Measurement of charge transfer during filling and emptying FIBC |
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| Authors: | Martin Glor Patrice Müller Christian Kubainsky |
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| Institution: | 1. Swiss Institute for the Promotion of Safety and Security, WRO-1055.5.23, CH-4002 Basel, Switzerland;2. University of Applied Science of Fribourg, Switzerland;1. Department of Safety, Health, and Environmental Engineering, National Yunlin University Science and Technology (YunTech), 123, University Rd. Sec. 3, Douliou, Yunlin 64002, Taiwan, ROC;2. Department of Ammunition Engineering and Explosion Technology, Anhui University of Science and Technology, 168 Taifeng Street, Huainan, Anhui 232001, China;3. School of Chemical Engineering and Technology, Xi’an Jiaotong University, 28, Xianning West Rd., Xi''an, Shaanxi 710049, China;4. Graduate School of Engineering Science and Technology, YunTech, Douliou, Taiwan, ROC |
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| Abstract: | Filling and emptying normal FIBC (flexible intermediate bulk containers) in hazardous areas represents a high electrostatic ignition hazard. Manufacturers of FIBC have therefore designed different measures to reduce the ignition risks from static electricity. Depending on the measures applied FIBC are categorized into types A, B, C and D. End of 2005 a new international standard for testing type D FIBC has been published. Type D FIBC have now to be certified according to this standard. Since this standard requires comprehensive ignition testing on a test rig especially designed for this purpose, industry is looking for a simpler test method, which can be used for the development of new FIBC fabric and in production quality control. In the present paper it is attempted to apply the method of charge transfer measurement to assess the ignition probability of static discharged from FIBC during filling and emptying and to correlate the results with the ignition tests performed on the standard test rig. |
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