Business chestnut such as dangerous chemicals use factory - nru - mu

摘要

PURPOSE:To make it possible to provide a safety zone for refuge in an emergency within a space of work operations by creating therein a fresh air zone into which is drawn the air treated by an outside air-treating air-conditioner and constantly supplied to a space exclusively for outside air. CONSTITUTION:The requirement for air at a space of work operations 21 is satisfied with an air circulation system comprised of an under-the-floor space 31, above-the-ceiling space 24, space of work operations 21, and the under-the- floor space 31 and allowing the passage of air in this order. Apart from this air circulation system and positioned away from the production equipment 22, there is formed a fresh air zone 40 which is free of the circulating air and filled solely with treated fresh air constantly supplied from a space 25 exclusively for outside air to the space 21 of work operations. When an accident occurs in the production equipment 22, involving a leakage of toxic, combustible, or suffocating gas, an emission of smoke, or the like, the workers can take a first refuge in this fresh air zone 40.