IEC 61340-4-4:2005

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• Electrostatics - Part 4-4: Standard test methods for specific applications - Electrostatic classification of flexible intermediateulk containers (FIBC)

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  Describes procedures for evaluating the ignition risk presentedy electrostatic discharges from FIBC to flammable or explosive environments. The requirements of this standard are applicable to all types of FIBC, tested as manufactured, prior to usage, intended for use without liners in flammable or explosive environments with minimum ignition energy of more than 0,14 mJ, and where the charging currents do not exceed 3,0 A. NOTE 0,14 mJ is the minimum ignition energy normally quoted for methanol. Although more sensitive materials exist, methanol has the lowest minimum ignition energy of any material that is likely toe present when FIBC are emptied. 3,0 uA is the highest charging current likely toe found in common industrial processes. This combination of minimum ignition energy and charging current represents the most severe conditions that mighte expected in practice. Compliance with the requirements of this standard does not mitigate the need for full risk assessment. The test methods

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