Fire alarm -_internal[1]

775 views

Published on

Published in: Business
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
775
On SlideShare
0
From Embeds
0
Number of Embeds
9
Actions
Shares
0
Downloads
46
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide
  • <number>
    We will answer all these questions in this presentation.
    The questions will be repeated at the end.
  • <number>
    Developing fire condition:
    temperature rise
    rate of temperature rise
    combustion products.
  • <number>
    Developing fire condition:
    temperature rise
    rate of temperature rise
    combustion products.
  • <number>
  • <number>
    A standpipe system allows large volumes of water to be brought to any floor of a building to supply firefighters’ hose lines.
  • <number>
    We will focus on Fire Alarm and Detection System during this presentation.
  • <number>
    Initiating devices sense the effects of a fire or are manually activated by personnel, resulting in a signal to the fire alarm panel.
    Fire Alarm Control Unit (Panel) – provides required functions, and has inputs and outputs.
    Fire safety control device- detects a condition in fire protection systems which is not normal and could prevent the fire protection from functioning as intended in the event of a fire. Ex. Closed valve which controls the water supply to a fire sprinkler system.
  • <number>
    Fire alarm systems have devices connected to them to detect fire/smoke
  • <number>
    Pull station can be single action vs. double action, describing how the alarm is activated.
  • <number>
    An automatic device that senses the visible or invisible products of combustion (typically senses fire conduction prior to ignition).
    Smoke detector are “zoned” to pinpoint the location of the fire
    Duct detectors are in installed in the heating and air conditioning ductwork. If a duct detector senses smoke, the duct detector shuts down the building’s heating and air conditioning system to stop the spread of smoke to other areas.
    Types
    Ionization-
    Photoelectric-
    Light beam-
    Duct-
  • <number>
    A detector that senses heat produced by burning substances. (Generally fire/flame is already present)
    Rate-of-Rise (ROR) heat detectors react to the sudden change or rise in ambient temperature from a normal baseline condition. A typical alarm sound when the rate of temperature rise exceeds 12º to 15ºF (6.7º to 8.3ºC) per minute.
    Ambient temperature also referred to as room temperature (18º C to 23º C) (64º F to 73º F)
    Heat detectors will be specified in area that smoke detectors will not perform well, such as a cold unheated warehouse or dusty areas.
    CO detectors can alarm people about faulty fuel burning devices.
  • <number>
    Fire alarm systems have devices connected to them to detect fire/smoke
    Notification Appliances
    Sound (audible signals) – 45dB to 120dB for human hearing
    Light (visible signals) – 1 to 2 flashes
    Located ……
    Colors…..
  • <number>
    Refers to the panel that displays the status of the monitored fire protection systems and devices.
    It is not the fire alarm control unit; however, the control panel may include an annunciator.
    Annunciators usually display where in the building an alarm originates. It may also indicate the type of device.
  • <number>
    Refers to the panel that displays the status of the monitored fire protection systems and devices.
    It is not the fire alarm control unit; however, the control panel may include an annunciator.
    Annunciators usually display where in the building an alarm originates. It may also indicate the type of device.
  • <number>
    Refers to the panel that displays the status of the monitored fire protection systems and devices.
    It is not the fire alarm control unit; however, the control panel may include an annunciator.
    Annunciators usually display where in the building an alarm originates. It may also indicate the type of device.
  • <number>
    Fire alarm systems have devices connected to them to detect fire/smoke
  • <number>
    Fire alarm systems have devices connected to them to detect fire/smoke
  • <number>
  • <number>
    Many types of occupancies. We will focus on Mercantile and Covered Mall.
  • <number>
    IBC Figure 907.2
    Threshold requirements for when a manual fire alarm system is required based on the occupancy group.
    Although the requirement for manual pull stations may not apply (e.g. sprinkled buildings), alarm and occupant notification may still be required.
    Mercantile square footage of the entire mercantile occupancy must be used for this calculation, unless individual tenants are separated by a 2 hour fire barrier, or fire barriers are located to limit the square footage.
    Example: Using an 80% to 20% ratio of sales area to stock area, the maximum floor area of a tenant requiring a manual fire alarm system is 18,000sf, and a 100% sales area is 15,000sf.
  • <number>
    Refer to IBC Figure 907.2
    Threshold requirements for when an automatic fire detection system is required based on the occupancy group.
  • <number>
    Threshold requirements for when an annunciation fire is required based on the occupancy group.
    Mercantile square footage of the entire mercantile occupancy must be used for this calculation, unless individual tenants are separated by a 2 hour fire barrier, or fire barriers are located to limit the square footage.
    Example: Using an 80% to 20% ratio of sales area to stock area, the maximum floor area of a tenant requiring a manual fire alarm system is 18,000sf, and a 100% sales area is 15,000sf.
  • <number>
    Answer questions
    1. Fir alarm is a component within the fire protection system
    2.
    3.
  • Fire alarm -_internal[1]

