Conductive Bulk Bags | Safe Ignition Protection Against Static in Hazardous & Explosive Atmospheres
Published 18 Mar 2021
Conductive bulk bags (anti-static / type C)
Safe Protection Against Ignition Hazards
Original Article By BSFL Packaging
BSFL Packaging offer a range of FIBC Bulk Bags manufactured and designed to manage the occurrence of static electricity safely during FIBC filling and emptying operations, which is a critical concern for many industries.
As bulk bags are made from polypropylene, an electrically insulating material, they are prone to the build up of static electricity as friction and separation occur during filling and discharging of the products.
When filling and emptying the FIBC with a bulk product, a combustible dust arises inside the FIBC. Thus when filling and emptying the FIBC in hazardous areas with explosive atmospheres, a reliable protection against the risk of electrostatically induced ignitions is essential.
BSFL Packaging’s range of Conductive Type C Anti-Static Bulk Bags is designed for use with materials and in locations where it is essential to avoid the risks of electrostatic ignitions during handling.
BSFL Packaging offers the entire range of protective measures for the safe handling of FIBCs in hazardous areas. There are four types of FIBC in use differentiated by their ability for charge dissipation and/or limiting the energy of possible discharges. The four types of FIBC are explained below:
Type A FIBC
As there is no static protection provided by Type A FIBC, it is essential that they are not used to store or transport combustible materials or used in flammable or combustible environments.
FIBCs made from non-conductive materials without any measures against electrostatic charging therefore grounding and charge dissipation is hardly possible.
Do not use Type A FIBCs in the presence of flammable vapours or gases
Type B FIBC
FIBCs are made from materials that have a low breakdown voltage to prevent the occurrence of high energy propagating brush discharges (PBD).
This FIBC has a breakdown voltage not exceeding 6 kV which reliably prevents the ignition of explosive dust atmospheres. Type B FIBCs can be used in the presence of combustible dusts with ignition energies > 3 mJ.
Do not use Type B FIBCs in the presence of combustible dusts with ignition energies ≤ 3 mJ.
Do not use Type B FIBCs in the presence of flammable vapours or gases
Type C FIBC
FIBCs normally made of non-conductive fabric with interwoven conductive threads forming either a reliably interconnected grid of max. 50 mm mesh size or if the threads are in one direction only, a distance between each thread of less than 20 mm.
The breakdown voltage does not exceed 6 kV. Type C FIBCs can be used in the presence of combustible dusts and in the presence of flammable gases or vapours with ignition energies ≥ 0,14 mJ.
Type D FIBC
FIBC made usually from non-conductive fabric containing conductive threads or filaments which are not interconnected. Charge dissipation occurs into the surrounding of the FIBC via corona discharge.
Earthing of the Type D FIBC has only a minor effect on charge dissipation and is not required. Type D FIBCs can be used in the presence of combustible dusts and in the presence of flammable gases or vapours with ignition energies ≥ 0,14 mJ.
Use of Different Types of FIBC Conductive Bulk Bags
|MIE of dust
(Minimum Ignition Energy)
|Non-flammable atmosphere||Explosive dust atmosphere||Explosive gas and
|MIE > 1000 mJ||A,B,C,D||B,C,D||C,D|
|1000 mJ > MIE > 3 mJ||B,C,D||B,C,D||C,D|
|MIE < 3 mJ||C,D||C,D||C,D|
About BSFL Packaging
As a small family run company we go the extra mile to provide our customers with the highest standards of service, product quality and cost effective flexible packaging solutions.
Being a small established company allows us to respond quickly and efficiently to the packaging needs of existing and new customers, in the UK and Internationally.
We supply bulk bags into various market sectors which include the Food, Pharmaceutical, Building, Chemical, Agriculture, Horticulture, Forestry and Offshore Technology industries.
BSFL Packaging products are manufactured to the highest standards by our approved ISO registered suppliers and we continue to work closely with them to ensure that our quality standards are maintained.
Newson Gale Static Earthing Clamps, Cables & Products
Hazardous Areas & Explosive Atmospheres
Thorne & Derrick, Experts in Equipment for Explosive Atmospheres are your local Technical Distributor for Newson Gale – you can contact us to discuss your site compliance with the latest safety standards or to arrange an informal site survey.
Electrical equipment, including static earthing systems and electrical apparatus, for use in hazardous locations must be correctly specified and suited for the flammable gas/dust group, the temperature classification and that particular explosion protection concept.
Experts in Electrical Equipment for Explosive Atmospheres & Hazardous Areas
Thorne & Derrick International are the UK’s Specialist Distributor of Drum & IBC Heating Equipment to diverse industries including process, food and beverage, confectionery, manufacturing, chemicals, pharmaceutical and utilities – we service the international marketplace via our dedicated Exports Department.