Explosion protection

Protection as per ATEX – up to 9.5 bar g

The presence of hazardous gas mixtures and dangerous dust concentrations means that dust-extraction systems require special protection. Jet filters by DFT GmbH Deichmann Filter Technik that are explosion pressure-shock resistant provide this security in accordance with the regulations of ATEX.

Hazardous dust concentrations can destroy entire factories. One flour-dust explosion in Germany killed more than a dozen people and caused millions of damage.

The new requirements for explosion protection in plants and companies is considerably stricter since the new Industrial Safety Regulations ATEX have gone into force.

The new requirements for explosion protection in plants and companies is considerably stricter since the new Industrial Safety Regulations ATEX have gone into force. The new regulations make plant operators responsible for the implementation of the required safety measures.

In some explosion-endangered cases – for example, in painting operations or woodprocessing plants – explosive gases and explosive dust can even occur simultaneously. DFT GmbH Deichmann Filter Technik therefore manufactures dust-extraction systems that are explosion pressure-shock resistant for processes with explosive dust and dangerous gas mixtures.

 
All ATEX filters are subjected to air pressure with reduced explosive pressure to 0.4 bar; with greater pressure, water is used. Testing takes place up to 90% of rated pressure. The testing authority is the German Technical Inspection Agencies (TÜV).

It is especially with gas mixtures that it is critical to use electrically conductive filter material. DFT GmbH Deichmann Filter Technik supplies the required filter media.

Deichmann explosion-protection systems

Explosion pressure release
as per VDI 3673,
pressure-shock resistant
up to 1.4 bar

Explosion pressure-shock
resistant containers

as per VDI 2263,
pressure-shock resistant
up to 11 bar

Explosion isolation
Mechanically or chemically
isolation of the flame path

Explosion suppression
Explosions are detected
when they initially develop