Re: Powder Dispensing And Atex
I think the first thing will be for you to supply the machine manufacturer with the explosive characteristics of the dusts you are expecting him to handle. He can then make a start on the necessary risk assessments related to his machine. ■
Re: Powder Dispensing And Atex
Dan,
We are a UK based supplier of bulk solids dosing and handling machinery. Our supplier has a lot of experience of ATEX compliant systems and have several systems that I think may meet your requirements.
If you send an e-mail with some more details to sales@merrowscientific.com then we can send more information to you.
Regards
Ben
www.merrowscientific.com ■
Re: Powder Dispensing And Atex
Dan,
If the MIE (Minimum Ignition Energy) of the powders you are handling is less than 10 millijoules (mJ), the entire system should be inerted so that oxygen is less than 6% by weight. If the MIE is greater than 10 mJ, you can use vent panels or dust suppression depending on the economics.
Regards,
Amrit Agarwal
Pneumatic Conveying Consultants
polypcc@aol.com ■
Atex Conveyor Belts
Dear Members,
TRANSCO de Colmant cuvelier is the french rubber manufacturer
of conveyor belts and elevator belts, they have received
ATEX certification 94/9/CE EX II 1 D zone 20.
www.transco.tm.fr
Have a look web site.
If interest call : Miss Isabel CAROEN
i.caroen@colmant-cuvelier.com
Best regards ■
Re: Powder Dispensing And Atex
The first part of the exercise will be to do a risk assessment to satisfy the requirements of the ATEX 137 directive. As a result the so called Explosion Protection Document will be created, the backbone of the protective action plan. One of the primary focuses will be to eliminate any risk for ignition sources or combustible concentrations; as a last phase the evaluation of protective measures will be addressed.
It can be recommended to work with experienced specialists to ensure most economic approach with required level of documented safety ■
Powder Dispensing and ATEX
I work in the Beauty Care industry and we are thinking of automating part of our dispensary process. We have identified a supplier who can automatically dispense some of our powders.
The system uses a number of hoppers which are filled via a common vacuum system. The operator interfaces with a control system and then selects the quantity and powder to be dispensed. A bucket is then automatically manoeuvred to the right position under the hopper and at the same time a motor is located over the top of the relevant hopper. The motor locates against a shft running down through the hopper which then rotates and turns and pushes on a valve allowing the powder to be dispensed much like a 'pepper mill'.
The supplier usually supplies machines for use outside of Europe but I am looking for a machine that is ATEX compliant. What implications does this have for the machine as the supplier has never had to supply an ATEX compliant machine? What will they have to do differently? ■