9-7 Preparation for operation. Both the holding tank and the brine tank have to be primed before the system can
prepare the chlorine solution. Either seawater or fresh water may be used to prime both tanks. If seawater is used, it may
be supplied from either the seawater pumps in void 2 starboard or from the cooling pump in void 2 port. Fresh water, if
available, is obtained from the drinking water pressure set. Paragraph 9-13 gives details on priming the system. After
priming, this system takes about 4 hours to produce a chlorine solution of the proper strength in the holding tank. The
system can be placed in operation before this 4-hour period, but the metering pump will inject a larger amount of solution
into the product water to raise the chlorine level to the proper concentration. If the system must start injecting chlorine into
the product water as soon as the seawater and ROWPU systems are placed in operation, a commercial hypochlorite
solution (household bleach) can be added to the holding tank to create a usable solution.
9-8 Non-operating chlorination system. ROWPU barges have only one chlorination system. If this system cannot be
operated, arrangements must be made for an onshore water processing facility to add chlorine to the ROWPU barge
product water when the water comes ashore. To provide safe onboard drinking water during such a situation, water in the
reserve tank must be manually treated with chlorine according to instructions in Chapter 14.
Section III. Operating instructions
9-9 Operating controls and Indicators. Information about the chlorination system operating controls and indicators is in
table 9-2. These controls and indicators are shown in Figures 9-5 thru 9-13. Information about chlorination system
valves, shown in Figures 9-1 and 9-2, is in Table 9-3.
9-10 Prestart procedures
Before performing any chlorination system operation, be sure to check system for damage and perform the
following before operation checks.
Wipe components clean, especially flowmeters, indicators, control panels, and electrolytic cells.
Check for leaks, paying special attention to joints, valves, fittings, and piping. Report leaks to shift leader
so that corrective action can be taken.
Check for damage, especially to flowmeters, indicators, control panels, and electrolytic cells. Repair as
Check for loose or missing securements and fasteners. Tighten or replace as necessary.
Check wiring for loose connections and frayed cables. Tighten or replace as necessary.
The EMS Indicates amount of chlorine In drinking water and percentage of
metering pump stroke action.
Make sure EMS is operating. If not operating, start up according to instructions in Chapter 8.
Chlorination unit will not operate unless void blower fan 8 Is operating. Fan 8
circuit breaker 8P8 on power panel 2 (amidships on ROWPU space starboard side).