Physical hazards include fire and explosions as well as corrosion and temperature. The degree of risk attached to the hazard is dependant upon the properties of the gas and the solid content.
The fan equipment itself may pose a physical hazard. Within the European Union, the Machinery Directive, 89/392/EEC, and the amending directive 91/368/EEC, which came into force on 1st January 1993, place the responsibility for safety on the machine designer. The machine must be designed to be safe in all aspects:
If the designer is unable to devise a completely safe machine the areas of concern must be documented and recommended precautions communicated to the user. Because this is a legal requirement in all EU countries the machine designer may not be relieved of the obligations by a third party. A supporting European ‘C’ type standard is EN 14461.
Posted in Fans Ventilation A Practical Guide