1 Section 6 Fire Detection and Alarm Systems Russell Porteous Chief Executive Officer Firewize Services
2 General Information Section 6 of AS covers: Fire Detection and Alarms Systems Electrical Detection and Control Systems for: Special Hazards Systems; and Smoke Hazard Management Systems Smoke and Heat Alarms Emergency Warning Systems Emergency Intercom Systems Occupant Warning Systems
3 Precautions Prevent adversely affecting the normal operation of any system, except for those systems to be serviced. Inform responsible person on-site that activities may adversely affect the occupants or operations of the building. Inform the responsible entity of the expected duration of the impairment so that alternative safety arrangements can be implemented Notify the monitoring service provider where testing or service may cause signals to be transmitted. This could include configuring the alarm signalling equipment to test mode and confirm normal operation at completion
4 Definitions Impedance Distinctly Audible
5 Baseline Data Baseline Data Is the capturing of system design and performance requirements. For fire detection and alarm systems it should include: Systems interface diagram A statement detailing the design Standard of the system, including date of publication and any approved exceptions Documentation required by the approved design such as commissioning documentation as detailed in the relevant system design, installation and commissioning Standard Date of initial system installation. Cause and effect statement for each system interface function.
6 Baseline Data Baseline Data (cont..) System quiescent current. System full alarm current, including warning system load. Nominal battery capacity fitted. Required battery capacity. Battery manufacture date. Installation date of fitted battery. Load current of each ancillary circuit. Amplifier rated output; impedance (Ω) and power (W). Measured impedance (Ω) and power load (W) of each loud speaker circuit.
7 Routine Service Frequency and Table References System / Equipment Monthly 6 Monthly Yearly 5 Yearly Fire Detection and Alarm Systems Occupant Warning Systems Special Hazards Systems CIE Smoke Hazard Systems CIE Emergency Warning System Emergency Intercom Systems
8 Table Monthly Routine Service Schedule Fire Detection and Alarm System, Special Hazard Systems and Smoke Hazard Management Systems
12 Table Monthly Routine Service Schedule Fire Detection, Alarms and Controls for Special Hazard Systems
18 Table Yearly Routine Service Schedule Fire Detection and Alarm System, Special Hazard Systems and Smoke Hazard Management Systems
28 Table Yearly Routine Service Schedule Fire Detection and Alarm Systems
32 Table Monthly Routine Service Schedule Smoke Alarms and Heat Alarms
34 Table Yearly Routine Service Schedule Smoke Alarms and Heat Alarms
37 Table Monthly Routine Service Schedule Emergency Warning System
40 Table Yearly Routine Service Schedule Emergency Warning System
46 Table Yearly Routine Service Schedule Emergency Warning System
48 Table Yearly Routine Service Schedule Emergency Intercom Systems
53 Appendix F Battery Capacity Testing Determining Required Battery Capacity The battery capacity requirement shall be determined as follows: a) Determine the quiescent load current (IQ). b) Determine the alarm current (IA). c) Determine the capacity de-rating factor (FC) of the battery when discharged at the alarm load rate.
54 Appendix F Battery Capacity Testing Determining Required Battery Capacity The battery capacity requirement shall be determined as follows (cont..): d) The 20 h discharge battery capacity C 20 at 15 C to 30 C shall be determined as follows: where C 20 = L[(I Q T Q ) + F C (I A T A )] C 20 I Q T Q F C I A T A L = battery capacity in Ah at 20 h discharge rate = total quiescent current = quiescent standby power source time = capacity de-rating factor = total current in alarm state = alarm load standby power source time = compensation factor for expected battery deterioration. L shall be 1.25 for new batteries and 1.1 for used batteries required to perform for at least 12 months
55 Appendix F Battery Capacity Testing Battery Test Procedure The procedure shall be as follows: a) Prior to testing, ensure the battery is fully charged with the correct charging voltage. b) Set the battery testers to a discharge current of 0.8 C20/1 A (e.g. A 100 Ah battery is tested at 80 A), subtracting the system quiescent current if the test is to be carried out without disconnecting the battery from the system. c) Record the total load current used. d) Where the battery is to be tested without being disconnected from the system, isolate the primary (mains) supply just before the commencement of the battery condition test.
56 Appendix F Battery Capacity Testing Battery Test Procedure The procedure shall be as follows (cont ): e) Apply the test load for 25 min or until battery terminal voltage falls to the minimum test voltage of 21 V (for a 24 V battery set). NOTE: The battery load tester carries a large current and must be connected as close as practicable to the battery terminals. f) If the battery terminal voltage does not fall below 21 V during the 25 min period record the final test voltage and note as a pass. g) Restore the system to allow the battery to begin to be re-charged.
