TM 55-1930-209-14&P-19
CHAPTER 2 SEAWATER SYSTEM PMCS
Section I. General system information
2-1 Introduction. Chapter 2 contains Preventive Maintenance Checks and Services for the Reverse Osmosis Water
Purification Barge Seawater System. Operating and maintenance procedures are described in detail in TM 55-1930-209-
14&P-2. TM 55-1930-209-14&P-2, Appendix C also contains complete Preventive Maintenance I Checks and Services
for the Seawater System.
2-2 Major components. The seawater system consists of the Reverse Osmosis Water Purification Unit (ROWPU) and
ballast seawater supply, the air conditioner cooling and chlorination unit seawater supply, and the diesel engine generator
cooling and seawater supply. System components include; seachests, seawater strainers, pressure gauges and
regulators, seawater filters, pumps, water supply, ballast and chemical tanks, piping, valves, and associated electrical
circuitry and control panels. Tables 2-1 through 2-3 list the major components of the seawater system, their basic
function and location on the barge.
Table 2-1. Major Components of ROWPU and Ballast Seawater Supply
Component
Function
Location
Seachest
Supplies seawater for ROWPU
Void 2 starboard
processing, chlorination unit
cooling, and heating and air
conditioning unit cooling
Seawater strainers 1 and 2
Remove foreign matter from
Void 2 starboard
seawater before water enters
seawater pumps
Seawater pumps 1 and 2
Draw seawater from seachest
Void 2 starboard
or shell penetration for
processing in ROWPU's
Seawater filters 1 and 2
Filter additional foreign matter
Void 2 starboard
from seawater before water
enters ROWPU media filters
Ballast tank
Stores seawater for trimming
Void 1
barge
Ballast tank liquid
Indicates seawater level in
Void 2 starboard on
level indicator
ballast tank
forward bulkhead
Seawater pump OFF/
For operation of seawater
ROWPU space on
ON/START switches
pumps
ROWPU 1 and 2
control stations
Change 1 2-1
