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Fire and gas detector location / mapping study

This is a study which helps to decide the location of fire and gas detectors in the installation. Dispersion analysis with mapping study methodology is used to decide the no of detectors, location of detectors and type of detectors required in the facility.

Major steps involve –

  1. Collection and Study of data which includes 3D model
  2. Gas dispersion simulation
  3. Selection and finalisation of Performance Targets
  4. Verifying the location of Fire and Gas detection (Combustible Gas and flame detector) quantity and mounting height.
  5. Finalisation of detector locations

Fire/ Flame detection mapping must necessarily be performed fully considering three-dimensional attributes of the space, the cone of visions of the fire detector, and the vision obstruction caused by physical objects in the area.

Preferred Software – Detect 3D developed by Insight Numerics, USA

The output of detection coverage assessment performed by Detect 3D is colour coded map (coloured detection coverage overlays at elevation of interest) of assessed Zone in addition to table where the coverage is calculated in terms of percentages. Percentages are provided for the monitored areas that have no coverage, one detector coverage or two or more detector coverage. These results then used to compare achieved coverage versus target coverage.