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A model to explain autumn outbreaks of Legionnaires' disease associated with small cooling towers.

Author(s) : BROADBENT C., BENTHAM R., MARWOOD L.

Type of article: Article

Summary

Concentrations of Legionnella in cooling tower water will suddenly increase if the system is restarted after a shut-down period, e.g. Monday morning start after the week-end. The pathogens in circulating water originate from biofilm in the warmer parts of the circuit, i.e. in the condenser, and accumulations growing during the shut-down are dislodged by the water flow on start-up. Suggested measures are adequate system draining, improved biocide treatment. Systems smaller than 300-kilowatt cooling capacity should have air-cooled condensers. A.R.T.

Details

  • Original title: A model to explain autumn outbreaks of Legionnaires' disease associated with small cooling towers.
  • Record ID : 1996-0859
  • Languages: English
  • Source: AIRAH J. - vol. 48 - n. 12
  • Publication date: 1994/12
  • Document available for consultation in the library of the IIR headquarters only.

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