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Using fire dynamics simulator to reconstruct a hydroelectric power plant fire accident.
Jen-Hao Chi1, Sheng-Hung Wu, Chi-Min Shu
1Department of Fire Science, Wu Feng University, 117 Jianguo Rd, Sec 2, Minsyong, Chiayi 62153, Taiwan. chi.jen-hao@wfu.edu.tw
Journal of Forensic Sciences
|August 23, 2011
Summary
Hydroelectric power plant fires pose significant risks. Fire simulation revealed escape times are dangerously short, highlighting the urgent need for improved safety measures in power plant fire evacuation.
Area of Science:
- Fire Safety Engineering
- Risk Assessment in Industrial Facilities
- Computational Fluid Dynamics (CFD) Modeling
Background:
- Hydroelectric power plants present unique fire risks due to their location and operational hazards.
- Transformer oil fires, with high heat release rates (11.5 MW/m²), can rapidly escalate, endangering occupants.
- Previous incidents indicate serious casualties, necessitating a detailed analysis of fire dynamics and escape routes.
Purpose of the Study:
- To reconstruct a fire incident at the Taiwan Dajia-River hydroelectric power plant using fire dynamics simulation (FDS).
- To analyze the impact of key fire hazard factors (temperature, radiant heat, CO, O2) on escape routes.
- To determine simulated safe escape times and compare them with actual evacuation durations.
Main Methods:
- Utilized the Fire Dynamics Simulator (FDS) software to model the transformer oil fire scenario.
- Calculated the heat release rate of transformer oil at 11.5 MW/m² for accurate simulation input.
- Monitored variations in temperature, radiant heat, carbon monoxide, and oxygen levels along the escape route.
Main Results:
- Simulated safe escape times were significantly shorter than the actual evacuation time (302 sec).
- Calculated escape times ranged from 155 sec (radiant heat) to 260 sec (carbon monoxide).
- Fire dynamics simulation confirmed the severe hazard posed by fire conditions to occupant safety.
Conclusions:
- The study underscores the inadequacy of current escape options in hydroelectric power plant fires.
- Urgent improvements in evacuation strategies and safety protocols are required for such facilities.
- CFD modeling is a valuable tool for assessing fire risks and validating safety measures in industrial settings.
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