the detecting chamber in accordance with the manufacturer s instructions. Ensure physical operability 6 Building Technologies
7 5.7.4 Smoke Detectors General Each smoke detector shall be visually inspected for cleanliness. When required, cleaning shall be in accordance with the manufacturer s recommendations Each smoke detector shall be tested for operation by introducing smoke or simulated smoke to the detecting chamber in accordance with the manufacturer s instructions siemens sans Each bold smoke detector shall be tested to confirm that it is siemens within sans its italic rated operating range using a test method described siemens in Clause sans italic bold (Refer to Appendix E3.1, Field Device siemens Testing-Legends sans black and Notes.) Ensure calibration is within operating range and will respond as early as required 7 Building Technologies
8 5.7.4 Smoke Detectors General Each smoke detector shall be visually inspected for cleanliness. When required, cleaning shall be in accordance with the manufacturer s recommendations Each smoke detector shall be tested for operation by introducing smoke or simulated smoke to the detecting chamber in accordance with the manufacturer s instructions Each smoke detector shall be tested to confirm that it is within its rated operating range using a test method described in Clause (Refer to Appendix E3.1, Field Device Testing-Legends and Notes.) Corrective Action siemens sans A smoke black detector whose sensitivity is not within the required operating range shall be cleaned, retested in accordance with Clause , and if still not within its rated sensitivity, replaced with a compatible smoke detector. (Refer to Appendix E3.1, Field Device Testing-Legends and Notes.) 8 Building Technologies
9 5.7.4 Smoke Detectors General Each smoke detector shall be visually inspected for cleanliness. When required, cleaning shall be in accordance with the manufacturer s recommendations Each smoke detector shall be tested for operation by introducing smoke or simulated smoke to the detecting chamber in accordance with the manufacturer s instructions. Provide evidence Each smoke detector shall be tested to confirm that it is within Siemens its rated sansoperating range using a test method described in Clause siemens sans bold (Refer to Appendix E3.1, Field Device Testing-Legends and Notes.) siemens sans A smoke italic boldetector whose sensitivity is not within the required siemens operating sans black range shall be cleaned, retested in accordance with Clause siemens , black and italic if still not within its rated sensitivity, replaced with a compatible smoke detector. (Refer to Appendix E3.1, Field Device Testing-Legends and Notes.) Each smoke detector sensitivity measurement and if applicable, the cleaning date shall be recorded on the individual device record. (Refer to Appendix E3.1, Field Device Testing-Legends and Notes.) 9 Building Technologies
10 5.7.4 Smoke Detectors Acceptable methods of determining the smoke detector sensitivity are: A Manufacturer s recommended test instrument, equipment, or method; B Installed control units or transponders designed to test the sensitivity of individual smoke detectors; or siemens C Calibrated black italic instruments that provide the operation as described in CAN/ULC-S529, Standard for Smoke Detectors for Fire Alarm Systems, for the purpose of testing smoke detector sensitivity. 10 Building Technologies
11 What Consumers Need Building Technologies
12 Role of Detection The six fire safety subsystems recognized in the SFPE Engineering Guide to Performance-Based Fire Protection Analysis and Design of Buildings are [2007]: Fire initiation and development Spread, control, and management of smoke Fire detection Fire suppression Occupant siemens sans behavior italic and egress Passive fire protection Fire detection is one of the six subsystems identified in the SFPE Guide and hence is an essential component for achieving fire safety goals 12 Building Technologies
13 Fire Development and Intervention Flashover Building Technologies
14 Consumers Needs Early Warning Benefit Cost Benefit Cost Detection Reliably Affordably Protect People and Valuables Building Technologies
15 What is this Issue? Building Technologies
16 Industry Feedback/Perceptions Test tools not Approved Testing Impractical Too many test tools Subjective siemens evaluation sans italic of values Devices will false alarm in time Tools too expensive Testing Meaningless Physical testing more relevant Recommendations not acted on 16 Building Technologies
17 How A Detector Works Building Technologies
18 Ionization Detector 18 Building Technologies
19 Ionization Detector 19 Building Technologies
20 Photo Electric Detector (Scattering) 20 Building Technologies
21 Photo Electric Detector (Scattering) 21 Building Technologies
22 Multi Sensor Photo Detector 22 Building Technologies
23 Automatic Smoke Detectors Improvements in Quality and Quantity ASA (False Alarm Immunity)... Newer Generation Mio. Pcs Backward scattering Building Technologies
24 ASA False Alarm Immunity # of detectors per false alarm per year Neural smoke detector 2'500 2'000 1'500 1'000 siemens Standard black italic Smoke detector Wide spectrum smoke detector Wide spectrum smoke detector Neural smoke detector System innovation Field statistics Lab results Standards requirements 24 Building Technologies
25 Effects of Time on Detector Performance Building Technologies
26 Environmental effects on detectors Artificial aerosols and non-typical fire Siemens phenomena sans Detector locking Sabotage Dust, fibers, insects High-grade, patented optic Selectable parameters and multi-criteria evaluation Arrangement of grid and labyrinth Vibration, shock Construction and material selection Corrosive vapors Humidity protected electronic, highgrade components innovative, highly integrated electronic circuitry Extreme Temperatures Electromagnetic interference 26 Building Technologies
27 Effects of time on conventional Ionization detectors Dirt builds up in chamber causing leakage Airborne dusts absorb ions decreasing current Reduces detection capability Creates false alarms Conclusion Without compensation or maintenance/cleaning: - most likely will experience increase in false alarms with time 27 Building Technologies
28 Effects of time on conventional Photoelectric detectors Dust accumulates on transmitter/receiver reducing signal Dirt builds up on labyrinth causing reflections Airborne dusts cause reflects light Reduces sensitivity to smoke Creates false signals Creates false signals Conclusion Depending on construction and environment photo detectors - may become less or more sensitive with time 28 Building Technologies
29 U.S. EXPERIENCE WITH SMOKE ALARMS AND OTHER FIRE DETECTION/ALARM EQUIPMENT 2007 Nuisance alarms were the leading cause of disabled alarms. Problems associated with smoke alarm age may Include: sensitivity drift, which refers to a shift in the range of visibility obscuration or particulate density that will activate the smoke alarm. Such a shift can mean either an increase in nuisance activations (if sensitivity increases) or a decreased ability to react promptly to real fires (if sensitivity decreases). 29 Building Technologies
30 Maintenance Best Practices Building Technologies
31 Detector Revision Process (Cleaning) Detector sensitivity after 4 years field exploration Production limits Detector sensitivity after revision process Production limits # Detectors siemens 10 sans 30% bold out of the limits Sensitivity [%/m] Optical components after 4 years field exploration # Detectors Sensitivity [%/m] Optical components after revision process 31 Building Technologies
32 Best Practices, Global Comparison Building Technologies
33 International Standards Comparison 33 Building Technologies
34 Conclusion Building Technologies
35 Conclusions Canadian detector testing and maintenance Standards are consistent with global standards. Calibration (Sensitivity) testing continues to be important to ensure performance. Canada is lacking in defined intervals for detector replacement Shorter interval for replacement would reduce both the relevance and challenge of sensitivity testing Need a Green solution for detector replacement siemens Need sans to demonstrate italic cost/benefit to industry and end consumer 35 Building Technologies
36 Thank you for your attention! Siemens AG All rights reserved 36 Building Technologies
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