    1. 1. MEP Fundamentals Fire Protection System
    2. 2. MEP Training Fire Protection System Examples of questions to be answered: 1. What is the difference between fire protection and fire alarm? 2. What are the differences in occupancies? 3. When is a fire alarm system required?
    3. 3. MEP Training Fire Protection System DEFINITONS Manual Fire Alarm System Consists of components and circuits arranged to monitor and annunciate the states of manual fire alarm boxes or supervisory signal initiating devices Initiates the appropriate annunciation response to these signals
    4. 4. MEP Training Fire Protection System DEFINITIONS Automatic Fire Alarm System Provides emergency functions without the necessity of human intervention Activates as a result of detecting a developing fire condition
    5. 5. MEP Training Fire Protection System Fire Protection System can consist of: Automatic Sprinkler Systems Standpipe Systems Fire Alarm and Detection Systems Central Station Monitoring
    6. 6. MEP Training Fire Protection System SUPERVISORY DEVICES Tamper switch OS & Y valve Butterfly valve with indicator paddle and integral tamper switch Supervisory indication at the Fire Alarm Control Panel, and Trouble Signal.
    7. 7. MEP Training Fire Protection System Supervisory Signal & Initiating Devices • • • • Tamper switch OS&Y valve Flow switch Butterfly valve with indicator paddle & integral tamper switch
    8. 8. MEP Training Fire Alarm System A Fire Alarm and Detection System is an active fire protection system that detects fire or the effects of fire. It notifies: Occupants Surrounding area Fire service The system controls and monitors all the fire alarm components.
    9. 9. MEP Training Fire Alarm System Fundamental Design  Initiating Devices  Manual  Automatic  Occupant Notification Devices  Visual  Audible   Emergency Voice Alarm Communicator System (EVAC) Tenant Fire Alarm Systems  Annunciators  Initiating Devices  Notification Devices  Facility (Landlord) Fire Alarm Control  On-site  Off-site
    10. 10. MEP Training Fire Alarm System INITIATING DEVICES Results in activation of Fire Alarm System annunciation devices Manual pull stations Smoke detectors; duct or area Water flow switches Rate-of-Rise and Heat detectors Carbon monoxide detectors
    11. 11. MEP Training Fire Alarm System Manual pull stations
    12. 12. MEP Training Fire Alarm System Smoke detectors Area Duct
    13. 13. MEP Training Fire Alarm System Water Flow Switch & Valve supervisory Switches OS&Y or other indicating valve (SUPERVISORY) Double check valve Fire department connection 1 Flow switch (INITIATING) Tamper switch (SUPERVISORY) Fire department check valve (SUPERVISORY)
    14. 14. MEP Training Fire Alarm System Rate-of-Rise and Heat detector Carbon Monoxide detector
    15. 15. MEP Training Fire Alarm System OCCUPANT NOTIFICATION DEVICES Use audible and visible alert    Horns Strobes Bells Emergency Voice Alarm Communications (EVAC) systems   Speakers Strobes
    16. 16. MEP Training Fire Alarm System EMERGENCY VOICE ALARM COMMUNICATION SYSTEM (EVAC) Pre-alert tone followed by prerecorded message directing the occupants Usually found in large facilities like Covered Malls Speakers are automatically activated by the fire alarm system
    17. 17. MEP Training Fire Alarm System A standard recorded annunciation message is: Attention. Attention. Attention. An emergency situation has been detected in the building. Proceed to the nearest exit and leave the building. Do not re-enter the building until directed to do so by the proper authorities. Custom recorded annunciation messages can be provided for specific applications. Announcement applications might include instructions concerning Weather Alerts, Bomb Threats and any other Emergency Evacuation.
