MANUAL OF NAVAL MANUAL OF NAVAL PREVENTIVE MEDICINEPREVENTIVE MEDICINE

• Chapter 6Chapter 6

• Water Supply AfloatWater Supply Afloat

ResponsibilitiesResponsibilities

• NAVSEASYSCOM- design, NAVSEASYSCOM- design, construction, and maintenance of construction, and maintenance of shipboard potable water systems.shipboard potable water systems.

• NAVFACENGCOM-ship to shore NAVFACENGCOM-ship to shore potable water connections, and potable water connections, and provide potable from approved provide potable from approved sources while at naval facilitiessources while at naval facilities

ResponsibilitiesResponsibilities

• Chief, BUMED-establish and Chief, BUMED-establish and promulgate health standardspromulgate health standards

• CO / Craft master- establish water CO / Craft master- establish water sanitation bill.sanitation bill.

• contains procedures for receipt, contains procedures for receipt, transfer, treatment, storage, transfer, treatment, storage, distribution, surveillance. distribution, surveillance.

RESPONSIBLITIESRESPONSIBLITIES

• Engineering Dept- ( WATER KING), Engineering Dept- ( WATER KING), responsible to the CO for implementing responsible to the CO for implementing the requirements of NAVSEASYSCOMthe requirements of NAVSEASYSCOM

• includes:includes:• supply and treatment of all potable supply and treatment of all potable

water and the system components.water and the system components.• Also responsible for daily chloride and Also responsible for daily chloride and

pH testing at the tank.pH testing at the tank.

RESPONSIBLITIESRESPONSIBLITIES

• MDR- collects samples for bacteria MDR- collects samples for bacteria testingtesting

• Also conducts daily chlorine Also conducts daily chlorine residual testing throughout the residual testing throughout the distribution systemdistribution system

• Reports directly to the CO Reports directly to the CO

SOURCES FOR POTABLE SOURCES FOR POTABLE WATERWATER

• Avoid making while in harbors or Avoid making while in harbors or from polluted seawater (ships in from polluted seawater (ships in tight formation)tight formation)

• Distillation or Reverse OsmosisDistillation or Reverse Osmosis• Shore to ship Shore to ship • Ship to shipShip to ship

USES FOR POTABLE USES FOR POTABLE WATERWATER

• DrinkingDrinking• CookingCooking• LaundryLaundry• MedicalMedical• Personal hygienePersonal hygiene

EXCEPTIONSEXCEPTIONS

• Seawater- used for fire mains, ship Seawater- used for fire mains, ship decontamination, and MSDsdecontamination, and MSDs

• Specific garbage grinders, used in Specific garbage grinders, used in sculleries, approved by BUMED sculleries, approved by BUMED

USAGE REQUIREMENTSUSAGE REQUIREMENTS

• Two gallons per day, per man in Two gallons per day, per man in emergency or unusual situationsemergency or unusual situations

• For new ship constructions, 50 For new ship constructions, 50 gallons per day per mangallons per day per man

RECEIPT AND TRANSFERRECEIPT AND TRANSFER

• Testing must be done prior to any hose Testing must be done prior to any hose connectionsconnections

• MDR must check chlorine levels, and MDR must check chlorine levels, and notify Eng Dept (Water King)notify Eng Dept (Water King)

• If water taken aboard does not meet the If water taken aboard does not meet the standards, it must be held in storage, standards, it must be held in storage, treated, and tested before distributed treated, and tested before distributed through the systemthrough the system

RECEIPT AND TRANSFERRECEIPT AND TRANSFER

• Potable water risersPotable water risers• a) 18 inches above deck and a) 18 inches above deck and

turned downturned down• b) properly labeled, color-coded b) properly labeled, color-coded

dark blue,dark blue, and fitted with a screw and fitted with a screw cap and keeper chaincap and keeper chain

WATER PRODUCTION WATER PRODUCTION PLANTSPLANTS

• Two types:Two types:• a) Distillation-uses steam, waste a) Distillation-uses steam, waste

heat, or vapor compressionheat, or vapor compression• b) Reverse Osmosis-uses a series b) Reverse Osmosis-uses a series

of strainers, separators, and of strainers, separators, and cartridges that remove particles cartridges that remove particles

WATER TANKSWATER TANKS

• Used only to store potable waterUsed only to store potable water• In emergencies they may be filled with In emergencies they may be filled with

ballast water to save the shipballast water to save the ship Vents / Overflow Lines- used to reduce Vents / Overflow Lines- used to reduce

possibility of contaminationpossibility of contaminationOpenings must be covered with 18-mesh, Openings must be covered with 18-mesh,

and can not terminate in food service and can not terminate in food service spaces, or spaces containing electrical spaces, or spaces containing electrical equipmentequipment

MEASUREMENT MEASUREMENT

• Automatic gaugesAutomatic gauges• PetcocksPetcocks• Sounding tubes ( rod remains in Sounding tubes ( rod remains in

the tube)the tube)• Sounding tapes- must be sanitized Sounding tapes- must be sanitized

at 100ppm in a chlorine solution for at 100ppm in a chlorine solution for 2 minutes prior to each use2 minutes prior to each use

PIPINGPIPING

• Any piping passing through non-Any piping passing through non-potable tanks must be surrounded potable tanks must be surrounded by a sloped self draining pipe by a sloped self draining pipe tunneltunnel

REPAIRSREPAIRS

• Break or compromise in the Break or compromise in the system, or entrance into a tank: system, or entrance into a tank: entire system must be cleaned, entire system must be cleaned, flushed, and tested prior to use.flushed, and tested prior to use.

