Mastering Fundamentals of 3D Fire and Gas Mapping

Understand why a fire and gas mapping study is essential to prevent escalation of leaks or fires in onshore and offshore facilities, aided by mitigation systems.

Conduct a fire and gas mapping study in the basic design and field engineering stages, then review in the EPC stage to ensure detector coverage targets are met.

Define the objective of a fire and gas mapping system: provide early, reliable detection of fire and gas hazards wherever events occur, enabling evacuation and extinguishment or containment of fire.

Discover leading 3D fire and gas mapping software, including detect 3D maps, 3D, and Fiji, plus in-house tools from clients and universities.

Identify documents for a 3D fire and gas mapping study, including a 3D CAD model, plot plans, hazardous area classifications, FRG layouts, cross-flow diagrams, and detector performance criteria.

Learn three rules of thumb for flame detector placement in 3D fire and gas mapping: mount opposite for line of sight, assume 180-degree coverage, and install at twice object height.

3D mapping optimizes detector placement for a 25 kilowatt pool fire, reducing detectors from 18 to 12 while maintaining alarm and action coverage, showing relocation mitigates over and under engineering.

Categorize fire and gas zones by hazard and occupancy characteristics. Subdivide facilities into zones for easy identification in the flag layout, guiding operators on actions during a fire.

Master voting logic in fire and gas mapping: two out of three detectors trigger actions, while one out of NW covers alarms and two out of NW handles executive actions.

Explore flame detection mapping in 3D fire and gas systems, showing detector field of view and green, blue, red contours that trigger alarms and executive actions.

Calculate the effective viewing distance from x, f1, and f2. Apply a 90-degree cone of vision and the inverse square law to place detectors for different risk levels.

Map gas detection with point and open detectors in a grid, modeling clouds of 4–10 m diameters. Set LFL targets at 20% and 50%, with alarms at 10% and 40%.

Identify a leak scenario, insert layout into 3D fire and gas mapping software, place flame and gas detectors to meet performance targets, and optimize quantity and arrangement to achieve target.

Explore how flame, heat, and gas detectors are applied in oil and gas facilities, emphasizing careful placement, detector quantity, and cost-driven selection across wellhead areas, manifolds, and turbine enclosures.