    18. 18. MEP Training Fire Alarm System TENANT FIRE ALARM SYSTEMS Annunciators Provides status information about a circuit, condition or location within leased space Non-proprietary-furnished and installed by tenant, may be of any manufacturer Alarm condition activates Facility (Landlord) Fire Alarm Control Panel as a separate zone Alarm condition activates tenant notification devices within leased space Required in tenant leased spaces over 17,000sf
    19. 19. MEP Training Fire Alarm System TENANT FIRE ALARM SYSTEMS Manual and Automatic Initiating Devices Provide activation of tenant fire alarm system annunciator Non-proprietary-furnished and installed by tenant, manufacturer compatible with tenant fire alarm system annunciator Required in Tenant Leased Spaces over 17,000sf
    20. 20. MEP Training Fire Alarm System TENANT FIRE ALARM SYSTEMS Notification Devices Provide notification of alarm condition within tenant leased space Non-proprietary-furnished and installed by tenant, manufacturer compatible with tenant fire alarm system annunciator Powered from tenant fire alarm system Required in Tenant Leased Spaces over 17,000sf
    21. 21. MEP Training Fire Alarm System CENTRAL STATION A supervisory station where alarm signals are transmitted to, recorded in, and maintained by a firm or business approved to furnish and monitor supervised fire alarm systems.
    22. 22. MEP Training Fire Alarm System MAIN FACILITY(LANDLORD) FIRE ALARM CONTROL Control Panel Power supply Wiring Fire safety control devices Indicates detailed information of Landlord alarms and monitors Tenant Fire Alarm Systems
    23. 23. MEP Training Fire Alarm System Power Supply Primary supply  Commercial light and power Secondary Supply  Usually sealed, lead-acid batteries  Generators (under strict rules) Wiring  Carries data information Fire safety control devices  Detects abnormal conditions within system
    24. 24. MEP Training Fire Alarm System Codes: International Building Code (IBC) International Fire Code (IFC) International Mechanical Code (IMC) National Fire Protection Association (NFPA 72)
    25. 25. MEP Training Fire Alarm System Examples of types of occupancies: Assembly (A) Business (B) Covered Mall Mercantile (M)
    26. 26. MEP Training Fire Alarm System SUMMARY OF MANUAL FIRE ALARM THRESHOLD Occupancy Threshold Occupant Density Assembly (A-1, A-2, A-3, A-5) All, with occupant load ≥300 5 ft²/person where standing Business (B) Total occupant load of ≥ 500 ≥ 100 above/below level of exit discharge. Mercantile (M) Total occupant load of ≥ 500 ≥ 100 above/below level of exit discharge. 18,000sf for 80/20% sales/warehouse ratio Covered Mall (Special) 15,000sf for 100% sales area Not required 15 ft²/person where tables and chairs 100 ft²/person 30 ft²/person sales 300 ft²/person stock
    27. 27. MEP Training Fire Alarm System SUMMARY OF AUTOMATIC FIRE DETECTION THRESHOLD Occupancy Threshold Occupant Density Assembly (A-1, A-2, A-3, A-5) Not required N/A Business (B) Not required N/A Mercantile (M) Not required N/A Covered Mall (Special) Not required N/A
    28. 28. MEP Training Fire Alarm System SUMMARY OF ANNUNCIATION FIRE THRESHOLD Occupancy Threshold Occupant Density Assembly (A-1, A-2, A-3, A-5) All, with occupant load ≥300 required for occupant evacuation. Occupant load ≥ 1000 voice/alarm communications system required. 5 ft²/person where standing Business (B) Mercantile (M) All, Total occupant load of ≥ 500 ≥ 100 above/below level of exit discharge, for occupant evacuation. All, Total occupant load of ≥ 500 ≥ 100 above/below level of exit discharge, for occupant evacuation. 18,000sf for 80/20% sales/warehouse ratio Covered Mall (Special) 15,000sf for 100% sales area Square foot > 50,000 voice/alarm communications system required. 15 ft²/person where tables and chairs 100 ft²/person 30 ft²/person sales 300 ft²/person stock
    29. 29. MEP Training Fire Alarm System Examples of questions answered: 1. What is the difference between fire protection and fire alarm? 2. What are the differences in occupancies? 3. When is a fire alarm system required?

    ×