Other important considerations - Ventilation of safety storage cabinets
Explosion and health protection
In accordance with DIN EN 14470, safety storage cabinets must be provided with supply and exhaust air connection sockets in order to prevent hazardous vapours escaping into the working area by means of a technical exhaust air system. The exhaust air must be routed into the open air in a safe location. Alternatively, ATEX-compliant (2014/34 / EU) recirculating air filter systems have been tried and tested in practice in safety storage cabinets for solvents. In accordance with TRGS 510, safety storage cabinets without industrial ventilation must be earthed due to the increased hazard potential.
Your added advantage with industrial ventilation!
» Preventing an explosive atmosphere: A concentration dilution can be achieved in the safety storage cabinet as of a 10-fold air exchange per hour, thereby avoiding an ex-zone around the cabinet. Please note that something as simple as a laboratory bottle that has been opened once may be a permanent source of emissions.
» Minimisation of health risks: Ventilation technology can serve to counteract an increased risk of explosion as well as odour pollution. In practice, it might be necessary to configure a higher rate of air exchange.
» Effectiveness/functionality: The ventilation must be effective directly above the bottom tray, as vapours are often heavier than air. The laboratory directive also requires that the extraction is applied directly at the point of danger. That's why all DÜPERTHAL safety storage cabinets are equipped with ventilation at each cabinet level.
To guarantee maximum safety for your employees, connection to technical exhaust air systems is essential in the case of many chemicals. DÜPERTHAL offers a variety of solutions to stop harmful vapours escaping into the work area. All ventilators and components comply with Directive 2014/34/EU (ATEX) and thus meet the highest safety standards.
Room ventilation systems in accordance with DIN 1946-7.
Safety storage cabinets are exhaust air treatment facilities when they are operated with outgoing air or recirculating air. Exhaust systems should be planned, set up and operated in such a way that no hazard can arise due to a dangerous explosive atmosphere. Released gases, vapours and aerosols must be removed and diluted so that there are no health risks due to inhalation. Only continuous monitoring of ventilation allows the operator to take appropriate technical and organisational measures to prevent hazards in the event of a ventilation failure. The design of the systems must ensure that the sound pressure level in the room does not exceed 52 dB(A).
ATEX Directive 2014/34/EU
Attaching a ventilator to a safety storage cabinet for flammable liquids or flammable gases represents "combined equipment". In accordance with the German Industrial Safety Regulation (BetrSichV), ventilators must meet the requirements of Directive 2014/34/EU (valid since 20 April 2016, previously 94/9/EC) as equipment in ex-zones of Zone 2.
Flammable and aggressive vapours
Due to the large number of flammable and aggressive vapours, it is not possible to issue a blanket statement on the resistance of the exhaust air systems and ventilators. We recommend the following: Make sure the ventilator material will not be attacked by the vapours of the stored media – the manufacturer or the EC material safety data sheet for the liquid can help in determining this.