5.1.1 Two
searchlights should be provided for illuminating the burning structure
and facilitate the effective deployment of the water monitors at night.
5.1.2 The
searchlights are to be capable of providing at a range of 250 m in
clear atmospheric conditions a level of illumination of 50 lux within
an area of not less than 11 m diameter. They are to be capable of
being adjusted in the horizontal and vertical directions.