COMMERCIAL FIRE SYSTEMS

• Sprinkler Hydrostatic Rough-In
  • Determine that all underground piping has been flushed prior to connecting to the system.
  • Ensure that system riser is installed in accordance with the approved plans, and that all valves and gauges are readily accessible.
  • Ensure there are pressure gauges above and below each alarm check valve.
  • Ensure that control and sectional valves are of the indicating type and are supervised open.
  • Ensure that water flow alarm devices are installed and tested (activation within 60 seconds).
  • Ensure that tamper switch devices are installed and tested.
  • Ensure that all control, drain, and test valves are identified with permanently marked signs.
  • Ensure that the Fire Department connection utilizes a listed check valve and that there is no shut off valve in the Fire Department connection piping.
  • No plants or vegatation within 5 ft. of the center of the Fire Department Connection.
• General Grid:
  • Ensure that the system is protected from freezing.
  • Determine that the sprinkler system is installed to allow it to be drained through the main drain valve, or is provided with auxiliary piping and drains where impractical.
  • Ensure that the sprinkler system piping and fittings are of the approved type, meets approved schedules, is supported by approved hangers which are properly spaced and are installed in accordance with the approved plans.
  • Ensure that the entire system sprinklers are installed in accordance with their listing and have been spaced not to exceed their maximum protection area.
  • Ensure that the sprinkler location and the position provide satisfactory distribution as it relates to beams, columns, bulkheads, skylights, etc., and to the HVAC, plumbing, and electrical equipment and fixtures. The minimum allowable distance of sprinkler to a wall is 4 inches. The minimum allowable distance between sprinklers is 6 foot (8 foot for large drop or extended coverage type sprinklers).
  • Ensure that the sprinkler deflectors are parallel to the ceiling.
  • Ensure that the hydrostatic test holds a minimum of 200 psi or 50 psi above static pressure for a minimum of 2 hours.
  • Check for leaks.

Sprinkler Final Inspection

• Ensure that system riser is installed in accordance with the approved plans, and that all valves and gauges are readily accessible.
• Ensure there are pressure gauges above and below each alarm check valve.
• Ensure that control and sectional valves are of the indicating type and are supervised open.
• Ensure that water flow alarm devices are installed and tested (activation within five minutes).
• Ensure that tamper switch devices are installed and tested.
• Ensure that all control, drain, and test valves are identified with permanently marked signs.
• Ensure that the Fire Department connection utilizes a listed check valve and that there is no shut off valve in the Fire Department connection piping.
• Ensure there are no fewer than 6 spare sprinkler and a wrench provided.
• Ensure that protective guards/shields are provided to sprinklers, if needed.
• Ensure that hydraulic data name plate is provided on system(s).
• Record main drain flow test information on permit, i.e., record static pressure ______psi. Record residual pressure with the valve open _______psi.
• If the sprinkler system is to be monitored, then one horn/strobe and one pull station shall be installed.
• Dry pipe systems require two 24 hour air tests prior to final.
• Escutcheons shall be in place in offices, bathrooms, closets and the like.

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