The following video looks at an example of a well-designed local exhaust ventilation (LEV) system in a school that controls well, is easy to operate and maintain and has low running costs. It looks at the use of an Atex compliant centralised vacuum extraction system used in a schools woodworking classroom and the benefits it can deliver.
The following presentation asks the question what is Local Exhaust Ventilation or LEV? It examines the health and safety measures used to control dust and fumes in the workplace using local exhaust ventilation systems (LEV) also called dust extraction or fume control.
The following presentation looks at Legionnaires’ disease, Legionella ecology, the conditions for growth and common sources of contamination including evaporative heat rejection equipment, cooling towers and evaporative condensers, hot and cold water plumbing systems, whirlpool spas and hot tubs. It outlines Legionella ecology and gives an introduction to environmental health and engineering measures for Legionellosis outbreak investigations in the USA.