1. Potable Water System General Locations and Operations

2. The potable water system provides fresh water for the following services on the fireboat: Hot/Cold fresh water for wash-down and maintenance from hose bibs through out vessel Hot/Cold fresh water for HAZMAT Corridor “fine” DECON Hot/Cold fresh water at Main Deck Crane Pedestal Diver re-habilitation shower Hot/Cold fresh water for Multipurpose Room Water Closet shower. Hot/Cold fresh water for wash basins in Multipurpose Room Water Closet, Galley Basin and Boat Deck Water Closet, and Machinery Space Wash Basin in the Port VSP room. Cold fresh water for flush toilets in Multipurpose Room and Boat Deck Water Closets. Cold fresh water for Wynn Window washers for CIC windows and fore and aft Wheelhouse windows. Cold fresh water to the Galley Ice Maker. Potable Water System

3. Potable Water Distribution Diagram

4. Potable Water System Potable Water Distribution Hose Bibs above deck: (2) On Main Deck (Forward/Aft), (2) On Boat Deck (Forward/Aft), One on top of Wheelhouse Main Deck Aft Main Deck Fwd Boat Deck Fwd

5. Potable Water System Potable Water Distribution Hose Bibs machinery spaces: (2) VSP Room (Port/Stbd), (2) Engine Room (Port/Stbd), One in Aft Hold Engine Room PortVSP Room PortAft Hold

6. Potable Water System Potable Water Distribution HAZMAT Corridor “Fine” DECON Shower

7. Potable Water System Potable Water Distribution Diver Rehabilitation Shower

8. Potable Water System Potable Water Distribution Multipurpose Room Water Closet Shower

9. Potable Water System Potable Water Distribution Galley Basin and Ice Maker

10. Potable Water System Potable Water Distribution Multipurpose Room Water Closet Toilet and Wash Basin

11. Potable Water System Potable Water Distribution Boat Deck Water Closet Wash Basin and Toilet. (This is just outside the CIC Room)

12. Potable Water System Potable Water Distribution Machinery Space Wash Basin – Located Port Side VSP Room. Note: sump pump below basin pumps waster water to Oily Water Tank, not Grey Water Tank! (Not a Urinal)

13. Potable Water Distribution Potable Water System Wynn Window Washing System Sprayers – CIC and Wheel House Windows

14. Potable Water System Potable Water Distribution Push these buttons on wiper controls in CIC or Wheelhouse Consoles to activate window wash spray system

15. Potable Water System Potable Water Storage Potable Water is stored in an 850 US Gallon cylindrical, horizontal, polyethylene tank. This tank is located in the Tank Void

16. Potable Water System Potable Water Storage The Tank Void is entered through a single openable hatch in the EMS Recovery Room Deck. Note: This is technically a confined space so exercise tank entry procedures if you head down to check/inspect the Potable Water Tank.

17. Potable Water Storage Potable Water System Here is what the Potable Water Tank looks like down in the Tank Void

18. Potable Water System Potable Water Storage You get an additional 100 US gallons of potable water storage from the hot water heater, 60 US gallons from the Hydrophore. Both of these are in the VSP Room, Port, FWD. That gives us a total Potable Water capacity of 1000 US Gallons! Water HeaterHydrophore

19. Potable Water System Potable Water Fill Potable Water Fill Connection is located on the forward Main Deck, just in front of the Deck House on the Starboard Side. It is a 1 inch male Cam-Lock fitting with a ball valve. The builder will also provide us with a 1 inch female Cam- Lock to ¾ inch male garden hose adaptor.

20. Potable Water System Potable Water Fill From the main deck fill location, potable water drops down through the EMS Recovery Room, through the deck into the Tank Void. Note: Potable Water Tank Vent is in EMS Recovery Room! This was done because of CBRN boundary issues, and potable water had to be protected within the CBRN Citadel.

21. Potable Water System Potable Water Fill The potable water drops down into the Tank Void, directly into the Potable Water Tank

22. Potable Water System Potable Water Fill Potable Water Vent Line Potable Water Vent – EMS Recovery Room Note: When filling potable water tank, you need to be vigilant against overflowing the tank because the vent is inside the fireboat in the EMS Recovery Room. PAY ATTENTION TO YOUR TANK LEVEL!

