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Gigiena i sanitariia · Nov 2011
[Hygienic assessment of the characteristics of centralized hot water supply in case of Moscow].
- A A Bukshuk and N A Egorova.
- Gig Sanit. 2011 Nov 1 (6): 32-5.
AbstractThe paper considers the characteristics of domestic hot water consumption by Moscow dwellers. It gives the results of questionnaire surveys in 100 respondents aged 20-80 years about the modes and intensity of hot water use, by indicating the time and frequency of contact with hot water complaints about hot water supply. According to the authors'studies, the daily consumption of hot water per capita was 1.1-2 times greater than that of cold water; at the same time the total water use remained to be 1.3-3 times less than the Moscow standard levels. Top stationary point measurements of water temperature showed the noncompliance with its hygienic requirements: 95 of 98 hot water samples had a temperature of 5-22 degrees C less than the standard temperature (60 degrees C). A decrease in hot water temperature in the centralized hot water supply systems creates conditions for Legionella pneumophila propagation and ensures no hot water safety with regards to the possible development of Legionella pneumonia.
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