Luoma M, Kolari S
Year:
2002
Bibliographic info:
Proceedings of Indoor Air 2002 (9th International Conference on Indoor Air Quality and Climate) - June 30 - July 5, 2002 - Monterey, California - vol 1, pp 711-715, 3 refs, 2 tabs

In the context of the definition of new national ventilation cleanliness classes in Finland, it is important to develop a clean method for the installation of ducts. An important factor that makes the inner duct surfaces dirty is the metal dust that is accumulated while side grinder is used to cut the ducts.
The laboratory tests and field experiments of this study showed that the side grinder widely used nowadays in Finland can be replaced by shears which do not produce metal sheet dust, do not sparkle and are not as noisy as the side grinder. Speed of work and work safety are good with the shears and the assembly workers were satisfied with this new method.