Positive pressure enclosure

rdf:langString Positive pressure enclosure

rdf:langString Positive pressure enclosure in use on a North Sea drilling platform

rdf:langString Positive pressure enclosure

rdf:langString A positive pressure enclosure, also known as a welding habitat or hot work habitat, is a chamber used to provide a safe work environment for performing hot work in the presence of explosive gases or vapors. They are used most often in welding environments and are associated with the offshore oil industry. A positive pressure enclosure works by providing a constant inflow of breathable air, which in turn, causes gas to be continuously removed from the chamber. This outflow of gases prevents the ingress of explosive gases or vapors, which are often present in such work locations. This constant outflow of gases from the chamber also serves to cleanse the air within of undesirable gaseous by-products of the welding process. Most commercial versions of positive pressure enclosures are referred to by their manufacturers as habitats. The qualities of good indoor air quality [1] should include comfortable temperature and humidity, adequate supply of fresh outdoor air, and control of pollutants from inside and outside of the habitat. Indoor air quality (also called "indoor environmental quality") describes how inside air can affect a person's health comfort, and ability to work. It can include temperature, humidity, lack of outside air (poor ventilation), mold from water damage, or exposure to other chemicals. Currently, OSHA has no indoor air quality (IAQ) standards but it does provide guidelines for the most common IAQ workplace complaints. The habitat technician needs to provide daily practical solutions to ensure the workers inside habitat are safe and healthy.