6-13 MANAGE POTABLE WATER SURVEILLANCE Flashcards
1
Q
A raised frame (as around a hatchway in the deck of a ship) to keep out water
A
Coaming
2
Q
The total process the distilling plant forms, including evaporation and condensation
A
Distillation
3
Q
Chlorine available (after demand is met) in the forms of hypochlorous acid and hypochlorite ions
A
Free available chlorine (FAC)
4
Q
A unit of length
_____ of a meter
A
micron
- one millionth
5
Q
A treatment device applied to a single tap used for the purpose of reducing contaminants in drinking water
A
Point of use (POU)
6
Q
Water that is suitable for human consumption, bathing, laundry, personal hygiene
A
Potable water
7
Q
What is the reverse of the natural osmosis achieved by external application of sufficient reverse pressure to cause the solvent to flow in its unnatural direction?
A
Reverse osmosis (RO)
8
Q
What is the test used to detect total coliform and E-coli in the potable water?
A
-Colilert/Colisure
9
Q
Mostly harmless bacteria that live in soil and water, as well as the guts of animals.
A
Total coliform
10
Q
The presence of ______ in the source water can indicate general quality of water and the likelihood that the water is contaminated with fecal matter.
A
Total coliform
11
Q
Total coliform bacteria is reported as either?
A
-Presence or absence
12
Q
A type of fecal coliform bacteria commonly found in the intestines of animals and humans
A
E. coli
13
Q
The presence of _____ in water is a strong indication of recent sewage or animal waste contamination.
A
E. coli
14
Q
Who is responsible for the design, construction, and maintenance of:
- shipboard potable water systems
- treatment facilities and processes
- assure that safe drinking water is available at all times
A
NAVSEASYSCOM
naval sea systems command
15
Q
Who is responsible for:
- promulgating instructions for ship-to-shore potable water connections
- providing potable water from an approved source when the ship is berthed at a naval facility
A
NAVFACENGCOM
naval facilities engineering command
16
Q
Who is responsible for:
- establish/disperse health standards for water quality afloat
- disperse instructions, notices, or other pubs to reflect afloat water quality
- establish shipboard requirements for medical surveillance of potable water systems
A
Chief, BUMED
17
Q
Who is responsible for:
-ensure that adequate water sanitation standards are provided and enforced in each ship
A
Area, Fleet, and subordinate commanders
18
Q
Who is responsible for:
- water sanitation bill
- procedures are provided and followed
A
CO
19
Q
Who is responsible for:
- supply/treatment of potable water
- potable water systems
- ensure connections are made my authorized personnel
- halogen/pH testing
- minimum halogen residuals are maintained
A
engineering department
20
Q
The engineering department is responsible to the CO for implementing the requirements of?
A
NAVSEASYSCOM
21
Q
Who is responsible for:
- conducting a medical surveillance program of the potable water system
- BACTI testing
- daily halogen testing
A
Medical dept rep (MDR)
22
Q
The MDR shall notify who of any discrepancies in the potable water system?
A
CO
23
Q
For new ship construction what is the minimum water usage requirements?
As specified by who?
A
- 50 gallons/man/day
- NAVSEASYSCOM
24
Q
During “water hours” what are the water usage requirements?
A
not less than 2 gallons/man/day
25
Marine sanitation device systems use what type of water?
sea water
26
You should avoid making water while operating in:
- harbors or polluted seawater
- when ships are in close formation
- when stripping or discharging water or bilge water
27
What are the approved sources for shore-to-ship delivery?
- EPA approved public water system
- U.S. military sources: British royal navy, Canadian forces, royal Australian navy
- other OCONUS obtained from U.S military reps ashore or NEPMU
28
What are the approved sources of potable water for Naval ships?
- distillation
- reverse osmosis
- NAVSEA approved water technology
- shore-to-ship from approved source
- shore-to-ship from unapproved source
- ship-to-ship
29
Seawater is used aboard ships in the?
- fire mains
- decontamination
- marine sanitation devices
30
What are the three general types of distillation plants?
- steam distilling plants
- waste heat distilling plant
- vapor compression type
31
What type of distillation plant uses steam supplied by power plant or auxiliary border?
steam distilling plant
32
What type of distillation plant uses heat derived from diesel engine jacket water?
waste heat distilling plant
33
What type of distillation plant uses electrical energy?
vapor compression type
34
Which water production plant uses:
- single or triple pass
- removes particles as small as 1 micron
- high pressure pump, filtering water boosted up in pressure
reverse osmosis
35
For single pass reverse osmosis what else is required?
additional disinfection
36
Which naval vessel usually uses triple pass RO?
submarines
37
Potable water tanks should never be filled with?
ballast water
38
The potable water tank coating must meet what standards?
