FFU requirements involving combustible dust, why do you need to confirm the hazardous area and process boundaries first?
Why the FFU requirements of combustible dust projects need to be clearly defined first
In the production of lithium batteries, photovoltaics and new energy, some processes may produce combustible dust. For example, lithium electrode sheets are cut, slit, and crushed. For projects involving combustible dust, the FFU configuration cannot be directly applied according to the conventional clean room plan.
Risks from combustible dust are related to dust characteristics, concentration, particle size, ignition source and ventilation conditions. As air supply equipment, FFU may affect dust diffusion and electrical safety. If FFU is configured improperly, risks may increase or security requirements may not be met.
Therefore, for projects involving combustible dust, project professionals should first clarify the dust characteristics, hazardous area divisions and equipment usage boundaries, and then confirm the FFU plan. Conventional FFU, anti-static FFU and explosion-proof configuration cannot be confused. Aili Industrial has complete production capabilities in FFU complete machines and special working conditions, and can provide configuration solutions according to project safety requirements. For the basic structure of the FFU machine, you can refer toAili Industrial FFU fan filter unit。
What needs to be clarified about dust characteristics
Dust characteristics are the basis for hazardous area classification. Contents that need to be clarified include: dust type and chemical composition; particle size distribution; lower explosion limit; minimum ignition energy; characteristics of dust layers and dust clouds; and whether it is conductive.
These characteristics are typically determined by project safety professionals or dust test reports. FFU manufacturers need to judge equipment configuration requirements based on this information. If the dust characteristics are not clear, the FFU configuration may not meet safety requirements.
How to divide dangerous areas
The division of hazardous areas shall be carried out by project professionals in accordance with relevant specifications. The classification results determine which areas are hazardous areas and the level of hazard. If the FFU is installed in a hazardous area, its electrical configuration needs to meet the corresponding requirements.
The boundaries and scope of the dangerous area division should be clear and marked on the drawings. FFU layout and electrical configuration should be determined based on the division results.
How to confirm equipment usage boundaries
The equipment usage boundary includes whether the FFU is installed in a hazardous area, whether it is exposed to dust, and whether it may become an ignition source. If the FFU is installed outside the hazardous area, but the supply air enters the hazardous area, it also needs to be evaluated.
After the boundary is confirmed, the configuration requirements of FFU can be determined. For example, whether explosion-proof motors and controllers are required, whether anti-static measures are required, and whether special sealing is required.
The difference between conventional FFU, anti-static FFU and explosion-proof configuration
Conventional FFU is suitable for general clean environments. Anti-static FFU adds anti-static measures to conventional FFU, such as conductive boxes, grounding and anti-static materials, and is suitable for areas with static sensitivity or risk of static electricity accumulation. The explosion-proof FFU meets explosion-proof requirements in terms of electrical configuration and is suitable for use in hazardous areas.
The three cannot replace each other. Anti-static measures cannot replace explosion-proof configuration, and conventional FFU cannot be used in hazardous areas. Which configuration is selected depends on the hazardous area demarcation and project safety requirements.
For projects with explosion-proof requirements, you can refer toExplosion-proof FFU understands explosion-proof configurations. For projects with anti-static requirements, you can refer toAnti-static EFU Learn about anti-static configurations.
How to coordinate system division of labor
FFU is often used in conjunction with local exhaust, dust collection and process equipment in combustible dust projects. FFU provides clean air supply and local exhaust to collect dust near the dust source. If you only rely on FFU for air supply, the dust may be blown away. If you rely only on exhaust, the cleanliness may not be enough.
System division of labor should be clarified during the project design phase. The air supply direction and air volume of the FFU should match the exhaust path to avoid dust diffusion.
Issues that should be confirmed in advance during project communication
In FFU projects involving combustible dust, it is recommended to confirm the following with project safety professionals and FFU manufacturers: dust characteristics and test reports; hazardous area divisions; equipment use boundaries; FFU electrical configuration requirements; anti-static or explosion-proof measures; local exhaust and dust collection plans; FFU air supply direction and air volume; system division of labor and verification methods.
If you are dealing with FFU needs for a combustible dust project, you can visitAili Industrial FFU fan filter unit to learn about the complete machine configuration, you can also refer toExplosion-proof FFU understands the explosion-proof configuration, or contact Aili Industrial for special working condition selection support.
in conclusion
For projects involving combustible dust, the dust characteristics, hazardous areas and equipment usage boundaries should be clarified before confirming the FFU plan. Conventional FFU, anti-static FFU and explosion-proof configuration cannot be confused. The division of hazardous areas should be determined by project professionals, and the FFU configuration should meet the corresponding requirements. System division of labor needs to be coordinated with local exhaust and dust collection.
Aili Industrial has complete production capabilities in FFU complete machines and special working conditions, and can provide configuration solutions according to project safety requirements. If you need to know more about FFU selection for combustible dust projects, you can visitAili Industrial FFU fan filter unit , you are also welcome to contact Aili Industrial for project support.
