Fire & Gas Mapping Audit (F&G)
Specialised evaluation of flame, smoke, combustible gas, and toxic gas detector coverage to identify detection blind spots and optimize sensor placement.
Purpose of the assessment or study
To assess whether existing or proposed optical flame detectors and gas sensors provide adequate geographic and scenario-based coverage to detect hazardous releases before escalation.
Applicable facility types
Hydrocarbon processing units, solvent storage tank farms, gas bottling terminals, battery storage facilities, chemical warehouses, and offshore/onshore pipeline manifolds.
Proposed study scope
Review of detector technologies (IR3, UV/IR flame detectors, catalytic, electrochemical, and open-path infrared gas detectors), coverage mapping, alarm setpoints, voting logic, and ventilation airflow effects.
Scope is structured as a technical proposal framework for client review and adjusted to your facility layout.
Methodology overview
Analysis of hazardous area classification drawings, review of potential leak points and target gas cloud sizes, assessment of detector field of view (FOV) and physical obstructions, and evaluation against ISA-TR84.00.07 performance-based standards.
Client inputs and site visit arrangements
Information required from client
Hazardous area classification drawings, 3D equipment layouts or plant elevation drawings, detector datasheets, cause-and-effect alarm matrices, and prevailing wind data.
Site visit arrangements
Physical site survey to verify optical line-of-sight obstructions, field detector mounting heights, vibration sources, and prevailing air currents.
Indicative deliverables
Fire & Gas Mapping Audit report, detector coverage assessment summary, identification of blind zones, sensor relocation or addition recommendations, subject to agreed scope.
Frequently asked questions
What standard is followed for Fire & Gas mapping?
Related assessment services
Electrical Risk Assessment
A thorough technical evaluation of electrical infrastructure, distribution networks, switchboards, earthing systems, and operational practices to identify shock, fire, and flashover hazards.
Fire Risk Assessment
A comprehensive assessment of facility fire ignition sources, fuel loads, means of escape, compartmentation, detection systems, and emergency fire-fighting arrangements.
Fire Load Calculation
Engineering assessment and quantitative calculation of the total heat energy that would be released by combustible materials in a defined building space or industrial compartment.