ANSI/NSF
39
The vent and overflow lines openings are screened with?
18 gauge or finer, non corrosive mesh
40
What are the unauthorized termination points for the vents and overflow lines?
- food service spaces
- medical spaces
- toilets
- electrical or electronic rooms
- exterior of ship
41
If a manhole is on the top of a tank that is also a deck it must be how far above deck?
1/2'' curb or coaming above deck
42
Disinfection of the sounding rods
100 ppm FAC for 2 minutes
43
The sounding tubes must be labeled?
POTABLE WATER USE ONLY
44
What color are the filling connections?
dark blue
45
How far off the deck must filling connections be?
18 inches
46
Potable hot water settings should be set so the temperature at the fixture is?
120 degrees F at the water tap
47
What are the requirements for potable water hose lockers?
- vermin proof
- locked
- 18 inches off the deck
- printed disinfection instructions for the hoses and risers inside the locker
48
What are the requirements for labeling hoses?
- POTABLE WATER ONLY
- 1 inch high letters every 10 feet
- couplings dark blue
49
What are the requirements for labeling valves for receiving or supplying potable water (risers)?
- POTABLE WATER ONLY
- 1/4 high inch letters
- valves and valve handles must be dark blue
50
What are the requirements for labeling sounding tubes?
- labeled with ID plate
| - sounding tube cap will be dark blue
51
The potable water hose lockers will be labeled with?
-POTABLE WATER HOSE
52
Halogen shall be tested prior to?
initial transfer of water
53
If halogen residual is not within minimum standard of _______ the ship must?
0. 2 ppm
| - ship must boost halogen residual
54
What is the minimum standard for halogen residual?
0.2 ppm
55
Potable water connections between shore and ship must be made or supervised by?
authorized shore station personnel or properly trained ship personnel
56
Who notifies MDR prior to making potable water hose connections?
Engineering
57
Who tests the halogen residual?
| Makes recommendations to who?
- MDR
| - engineering dept
58
The potable water hose shall not be submerged in?
harbor water
59
The minimum halogen residual requirements for water with doubtful quality is?
2.0 ppm
60
For ship-to-shore procedures, after removing shore cap, flush pier side potable water outlet for?
15-30 seconds
61
When doing ship-to-shore procedures, immerse the outlet and rinse fitting in a solution of?
100 ppm FAC for at least 2 minutes
62
Flush water to waste for how long?
15-30 seconds
63
Disinfect shipboard riser connections with?
100 ppm FAC solution
64
Other FDA listed food contact surface disinfectants such as iodine may be used if approved by the?
MDR
65
When doing ship-to-ship water transfer who disinfects the potable water riser connections?
both ships do their own
66
What is a quick indication of water that may have been improperly treated or handled?
halogen residual
67
What testing ensures the fitness for human consumption?
bacteriological testing
68
What is done to assess adequacy of disinfection process?
bacteriological testing
69
Testing requirements conform to the latest edition of?
Standard methods for the examination of water and wastewater
70
The Standard methods for the examination of water and wastewater is published by?
- American public health association
- American water works association
- Water pollution control federation
71
What is exempt from chemical quality?
naval vessels
72
Temperature/pH monitoring is preformed by?
engineering dept
73
Halogen is more effective at ___ water temps
warmer
74
Chloride shall not exceed _____ equivalent per million (epm) or _____ ppm
0. 065 epm
| 2. 3 ppm
75
Salinity testing must not be conducted on?
halogenated water
76
Surface ship must maintain a ____ FAC or TABR in the potable water after initial treatment
0.2 ppm
77
If water is received from an unapproved source the minimum halogen residual must be?
2.0 ppm FAC
78
Halogen testing is completed by the MDR when?
- daily
- with BACTI
- prior to receipt of potable water
79
Which dept is responsible for checking the halogen level after 30 minutes contact time?
engineering dept
80
What guidance is followed for the maximum contaminant level (MCL) for coliform bacteria?
EPA established MCL
81
For 400 personnel or less how many samples need to be preformed for MCL?
no less than 4 samples
82
For 400-800 personnel or less how many samples need to be preformed for MCL?
8 samples
83
For more than 800 personnel or less how many samples need to be preformed for MCL?
12 samples
84
Samples for MCL will include ____ of ship's ice machines and _____ of the ship's potable water tanks
1/4 of both ice machines and potable water tanks
85
How often will emergency potable water tank will be tested?
monthly
86
What are the shipboard EPA approved methods for bacteriological testing?
