Throughout our Understanding IBCs series, we’ve explored the key aspects of Intermediate Bulk Containers (IBCs), from their components and filling procedures to storage, transport and safe emptying. In this latest edition, we focus on another important consideration when selecting an IBC – its use in Ex-zones.
Where flammable products or explosive atmospheres are present, selecting the correct IBC and following the appropriate handling procedures is essential. Understanding when an Ex-approved IBC is required, together with the correct earthing procedures and suitable components, helps ensure safe and compliant operations.
When is an Ex-approved IBC Required?
The need for an Ex-approved IBC depends on both the characteristics of the filling product and the environment in which the container will be used.
Generally, Ex-approved containers are required:
- For filling products with a flash point of 60°C or below.
- In areas where flammable vapour or gas atmospheres are present, where only Ex-approved containers should be used.
When selecting an IBC, it’s important to consider both the product being handled and the operating environment to ensure the correct solution is chosen.
Approved Areas of Use
Ex-approved IBCs are designed for use in designated hazardous environments, subject to the relevant operating conditions and applicable regulations.
For example, SCHÜTZ ECOBULK Ex-approved IBCs are suitable for use in Ex-zones 1 and 2 when handling filling products in explosion groups IIA and IIB, provided the specified operating conditions are met.
As with any hazardous goods packaging, businesses should always ensure the IBC selected is appropriate for the intended application.
Earthing During Filling and Emptying
Correct earthing is one of the most important requirements when operating in Ex-zones.
During filling and emptying operations:
- The IBC and all conductive or dissipative components should be safely earthed.
- Conductive or dissipative hoses and filling tubes should be used where required.
- Any conductive or dissipative hose connected to a discharge valve should also be earthed.
- Electrostatic charges generated during liquid transfer should be safely dissipated to earth.
Following these procedures helps ensure the transfer system operates safely and in accordance with recognised industry guidance.
Components for Ex Applications
A range of specialist components are available for Ex-zone applications, depending on the product being handled and the process involved.
These may include:
- Conductive discharge valves
- Conductive dip tubes
- Earthing arrangements for discharge systems
- Conductive integrated stirring systems, such as the SCHÜTZ IMPELLER
Selecting the appropriate components is just as important as selecting the correct IBC, helping ensure the complete system is suitable for use within hazardous environments.
Compliance Remains Essential
Choosing an Ex-approved IBC is only one part of ensuring safe operation.
Businesses remain responsible for:
- Assessing the compatibility of the filling product with the packaging.
- Confirming the IBC is suitable for its intended application.
- Complying with applicable dangerous goods transport regulations.
- Following the recognised requirements for Ex-zone applications.
It’s also important to note that recognised standards such as IEC TS 60079-32-1 and TRGS 727 should be followed for Ex-zone applications, regardless of the information contained within the Material Safety Data Sheet (MSDS).
IBC Expertise
Choosing the correct IBC for Ex-zone applications is essential for both safe operation and regulatory compliance. At Industrial Packaging, we have extensive experience helping customers identify the most suitable IBC solution for their specific requirements. Whether you’re handling hazardous products, require UN-certified packaging or need guidance on Ex-approved IBCs, our knowledgeable team is on hand to help. Contact Industrial Packaging today to discuss your application and find the right solution for your business.