57 Appendix G Fire Detector Testing Test Media Smoke detectors a source of particulate material that does not contaminate the sensing chamber or entry screen and which contains particles in the size range appropriate to the detector. Heat detectors a source of heated air is the preferred medium. The temperature of the air shall be controlled to produce a predictable rate of increase. The upper temperature shall be limited to a value appropriate to the detector being tested.
58 Appendix G Fire Detector Testing Test Media Aspirating smoke detection systems Media that does not excessively contaminate, impact the test result or be of a nature that adheres to the internal surfaces of the aspirating smoke detector pipe system. Carbon monoxide (CO) detectors a source of gas that does not adversely affect the sensing element, or entry screen, of the detector and which contains gas appropriate to the detector.
59 Appendix G Fire Detector Testing Detector Testing Heat Detectors G2 POINT TYPE HEAT DETECTOR FUNCTIONAL TEST Test 20% of detectors per circuit Test last detector on a circuit (for collective circuits, the one nearest to the end of line device) Sample should include detectors that are representative of: all detector models and types or grades all environmental conditions all detectors are to be tested over a five year period For non-resettable fixed temperature detectors, simulate an alarm on the circuit at the end of line. G3 LINEAR HEAT DETECTOR FUNCTIONAL TEST For resettable linear type heat detectors, test the operation using a suitable heat source at a random location and different location from previous tests. For non-resettable fixed temperature detectors simulate an alarm on the circuit at the end of line.
60 Appendix G Fire Detector Testing Detector Testing Point Type Smoke Detectors G4 POINT TYPE SMOKE DETECTOR FUNCTIONAL TEST Test 50% of all detectors per annum on each circuit Ensure all detectors are tested over a two year period except where this requirement is satisfied under G5 G5 POINT TYPE SMOKE DETECTOR SENSITIVITY All smoke detectors shall be replaced with cleaned and calibrated or new detectors every 10 years followed by the functional test (G4); unless the sensitivity is tested or verified in accordance with G6 or G7
61 Appendix G Fire Detector Testing Detector Testing Point Type Smoke Detectors G6 POINT SMOKE DETECTOR IN SITU SENSITIVITY TEST Test sensitivity of all detectors in situ using test equipment listed and calibrated in accordance with a national or international standard Test to be conducted after 10 years from installation and then every 5 years Report all detectors that fail the test G7 SMOKE DETECTORS CAPABLE OF REPORTING OUT OF SENSITIVITY RANGE Where the sensitivity or out of sensitivity range can be indicated or read at either the CIE or at the detectors, carry out the relevant procedure in accordance with the manufacturer s instructions yearly. Report all detectors that indicate they are at the end of the manufacturer s sensitivity range.
62 Appendix G Fire Detector Testing Detector Testing Beam Type Smoke Detectors G8 BEAM TYPE SMOKE DETECTORS FUNCTIONAL TEST Test yearly the operation of each linear beam type smoke detector use neutral density light filters of the appropriate obscuration percentages for alarm and beam blockage for fault. NOTE: Where information is not available on the appropriate total obscuration then, for direct beams types, a 60% obscuration filter should be used and for reflected beam types a 30% obscuration filter. For faults, greater than 95% obscuration (opaque) should be used.
63 Appendix G Fire Detector Testing Detector Testing Aspirating Smoke Detection Systems G9 ASPIRATING SMOKE DETECTOR (ASD) TRANSPORT TIME TEST Test yearly by introducing smoke at the last sampling point on each pipe run or branch Record the transport time Verify transport time is within 10% or +/- 5s of the required time. If not: Inspect each sampling hole and clean as needed Inspect filters Verify sensitivity Inspect pipework and all sampling points G10 ASPIRATING SMOKE DETECTOR SENSITIVITY TEST Verify and record that the sensitivity calibration of the detection device is within 5% of the original calibration value
64 Appendix G Fire Detector Testing Detector Testing Failures G16 CONSEQUENCES OF FAILURE When a failure occurs - further sampling and testing of not less than 10 of the remaining detectors per circuit shall be conducted until the results can be claimed to be truly representative. If there is further failure - the balance of the detectors on the circuit shall be tested. All detectors that fail the test shall be replaced. Note: Detectors, equipment or other items that have a defined service life shall be replaced before the service life is exceeded
65 Fire Alarm Monitoring Systems Fire Alarm Monitoring Systems Maintenance requirements from Part 8 of AS have not been included in AS
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