High degree of purity
The suction systems of the FILTERCUBE variety installed at IST are suited to suction in multiple workstations for working with unalloyed materials, precious metals and galvanised material. They are certified by the Institute for Occupational Health and Safety of the German Social Accident Insurance, pursuant to the internationally recognised norm DIN (SN) EN ISO 15012-1 for the highest class of welding fumes separation “W3“.
It claims that more than 99% of smoke and dust particles, even from high-alloyed steels are filtered out of the air. That is why the purified, warm process air is allowed to flow back into the workstation, according to an exemption clause of the Gefahrstoffverordnung, [Ordinance for Hazardous Substances] on which the Swiss accident insurance institution (SUVA) is based. Especially in winter, this saves energy costs.
Due to the conditions on-site, stationary group suction, combined with accurate gathering of harmful substances at the point of origin, appears to present the best solution. After checking whether fewer substances and processes, which are hazardous to health, could be introduced, local point suction is the recommended first choice for protecting users. In case this is not yet adequate, employees should also obtain welding helmets with a supply of fresh air.
With group fume suction, several workstations are categorised according to manufacturing or spatial aspects and form smaller suction units. A centralised suction and filter system collects and purifies the polluted air in a group. At IST, the workstations of the three areas are each focused on a group. The process in detail: The emissions released in welding are collected directly at the source using suction arms. The air containing harmful substances is lead through pipes to the suction and filtering system of the FILTERCUBE variety and is thereby purified.
It is common for group solutions to offer several advantages compared to mobile suction systems for each workstation and centralised systems for the entire hall. While the former frequently takes up a lot of room within the production, the latter does not directly protect the individual welders in the workplace.