One of the world’s most advanced microbiological laboratories uses high-pressure water mist as a method of fire protection. Nessie® water-hydraulic pumps from Danfoss deliver the necessary water pressure for the nozzles.

One of the world’s most advanced microbiological laboratories has just been built at the Karolinska Institute in Sweden. It was built by the Smittskyddsinstitutet (Swedish Institute for Infectious Disease Control) and is divided into four safety zones, in accordance with BSL 1 to BSL 4 (Biological Safety Level).

The requirements imposed on a BSL 4 laboratory state that rooms must be air/gastight, floors and walls must be steel panels welded together, there must be a double HEPA filter to clean the air, and all run-off water must be boiled under high pressure before it leaves the building.

Safety requirements regarding the prevention of infection during fire suppression are even more severe and stipulate the use of small quantities of water to extinguish fires, especially since run-off water must be boiled. Water mist at high pressure lives up to these requirements, the typical water consumption being around a tenth of the quantity traditional sprinklers use. Another advantage of low water consumption is that consequential water damage to the building is kept to a minimum.

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