TM 55-1930-209-14&P-3
Table 1-1. ROWPU System Components *
Component
Quantity
Function
Location
HP pump
1 per
Boosts pressure of
Aft of media
assembly
ROWPU
chemically treated
filters and RO
seawater to high
block assembly
level required for
RO block processing
RO block assembly
1 per
Processes chemically
Inboard of media
ROWPU
treated seawater
filters
from HP pump
Hydraldeen-20
1 per
Cleans RO membrane
Inboard of Hydra-
(55-gallon
ROWPU
elements
pol- 50 drum
cleaning agent
drum)
Chemical meter-
2 per
Adds measured amounts of
On top of pretreat-
ing pumps
ROWPU
chemicals (coagulant aid
ment skid
and Inhibitor) to
feedwater
Hydrapol-50
1 per
Added to seawater as
Forward of pre-
(55-gallon
ROWPU
a coagulant aid before
treatment skin
coagulant drum)
entering media filters
Hydrapol-100
1 per
Added to seawater as
Outboard of Hydra-
(55-gallon
ROWPU
a scale Inhibitor before
pol- 50 drum
inhibitor drum)
entering cartridge
filter assembly
*See Table 3-3 for listing of ROWPU system valves.
1-9
System capabilities
24-hour production (per ROWPU)
150,000 gallons
24-hour production (total)
300,000 gallons
The above figures are for a production cycle of 10 hours of operating time followed by 2
hours of non-operating time to accomplish backflushing, cartridge changing, and other
maintenance.
1-10 Limitations. Seawater (feedwater) must be free of chlorine, detergents, and other contaminants. In addition, the
ROWPU cannot be operated in sea conditions that exceed Sea State 3.
1-8
