Pressurized seawater enters RO block inlet manifold which divides the water flow among 16 pressure tubes Each
pressure tube separates seawater by reverse osmosis into a high purity product water and a brine concentrate stream.
Product water from each pressure tube flows to a common manifold, through a flowmeter, and then through piping to
drinking water tanks or overboard Normal flow rate as Indicated on the flowmeter is 108 gpm. The brine stream from
each pressure tube also flows to a common manifold from which the bane flows through a throttling valve This throttling
valve allows adjustment of pressure and flow. The adjusted pressure is shown on pressure gauge P5 on the pretreatment
skid Brine is then discharged overboard through the void 5 port shell.
While ROWPU is operating, the following items are monitored on designated gauges or on the Equipment Monitoring