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Leading The World! The Ministry Of The Interior’s New Patented Fire Scenarios Smoke Generator Helps Inspect Fire Safety Designs

  • PostDate:2020-11-08 09:00

In order to help prevent fire in large public spaces, the Architecture and Building Research Institute of the Ministry of the Interior (MOI) has recently developed a device of smoke generating system. The system generates plumes of smoke in response to different fire scenarios, and the quantitative data obtained from the fire including the smoke volume, flow rate, concentration, and smoke layer falling rate is collected for verification. In 2019, 2 utility patents were attained, and the system has been applied for inspecting the smoke control design in 10 stations, platforms, and tunnels on the Kaohsiung Subway. In the future, the MOI will actively cooperate with public and private sectors to help with fire safety designs.

The MOI states that thick smoke in fires is the most crucial factor that endangers lives. 70% of fire victims are likely to be killed by high-temperature gases and smoke which obstruct escape as well as causing choking. Based on that, large public buildings with extremely dense crowds and complex buildings such as airports, MRT stations, large shopping centers, and stadiums require effective smoke flow control to ensure smooth escape from a fire before the smoke reaches dangerous levels.

At the moment, this type of on-site verification method of the performance design is conducted based on Australian Standard AS4391 (or CNS 15937 standard). However, this method can only show the smoke flow direction and does not quantitatively verify the accuracy of the performance design.

In order to address the defect, after many years of extensive research carried out by the Architecture and Building Research Institute, a smoke control verification system was developed. The system has a programmable fire source and smoke generating equipment as well as fire source generating devices for fires in buildings. Corresponding smoke flow can be generated for different fire scenarios to help obtain quantitative data including smoke volume, flow rate, concentration, and smoke layer descending rate. The system can effectively check for smoke storage and natural and mechanical smoke evacuation performance on the roofs of large spaces, and the data is then used as the basis for engineering verification or improvement.

The MOI pointed out that the internationally leading verification system researched and developed by the Architecture and Building Research Institute attained 2 utility patents last year including “Controllable Smoke Flow Rate and Density Smoke Generation System for High-Temperature Smoke Tests” and “Fire Source Generation Device in Building Fires.” Smoke generation calibration methods and procedures have also been formulated to ensure accuracy upon application. The system has been applied in 10 stations, platforms, and tunnels on the Kaohsiung Subway for on-site hot smoke tests to verify whether the design meets the requirements of fire and evacuation performance.

In an effort to further promote the use of the system, the Architecture and Building Research Institute is currently putting together a “Performance Design and Application Manual of Smoke Control System in Large Buildings” which is due to be published at the end of 2020. The manual can be adopted and applied by various evaluation institutions for review, fire authorities for inspection, and major construction projects for acceptance to jointly ensure safety in large public places.

Programmable and quantifiable control of flir source and smoke generating device

Comparison of on-site hot smoke test and computer simulation smoke layer falling time