Applications of intrinsic safety characteristic parameters of propellant dust: Commercial multi-tube pyrotechnic hazard assessment |
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| Institution: | 1. College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China;2. Department of Safety, Health and Environmental Engineering, National Yunlin University of Science and Technology (YunTech), Douliou, Yunlin 64002, Taiwan;1. Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 80778, Taiwan;2. Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 University Road, Hsinchu, 30010, Taiwan;3. Department of Chemical Engineering and Materials Engineering, National Yunlin University of Science and Technology, Yunlin, 64002, Taiwan;1. Fujian Provincial Key Laboratory of Functional Materials and Applications, Institute of Material Preparation and Applied Technology, School of Materials Science and Engineering, Xiamen University of Technology, PR China;2. Institute of Materials Science and Engineering, National Central University, Taiwan;3. Department of Chemical Engineering and Materials Engineering, National Yunlin University of Science and Technology, Taiwan;4. Department of Chemical and Materials Engineering, National Central University, Taiwan;5. Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, United States;1. Air Force Institute of Technology, Nigerian Air Force, Nigeria;2. Energy Research Institute University of Leeds, Leeds, United Kingdom |
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| Abstract: | Fireworks are widely used in festivals around the world, but the safety issue during preparation the manufacture, storage, and operation of pyrotechnics has also been highly valued. Human operation error and insufficient recognition of the safety characteristics of pyrotechnics are the main factors in pyrotechnic incidents in Taiwan. This study considers thermal and explosion safety by electrostatic sensitivity, minimum ignition temperature, and explosion characteristics of propellant dust in commercial multi-tube pyrotechnics. The results show that propellant dust is not sensitive to static electricity, but it was ignited at 260 °C environment temperature. The lower explosion limit of propellant dust was 125–150 g/m3, which provided an effective control of the dust concentration in the workplace. It was also found that the explosive level of the propellant dust belonged to St-1, which is exceptionally close to St-2 explosion influence, and that cannot be ignored. The high temperature associated with the explosion reminded that after the firework is launched, it should be cooled before leaving. Combining the above results, this research suggests the environmental operation temperature and dust concentration should be controlled within a safer range to effectively avoid the occurrence of dust fire or explosion and substantially enhance the safety of the pyrotechnic industry. |
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| Keywords: | Fireworks Pyrotechnic incidents Electrostatic sensitivity Minimum ignition temperature Explosion characteristics |
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