APPLICATION & EFFECTIVENESS OF FIRE & GAS MAPPING ASSESSMENT IN HYDROCARBON INDUSTRY

Abstract

The Abstract is intended for the application of Fire & Gas detectors and the effectiveness of placing the
detectors with the help of three dimensional Fire & Gas Mapping Software. The following are the significant steps that
will help improving the detector coverage.
The Fire and Gas mapping study to be carried out based on geographic coverage assessment type for both fire detection
and gas detection. Detector coverage review to be first performed on the existing F&G detector location (Here existing
F&G location means the detectors that were placed without performing mapping exercise). The coverage maps from the
Fire and Gas mapping of the existing F&G detector location to be compared against the performance target criteria for
an assessment of adequacy. Wherever the detector coverage targets are not achieved, the location to be modified until
the specified performance target are achieved. Design changes typically include relocating or adding detectors and
changing detector technology.
For the existing F&G detectors which were already installed in the field, varying the elevation and orientation of the
existing detectors to be given preference over all other modifications. Detector placement shall also be to be governed by
constructability and maintainability point of view. This means taking into account the location of structural steel and
other obstructions for mounting detectors, as well as ensuring that detectors are not placed in front of potential
interferences, e.g. heat exchanger tube bundles, flare stacks, or other equipment items that may confuse the detectors.