Page 142 - Offshore Electrical Engineering Manual
P. 142
Diesel–Electric Fire Pumps 129
FIGURE 2.12.4
(A) Diesel–electric fire pump. The pump (foreground) is installed in a vertical submerged
stilling tube. (B) Rear view.
Courtesy SPP Offshore, a division of SPP Ltd.
A typical fire pump arrangement consists of one motor-driven pump powered
by the installation power system and two pumps driven by dedicated direct diesel
or diesel generator sets. If a diesel generator set is to be dedicated to the supply
of a particular submersible pump, weight and cost may be reduced by dispensing
with any switching device and, in the manner of a diesel–electric locomotive,
by cabling the generator directly to the pump. The usual arrangement is to use a
fire-survival cable from the generator to a terminal box at the top of the stilling
tube where it is connected to the flexible stilling tube cable. The advantage of