• MDR must be notified of this by the MDR must be notified of this by the Eng DeptEng Dept

LABELING-COLOR CODINGLABELING-COLOR CODING

• Sounding tubes-will have identification Sounding tubes-will have identification plate, with the cap color-coded plate, with the cap color-coded dark bluedark blue

• Sounding tapes-handle colored Sounding tapes-handle colored dark dark blueblue, or labeled “POTABLE WATER USE , or labeled “POTABLE WATER USE ONLY”ONLY”

• Valves-warning plate labeled’ POTABLE Valves-warning plate labeled’ POTABLE WATER ONLY” in ¼ inch high lettersWATER ONLY” in ¼ inch high letters

LABELING-COLOR CODINGLABELING-COLOR CODING

• Potable water hoses- labeled “POTABLE Potable water hoses- labeled “POTABLE WATER ONLY” in 1 inch letters every ten WATER ONLY” in 1 inch letters every ten feet.feet.

• End couplings End couplings dark bluedark blue• Potable water piping passing through Potable water piping passing through

any space must be labeled with the type any space must be labeled with the type of service and arrows with the direction of service and arrows with the direction of flowof flow

STORAGE LOCKERSSTORAGE LOCKERS

• Labeled “POTABLE WATER HOSE”Labeled “POTABLE WATER HOSE”• 18 inches off the deck and vermin proof18 inches off the deck and vermin proof• Hoses must be capped when not in useHoses must be capped when not in use• Instructions on disinfection of the hoses Instructions on disinfection of the hoses

and risers must be maintained in the and risers must be maintained in the lockerlocker

DISINFECTIONDISINFECTION

• .2ppm measured at the tank.2ppm measured at the tank• Trace amounts must be found Trace amounts must be found

throughout the system.throughout the system.• Chlorine- calcium hypochlorite is Chlorine- calcium hypochlorite is

used on ship.used on ship.• Found in 6oz bottles. Found in 6oz bottles. • Very corrosive and must be stored Very corrosive and must be stored

as Haz Matas Haz Mat

DISINFECTIONDISINFECTION

• Chlorine can not be stored with any Chlorine can not be stored with any oxidizable materialsoxidizable materials

• Keep in a cool, dry, well-ventilated Keep in a cool, dry, well-ventilated space not to exceed 100 degrees Fspace not to exceed 100 degrees F

• No more than 48 6oz bottles can No more than 48 6oz bottles can be stored togetherbe stored together

• Loses strength with ageLoses strength with age

DISINFECTIONDISINFECTION

• Must be stored in a locker or bin Must be stored in a locker or bin labeled: HARZARDOUS MATERIAL labeled: HARZARDOUS MATERIAL CALCIUM HYPERCHLORITE in CALCIUM HYPERCHLORITE in red red lettersletters on a white background on a white background

DISINFECTIONDISINFECTION

• Bromine- provided in cartridgesBromine- provided in cartridges• Slightly corrosiveSlightly corrosive• Kept in clean, dry, well-vented Kept in clean, dry, well-vented

storeroomsstorerooms• Require hazardous material Require hazardous material

warning platewarning plate• Shelf life of two yearsShelf life of two years

DISINFECTIONDISINFECTION

• .2ppm from approved sources.2ppm from approved sources

• 2.0ppm from unapproved sources2.0ppm from unapproved sources

DISINFECTION of TANKSDISINFECTION of TANKS

• Apply a 200ppm solution to all tank Apply a 200ppm solution to all tank surfacessurfaces

• Flush inlet / outlet pipes with a Flush inlet / outlet pipes with a 10ppm solution10ppm solution

• Must have 30 minute contact timeMust have 30 minute contact time• Refill tank and test for chlorine Refill tank and test for chlorine

level level

DISINFECTION OF HOSES, DISINFECTION OF HOSES, RODS, TAPESRODS, TAPES

• Hoses-100ppm solution for 2 Hoses-100ppm solution for 2 minutes, then flush with potable minutes, then flush with potable waterwater

• All connectors- disinfect with All connectors- disinfect with 100ppm solution with a 2 minute 100ppm solution with a 2 minute contact time.contact time.

• Flush all shore water sources for 30 Flush all shore water sources for 30 seconds prior to hook upseconds prior to hook up

QUESTIONSQUESTIONS

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