The work described in this report was carried out on wood fires using
water jet extinguishers of capacity 5.7 and 9.1 l (1-1/4 and 2 gal). The
report describes tests carried out to the requirements of French and West
German standards and experiments conducted with an experimental crib, of
constant cross-sectional dimensions, to study the effect or increasing the
length on the extinction time and the quantity of water used to extinguish
the flames. A study was also made or the effect or the pre-burn time of a
German standard crib on the extinction time and the re-ignition time.