23. Potable Water System Potable Water Gauging (Liquid Level) The Potable Water Tank is equipped with a sonic gauging sensor. It uses sound waves to indicate the liquid level in the tank.

24. Potable Water System Potable Water Gauging (Liquid Level) You can observe the Potable Water Tank level as a percentage full (or empty if you are a pessimist) on one of the Alarm Monitoring System (AMS) touch screen displays. Tank levels are on the “Tanks” page.

25. Potable Water System Potable Water Gauging (Liquid Level) If for some reason you lack confidence in the +/- %0.2 accuracy of the electronic tank gauging device, you can always resort to monitoring the liquid level in the Potable Water Tank by going down in the Tank Void with a flash light and visualizing the water level through the tank. Note: Tank Void is technically a confined space. Observe proper tank entry procedures! Tank Gauging Sonic Transducer

26. Potable Water System Potable Water Pressure, Purification, and Heating Its all together in the Forward end of the Port VSP Room (2) Pumps under floor plates Hydrophore Water Heater

27. Potable Water System Potable Water Pressure, Purification, and Heating Its all together in the Forward end of the Port VSP Room Line Filter U/V Sterilizer

28. System is designed for both pumps to operate in parallel. This provides more flow when multiple outlets are open. With two hose bibs running full open, both pumps run and maintain a system pressure between 50 to 55 psi. Also, if one pump fails, we still have the ability to run the system on a single pump while the OOS pump is being repaired (We just will not have full volume). System pressure is also maintained through a static pressure accumulating device (hydrophore). The internal bladder of the hydrophore helps the system maintain a working pressure of between 40 to 60 psi and minimizes the short cycling of the water pumps. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation

29. Potable Water System Potable Water Pressure, Purification, and Heating (2) Centrifugal pumps rated at 20 gpm @ 60 psi. Driven by electric motors 220 VAC. Pressure switches are set: Cut in 40 psig Cut out 60 psig Configuration and Operation

30. Potable Water Pressure, Purification, and Heating Potable Water System The potable water pump breakers are in the 220 VAC panels in the forward end of the Aft Hold. These breakers are normally closed since the pump motors are set to run on demand. Configuration and Operation

31. Potable Water System Potable Water Pressure, Purification, and Heating Good news! Almost all the valves in this system are Normally Open, so there will be little need to interact with this system once it is set up. We will now trace the system configuration from source to outlets: Pointing out the general valve positions, and water paths. Configuration and Operation

32. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation In the Tank Void, the Potable Water Tank Supply Valve Normally Open

33. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Water flows from Potable Water Tank in Tank Void, though VSP Room forward bulkhead to pump suctions. Pump suction valves Normally Open

34. Potable Water Circuit through Pumps Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Relief Valves set at 66 psi. If they lift, they recirculate back to suction side of pump.

35. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Potable Water leaves the pumps and passes into the common discharge manifold that is located just under the hydrophore. Hydrophore Isolation Valve Normally Open Potable Water Pump #1 and Potable Water Pump #2 Discharge Valves Normally Open

36. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Potable Water travels from the common discharge manifold and to the filter portion of the circuit. Filter Circuit Isolation Valves Normally Open Filter Circuit Bi-Pass Valve Normally Closed Discharge Isolation Valve Normally Open

37. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Potable Water continues through the filtration circuit. 1.Cartridge Filter 2.U/V Sterilizer Filtration Circuit Isolation Valves Normally Open

38. Potable Water System Potable Water Pressure, Purification, and Heating Valve Sequence for Servicing Filters No need to shut down pumps: 1.Open Bi-Pass Valve 2.Close both Filter Circuit Isolation Valves 3.Do you filter service 4.Reverse sequence 5.Done

39. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Water Heater Inlet Valve Normally Open Cold Water Branch Line Valves to Services Normally Open Potable Water leaves the filtration circuit and goes to either the water heater or the branch lines that distribute the potable water to services through out vessel.

40. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation Potable water from the filtration circuit enters the water heater (Blue arrow). It then exits water heater and travels through the “Hot” Potable Water branch lines to the services through out vessel (Orange arrows). Hot Water Branch Line Valves to services. Normally Open

41. Potable Water System Potable Water Pressure, Purification, and Heating Configuration and Operation The water heater is 220 VDC. Thermostat is set to 140 degrees F. Breaker is in 220 Volt Panel P200S in Aft Hold