Magnus Arvidson
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Magnus Arvidson is a Fire Protection Engineer working at SP Fire Research since 1991. He served as a member in the NFPA 750 technical committee on installation of water mist fire protection systems from 1993 to 2000, has been active in the SubCommittee on FireProtection at the International Maritime Organization, and has been involved in a technical committee at CEN developing a standard for water mist systems. He is a member of the Scientific Council of the International Water Mist Association.

Figure 3: The fire in the authentic upholstered chair; the photographs were taken moments before a water mist nozzle (3 mm, 57°C glass bulb) activated, two minutes after activation, and after the test. The water flow rate was 32 litres/min at 5.2 bar.
Articles
Tests of residential sprinklers and water mist nozzles show their efficacy in combating domestic fires

Fire tests with residential sprinklers show that earlier activation and ‘faster’ glass bulbs contribute to a somewhat improved efficacy during a typical domestic fire that begins in an upholstered chair. Water mist nozzles increase efficiency in terms of a more…

Figure 1. The sprinkler glass bulbs and fire detectors when installed at the ceiling.
Articles
Response times of sprinkler glass bulbs in a residential room fire

The response time of fire sprinklers is essential for their performance, especially in applications where life safety protection is desired. The earlier the sprinkler activates, the smaller the size of the fire. The aim of this study was to determine…