TM 55-1930-209-14&P-19
Table 2-3. Major Components of Diesel Engine Generator Cooling Seawater
Component
Function
Location
Seachest
Supplies seawater for generator
Void 4 port
unit cooling
Generator cooling
Removes foreign matter from
Void 4 port
strainer
seawater before water enters
generator cooling pump
Cooling strainer
Indicates pressure in strainer
Void 4 port
inlet pressure gauge
input line
(Barges 2 and 3 only)
Cooling strainer
Indicates pressure in strainer
Void 4 port
outlet pressure gauge
output line
(Barges 2 and 3 only)
Inlet temperature
Indicates temperature of cooling
1 in void 4 port and
gauge
water entering each generator
2 in void 4 starboard
set
(one on each generator
set)
Outlet temperature
Indicates temperature of cooling
1 in void 4 port and
gauge
water leaving each generator
2 in void 4 starboard
set
(one on each generator
set except for the
auxiliary generator
on Barge 1)
2-3
Seawater System Description. The seawater system supplies seawater to the ROWPUs for processing, to the air
conditioning unit for cooling, to the ballast tank (Figures 2-1 and 2-2) for barge trimming, to the chlorination unit for
priming and cooling (Figure 2-3 and 2-4), and to the diesel generators (Figures 2-5 and 2-6) for cooling. There are three
sources for supplying seawater; a forward seachest in void 2 starboard, a shell penetration in void 2 starboard and an aft
seachest in void 4 port. The seachest in void 2 starboard supplies sufficient seawater to ROWPUs for processing when
the barge is anchored in 15 feet or more of water. When anchored in from 10 to 15 feet of water, the starboard shell
intake supplies sufficient seawater to ROWPUs for processing. When the barge is anchored or is pierside, seachest in
void 2 starboard can be used to supply seawater for the air conditioner and the chlorination unit. Also, when the barge is
anchored or pierside, the seachest in void 4 port can be used to supply seawater for cooling diesel generators.
2-3
