Manage Potable Water Surveillance Flashcards
Define coaming
A raised frame to keep out water
Define distillation
The total process the distilling plant forms, including evaporation and condensation.
Define Free Available Chlorine (FAC):
Chlorine available (after demand is met) in the forms of Hypochlorous acid and Hypochlorite ions.
Define Micron
A unit of length. One millionth of a meter.
Define point of use
A treatment device applied to a single tap used for the purpose of reducing contaminants in drinking water at that tap.
Define potable water
Water that is suitable for human consumption, bathing, laundry, personal hygiene.
Define reverse osmosis
The reverse of the natural osmosis achieved by external reverse pressure to cause the solvent to flow in its unnatural
direction.
Define Colilert / Colisure
Test used to detect total coliform and E-coli in the potable water.
define total coliform
Are a group of closely related, mostly harmless bacteria that live in soil and
water as well as the guts of animals. The extent to which total coliforms are
present in the source water can indicate the general quality of that water and
the likelihood that the water is contaminated with fecal matter. The presence
or absence of total coliform bacteria is the drinking water standard
Define E. Coli
A type of fecal coliform bacteria commonly found in the intestines of
animals and humans. E. coli is short for Escherichia coli. The presence of E.
coli in water is a strong indication of recent sewage or animal waste
contamination. Sewage may contain many types of disease-causing
organisms.
what are the responsibilities of Naval Sea Systems Command (NAVSEASYSCOM)
Design
Construction
Maintenance
who is responsible for promulgating instructions for ship-to-shore potable water connections and for providing potable water from an approved source when the ship is berthed at a naval facility
Naval Facilities Engineering Command (NAVFACENGCOM)
what are the responsibilities of the chief of BUMED IRT potable water
health standards for water
quality afloat
afloat water quality requirements.
medical surveillance of potable
water systems.
what are the responsibilities of the Area, Fleet and subordinate commanders
Responsible for issuing the necessary
implementing directives to ensure that adequate water sanitation standards are
provided and enforced in each ship within the command
what are the responsibilities of the Commanding Officer
responsible for promulgating a water sanitation bill to
ensure that procedures for receipt, transfer, treatment, storage, distribution, and
surveillance are provided and followed.
what are the responsibilities of the Engineering Department
Supply and treatment of Potable water
Ensure that all ship-to-shore and ship-to-ship connections are made only by
authorized personnel,
Halogen and pH testing
Ensure minimum halogen residuals are maintained
what are the potable water system components that Engineering Department maintains
Receive
Store
Distribute
Produce
Treat
what are the responsibilities of the medical department
Bacteriological (BACTI) Testing
Daily Halogen Testing
MDR shall notify the commanding officer of any discrepancies observed in the
potable water distribution system.
how many gallons per day is specified by by NAVSEASYSCOM in normal conditions
50 gallons
during water hours how many gallons per day is authorized
no less than 2 gallons
what are approved sources of potable water for naval ships
Distillation, Reverse Osmosis (RO),
Shore-to Ship delivery
Ship-to-Ship
ships should avoid making water while operating in what conditions?
Harbors or from polluted seawater.
close formation.
stripping/discharging waste or bilge water forward of the saltwater intakes.
who approves public water systems
EPA
state/territory
what countries have approved water sources of
British Royal Navy
Royal Australian Navy
Canadian Forces
if water is shore to ship delivered from a unapproved source what must prior to allowing receipt receipt
been treated at a minimum of 2.0
ppm
what are the two types of water production plants
Distillation Plants
Reverse Osmosis (RO
what are the three general Distillation Plants
Steam Distilling Plants
Waste Heat Distilling Plan
Vapor Compression Type
the navy uses what Reverse osmosis pass
Single or triple pass
what percentage of water permeates through the RO
membrane to become fresh water.
20-25 percent
if single RO is utilized what is done
additional disinfection such as
chlorination or bromination is required
is additional disinfection required for For triple pass RO plants
No
what are the Shipboard Water System Components
Potable Water Tanks
Vents and Overflows lines
Manholes
Water Level Measurement
Filling Lines
Piping
shipboard potable water tanks are required to be compliant with who
NSF/ANSI standard
where are the Unauthorized termination points
Food Service Spaces
Medical Spaces
Toilets
Electrical or electronic rooms
Exterior of the ship
if the top of a tank is also a deck what must be a design feature
1/2” curb or coaming above deck
if a steel tape that sounding tube is utilized how must it be disinfected
200 FAC for 2 min
filling lines must have what characteristics
Clearly labeled
Color coded Dark blue
18 inches from the deck
Turned facing downward
Screw caps with keeper chains
Potable hot water settings should be set so the temperature at the fixture at what temp at the water tap
120 degrees
what are characteristics of the potable water hose locker
Vermin proof
Locked
18 inches off the deck
instructions for disinfection of hoses and risers
how shall hoses be labeled
“POTABLE WATER ONLY” with 1 inch high letters every 10 feet
Couplings color-coded dark blue.
how shall Valves for receiving or supplying potable water (Risers) be labeled
warning plate “POTABLE WATER ONLY” in 1/4
inch high letters.
Valves or valve handles must be color-coded dark blue.
what must be done before receiving or transferring water via approved source,
Halogen shall be tested prior to the initial transfer of water
who shall the engineering dept notify before making potable water hose connection.
MDR
if potable water is obtained from a doubtful quality what shall be done
investigated and examined water
advise CO of any necessary procedures, safeguards, and disinfection.
what is the minimum halogen residual requirements for water with doubtful quality
2.0 ppm
