Fire and Gas Detector Mapping is a specialized engineering study used to evaluate and optimize the placement and effectiveness of fire and gas detection systems within industrial facilities. The objective is to ensure that hazardous releases are detected promptly and reliably, enabling timely mitigation actions such as shutdown, isolation, or emergency response.
Traditional detector placement based on rule-of-thumb or spacing guidelines may not provide adequate coverage, especially in complex environments with congestion, ventilation effects, and multiple release scenarios. Detector Mapping uses advanced simulation and coverage analysis techniques to provide a performance-based assessment of detection systems.
PNA Risk Management performs Fire and Gas Mapping using internationally recognized methodologies, including performance-based approaches such as those outlined in ISA TR84.00.07 and industry practices adopted in major hazard facilities.
Our studies evaluate:
- Gas detector coverage for flammable and toxic releases
- Fire detector coverage for flame and heat detection
- Detection effectiveness under varying release scenarios
- Impact of obstructions, congestion, and ventilation
- Probability of detection and coverage efficiency
Using advanced modeling tools, we simulate gas dispersion and fire scenarios to determine whether detector placement achieves the required detection targets. The analysis ensures that critical areas are adequately protected and that detection systems are optimized for reliability and response time.
The outcome includes detailed coverage maps, detection performance metrics, and engineering recommendations for improving system effectiveness.
Fire and Gas Detector Mapping is essential for high-risk facilities such as oil & gas plants, LNG terminals, petrochemical complexes, and storage terminals, and is often required to demonstrate compliance with CIMAH Safety Reports, QRA assumptions, and international safety expectations.
