Fire & Gas Mapping and Detection Philosophy

Fire and gas detectors are usually placed where the pipe rack has a free flange, not where the gas will be. The course explains a performance-based approach: defining detection objectives from the hazard, selecting technologies, setting coverage targets, mapping geographic and scenario coverage on the plot plan, and deciding voting, alarm and executive actions. Participants produce a coverage map and a philosophy outline for one of their own areas.

• Write an F&G philosophy that states what the system is for and what it must achieve
• Select flame, point gas, open-path and acoustic detectors for the hazard and environment
• Set coverage targets and assess geographic and scenario-based coverage
• Position detectors using dispersion and fire modelling rather than rules of thumb
• Define voting, alarm and executive-action logic and their effect on availability
• Assess an existing installation and prioritise improvements