The Study of Fire Performance- Based Design on Desmoke System and Evacuation Assessment in Clean Room
|關鍵字:||無塵室;下排煙系統;最經濟排煙系統規劃;平行處理;性能式設計;Clean Room;desmoke system;The most economic smoke control;MPI;Performance- Based Design|
In Taiwan, the success of the Wafer fabrication and TFT -LCD panel high-tech industry plays a very crucial role in economic growth in the past few years. The wafer or panel sizes are larger and larger that not only the structures of the clean room become more complicated but also the fire protection system become more difficult to comply with the fire codes. This research firstly is aimed with the special features of cleanroom to discuss the reason why their structures are not easy to comply with the fire/building codes and the shortcomings if the cleanroom design indeed complies with the codes. In addition, a provision of the corresponding codes and standards used by the other countries is given for the reference of the authorities of jurisdiction. After that, this study adopts the Fire Performance-Based Design for the case studies of two cleanoom’s fire safety designs. The main purpose is to make the proper and equivalent substitutions for the requirements of prescriptive codes. In case 1, the cleanroom uses the downward smoke exhaust system instead of the traditional upward one because Automated Guided Vehicle, which passes through smoke/fire partitions, is used to transport the wafers. In case 2, the cleanroom is built but not in use. Therefore, the owner intends to uses the least number of desmoke dampers and related equipments to satisfy the performance required by codes and to lower down the cost. FDS with parallel computation capability and SIMULEX are used to simulate and evaluate the fire safety designs. From the simulation results, both designs can satisfy the safety requirement for occupant evacuation, and they are successful to replace the article 188 of fire code for the requirements of fire safety equipments. to discuss the cases and find some results. Except that, reducing the speed of FFU incorporation with the downward desmoke system can provide a better condition for evacuation than that closing the FFU in case 1. In case 2, the designed minimal number of demoke dampers indeed can save more money than the one required by prescription codes.
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