- colilert
| - colisure
87
For repeat monitoring, each positive sample will require how many repeat samples?
3
88
Where are repeat samples for positive samples taken from?
- original source
- one upstream (no more than 5 connections away)
- one downstream (no more than 5 connections away)
89
Repeat monitoring for positive samples will be collected within _____ hours of positive sample
24 hours
90
Chlorine or bromine residuals are determined by which test?
dpd test
91
DPD #1 tests for?
FAC or TBR
92
DPD #4 tests for?
chloramines, total chlorine residual
93
Halogen testing can be accomplished using which two test kits?
- color comparator test kit
| - portable spectrophotometer
94
The color comparator accuracy is?
+- 10 percent
95
The portable spectrophotometer accuracy is?
+- 2 percent
96
What is the advantage of the portable spectrophotometer over the color comparator?
eliminates human visual subjectivity
97
When is bacteriological testing done?
- weekly
- abnormal halogen
- suspicion of contamination
- after repairs to potable water system
98
For bacteriological testing, incubate samples for?
-24 hours at 35 degrees C
99
Colilert testing results, clear is?
negative
100
Colilert testing results, yellow is?
positive for total coliform
101
Colilert testing results, fluorescent yellow, under UV light is?
positive for fecal coliform
102
Colisure testing results, yellow is?
negative
103
Colisure testing results, magenta is?
positive for total coliforms
104
Colisure testing results, fluorescent light blue is?
positive for E. coli
105
What are the two approved methods for disinfecting shipboard potable water?
- chlorine
| - bromine
106
What type of disinfection system injects hypochlorite into the system?
in-line chlorinators
107
What are the two type of brominators?
- in line brominator
| - recirculation
108
What is the least desirable method of water disinfection?
-manual chlorine disinfection (batch method)
109
What is the disinfectant of choice?
calcium hypochlorite
110
What is the clear, slightly yellow liquid that is from calcium granules settling at the bottom of the water during disinfection?
supernatant
111
Excess calcium in the water will:
- demand more chlorine or bromine than water without calcium
| - clog valves and screens
112
What is the chlorine dosage rule of thumb?
once oz HTH per 5,000 gallons of water equals 1.0 ppm FAC
113
Which method of potable water disinfection is this?
- add chlorine to get 10 ppm FAC
- hold for 24 hours
method 1
114
Which method of potable water disinfection is this?
- apply 200 ppm FAC
- flush pipes with 10 ppm FAC
- contact time: 30 mins
method 2
115
Which method of potable water disinfection is this?
- fill 5% of tank with 50 ppm FAC
- hold for 6 hours
- fill tank, hold for 24 hours
method 3
116
What is the chlorination method if taste/odor problems cannot be identified?
- chlorinate to 5.0 ppm FAC
| - distribute at 2.0 ppm FAC
117
The use of steam to resolve taste/odor problems in potable water requires approval from?
NAVSEASYSCOM
118
How will it be determined that the steam method for taste/odor issues of potable water might be feasible?
- boil a sample for 1 min
| - if taste/odor is resolved, might be feasible
119
When requesting outside assistance for taste/odor problems who will be contacted?
contact NEPMU via TYCOM medical officer
120
What potable water disinfecting agent is:
- corrosive
- chemically active
- contact with another oxidizable material may result in spontaneous combustion
calcium hypochlorite HTH 65-70%
121
calcium hypochlorite HTH 65-70% comes in what size bottles?
6 oz
122
When storing calcium hypochlorite HTH 65-70% what are the criteria for the holes drilled into the storage box?
three 1/4'' holes drilled into the bottom of the box
123
calcium hypochlorite HTH 65-70% storage boxes won't be stored in:
- machinery spaces
- flammable liquids storeroom
- berthing space
- paint storeroom
- oil and water test lab areas
124
How much calcium hypochlorite HTH 65-70% shall be maintained in ready to use stock at any time?
no more than a 7 day supply
125
Bulk stock of calcium hypochlorite HTH 65-70% may not be stored in an area where the temperature will not exceed?
100 degrees F
126
no more than ______ bottles of calcium hypochlorite HTH 65-70% shall be stored for bulk stock
no more than 48 six oz bottles
127
What is the label for all lockers, bins, and enclosures containing HTH?
"hazardous material, calcium hypochlorite"
| red letters with a white background
128
Bromine storage lockers must have a hazardous warning plate IAW?
NSTM chapter 533
129
What is the normal shelf life of bromine?
2 years from date of manufacture
130
How long is the potable water log kept on record?
| Who keeps it?
- 2 years
| - MDR
