The layout of detectors should account for various factors in predicting detector response to anticipated fires: Ceiling shape and surface Ceiling height (reduction factors - Configuration of contents in the protected area Combustion characteristics and probable equivalence ratio of the anticipated fires involving the fuel loads within the protected area Compartment ventilation Ambient temperature, pressure, altitude, humidity, and atmosphere
NFPA 72: foot spacing (maximum) Closest distance to a wall is 4 NFPA 72: : For smooth ceilings, all points should have a detector within a distance of.7S S= Listed spacing When a manufacturer, through its own testing and research program, publishes a specific spacing recommendation that is different from the 30 ft NFPA spacing, that spacing recommendation becomes an enforceable part of the NFPA Code.
NFPA 72: 17.6 Classifications Markings Spacing Heat detectors shall not exceed their listed spacing and there shall be a detector within 1/2 times the listed spacing at right angles all walls, partitions, etc. All points on the ceiling shall have a detector within.7 times the listed spacing (.7S) Ceiling Height reduction factors for certain types of detectors
NFPA 72: Mounting location on wall requirements Height, distance to exit Maximum travel distances
Bells Horns Chimes Strobes Speakers NFPA 72: Chapter 18 For your case study, recommend a notification system but you do not have to recommend placement of horns, strobes, etc.
Building Temp Site Water Temp Site Water Level Fire Pump Power Fire Pump Running Fire Pump Auto Position Fire Pump or Pump Controller Trouble Fire Pump Running Generator in Auto Position Generator or Controller Trouble Switch Transfer Generator Engine Running
Primary Supplies Requirements for Voltage and Amps Over current Protection Secondary Power Supply Options Second line Generators Battery
Used as a backup to primary power supply, instead of using a secondary power supply Examples: Battery
Alarm Signal Alarm Restoration Trouble Signal Trouble Signal Restoration Supervisory Signal Supervisory Restoration
Inspection Frequencies NFPA 72 establishes the frequency of inspection and testing Initial installation Monthly: Supervising station receivers (ie: DACT test signals), batteries Quarterly: Supervisory signal equipment Semi-annually Annually: Initiating devices, supervisory station equipment
NFPA has established methods for testing components of a fire alarm system Lights Fuses Power supplies Batteries Initiating devices Notification devices Transmission equipment
Service personnel shall be qualified and experienced in the inspection, testing, and maintenance of fire alarm systems. Examples of qualified personnel shall be permitted to include, but shall not be limited to, individuals with the following qualifications: (1) Factory trained and certified (2) National Institute for Certification in Engineering Technologies fire alarm certified (3) International Municipal Signal Association fire alarm certified (4) Certified by a state or local authority (5) Trained and qualified personnel employed by an organization listed by a national testing laboratory for the servicing of fire alarm systems
Fire alarm system equipment shall be maintained in accordance with the manufacturers instructions.
A set of reproducible as-built installation drawings, operation and maintenance manuals, and a written sequence of operation shall be provided to the building owner or the owners designated representative. For software-based systems, a copy of the site- specific software shall be provided to the owner or owners designated representative. The owner shall be responsible for maintaining these records for the life of the system for examination by any authority having jurisdiction. Paper or electronic media shall be permitted.
Records shall be retained until the next test and for 1 year thereafter