ISO 61340-4-4:2005 pdf download.Electrostatics -Part 4-4: Standard test methods for specific applications -Electrostatic classification of flexible intermediate bulk containers (FIBC).
5 Requirements
5.1 General remarks
A FIBC intended for use in the presence of a flammable material or in a hazardous explosive atmosphere shall not itself produce incendiary discharges. The absence of incendiary discharges shall be verified for at least the smallest and largest sizes of FIBC of a particular design by meeting one of the requirements listed in 5.2 and 5.3 when tested as manufactured, prior to usage. For the purposes of type testing where a range of outlet sizes are available. ignition testing according to 7.2 shall be carried out on test FIBC with an outlet size that is the smaller of a) (400 ± 50) mm. or b) the maximum outlet size for the type under test.
NOTE Compliance with the requirements of this standard may not extend to FIBC that have been Contaminated or d.grad.d through us.. or ar, used contrary o manufactur.ra recommendations Whet. it is intended that FIBC be used Tar multiple TllLfcleaiVempty cycles, it IS ,ecomnterl4led that teals be conducted on packages to determine the maximum number of such cycles for the products to be handled In order to ensure that end of ut. performance complies with the requirements of this clause.
5.2 RequIrements for dust envIronments wêth IgnItIon energIes gr.at.r than 3 mJ
To ensure propagating brush discharges cannot occur across the walls of a FIBC intended for use In the presence of combustible dusts but In the absence of flammable vapours or gases, it shall be constructed from materials having an electrical breakdown voltage of less than or equal to 6 kV when tested according to 7.1.
5.1 General remarks
A FIBC intended for use in the presence of a flammable material or in a hazardous explosive atmosphere shall not itself produce incendiary discharges. The absence of incendiary discharges shall be verified for at least the smallest and largest sizes of FIBC of a particular design by meeting one of the requirements listed in 5.2 and 5.3 when tested as manufactured, prior to usage. For the purposes of type testing where a range of outlet sizes are available. ignition testing according to 7.2 shall be carried out on test FIBC with an outlet size that is the smaller of a) (400 ± 50) mm. or b) the maximum outlet size for the type under test.
NOTE Compliance with the requirements of this standard may not extend to FIBC that have been Contaminated or d.grad.d through us.. or ar, used contrary o manufactur.ra recommendations Whet. it is intended that FIBC be used Tar multiple TllLfcleaiVempty cycles, it IS ,ecomnterl4led that teals be conducted on packages to determine the maximum number of such cycles for the products to be handled In order to ensure that end of ut. performance complies with the requirements of this clause.
5.2 RequIrements for dust envIronments wêth IgnItIon energIes gr.at.r than 3 mJ
To ensure propagating brush discharges cannot occur across the walls of a FIBC intended for use In the presence of combustible dusts but In the absence of flammable vapours or gases, it shall be constructed from materials having an electrical breakdown voltage of less than or equal to 6 kV when tested according to 7.1.
