Figure 5-37. P-250 pump and eductor rigged for dewatering a flooded compartment.
What dangerous gas is produced when the
P-100 pump is operated?
Figure 5-38. AFFF in-line eductor setup.
The portable submersible pump is rated to
deliver 180 gallons per minute, against a
maximum head of 50 feet.
The emergency overboard discharge connections,
port and starboard, are installed through the hull of each
An eductor is a jet-type pump that contains
main transverse subdivision on the damage control
no moving parts.
deck. It is a 4-inch connection, reduced to 2 1/2 inches,
and is normally used during dewatering evolutions.
Some smaller ships may use a standard 2 1/2-inch
connection that does not require a reducer. These
connections are not normally fitted with valves; instead,
What equipment is designed to mix seawater
they are fitted with watertight screw caps over the
and AFFF concentrate to produce an AFFF
inboard ends. Eductor or portable fire-fighting pumps
solution for combating fires?
may be directed overboard through these connections.
M a i n t e n a n c e f o r t h e e m e rg e n cy ove r b o a r d
discharge connections will include cleaning,
inspecting, and lubrication. Maintenance will be
Portable AFFF in-line eductor
accomplished according to the applicable planned
P-100 pump with AFFF mixer attached