scope:

This guideline describes the state of the art pursuant to the legal definitions of § 3 Section 6 of the BImSchG in conjunction with the annex of § 3 Section 6 of the same law and § 3 Section 10 of GefStoffV. As far as these texts are concerned, the state of the art is that state of development of progressive techniques, equipment and modes of operation which makes the practical suitability of measures for controlling emissions and for ensuring the employees' safety of health. In determining the state of the art, particular consideration shall be given to comparable techniques, equipment and modes of operation which have been successfully tested in practical operation. The guideline is applied to measures for fire and explosion protection in spray dryers where, during specified normal use, combustible dust/air mixtures, vapour/air mixtures or hybrid mixtures occur or may be formed.