The need for control of cobalt from saw filing has been demonstrated by health studies in Finland, Washington state and British Columbia. I am most familiar with the study done in BC, because that is where I live and work. That study was done by a team led by Drs. Susan Kennedy and Kay Teschke, of the University of BC. They observed work activity and measured filers lung function in 8 sawmills, from June to December 1991. They found a high incidence of significantly below normal lung function. Their report was widely and effectively communicated to the sawmill industry.
New laboratory test methods using different dusts have been developed for measuring and classifying air filters but could give very misleading results compared with filter behavior in an installation. The paper describes the differences between laboratory tests and performances in atmospheric air. It provides a basis for a better understanding of air filters and filter testing to meet IAQ problems and to reflect a filters' behavior "in service".
Standards dealing with Industrial Air Technology (IA T) are very fragmented, and a real need exists for new standards this very important field. These are required to facilitate trade and communication in this important area. Clarification of the requirements for these proposed standards is necessary before any new technical committee (TC) can be established, or before new work could be allocated to any existing TC. Since 1996, there has been little discussion about new activities, a few work items on related subjects have however commenced under existing Technical Committees.
The classification of fume hoods in laboratories was conducted as a occupational protection part of risk assessment and management procedure. The fume hoods (n = 296) in laboratories were classified according to the observed face velocities. Classification scheme included descriptions of recommended use. Only 30 % of fume hoods were recommended for normal laboratory duties and 7 % were recommended not at all to be used.
The usage of Air curtain units, installed on the large openings of industrial buildings is one of the most practical and effective preventive methods applied against the uncontrolled outdoor cold air flows through the open doorways. The prevailing outdoor conditions and sometimes the indoor mechanical ventilation conditions do vary during the opening periods of the doorways of an industrial building.
The aim of this study was to find out the indoor air quality in the real estates of the state and what was the effect of ventilation to the indoor air quality in these buildings.
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