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6.13 Manage Potable Water Surveillance Flashcards

1
Q

Coaming

A

A raised frame to keep out water

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2
Q

Distillation

A

Total process the distilling plant forms, including evaporation and condensation

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3
Q

FAC

A

Free Available Chlorine

Chlorine available in the forms of Hypochlorous acid and Hypochlorite ions

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4
Q

Micro

A

unit of length, one millionth of a meter

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5
Q

POU

A

Point of Use

treatment device applied to a single tap

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6
Q

Reverse Osmosis

A

RO
reverse of the natural osmosis achieved by external application sufficient reverse pressure to cause the solvent to flow in it UNNATURAL direction

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7
Q

Colelert/Colisure

A

test used to detect total coliform and EColi

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8
Q

Total Coliform

A

Mostly harmless bacteria that live in soil and water, and guts of animals

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9
Q

E Coli

A

Fecal coliform bacteria commonly found in intestines of animals and humans

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10
Q

NAVSEASYSCOM

A

Responsible for shipboard potable water systems, including treatment facilities

  • design
  • construction
  • maintenance
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11
Q

NAVFACENGCOM

A

Promulgating instructions

ship-to-shore potable water connections

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12
Q

Chief, BUMED

A

establishing and promulgating health standards for water quality AFLOAT

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13
Q

Area, Fleet and subordinate commanders

A

issuing necessary implementing directives

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14
Q

Commanding Officer

A

Promulgating a water sanitation bill

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15
Q

Engineering Department

A

responsible to CO for implementing requirements of NAVSEASYSCOM
Halogen and pH testing

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16
Q

Who can make a ship to ship or ship to shore connection?

A

Authorized personnel ONLY

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17
Q

Medical Department Rep

A

Bacteriological Testing (BACTI)
Daily Halogen testing
notify commanding officer of ANY discrepancies

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18
Q

Minimum Usage Requirements

A

50 Gals per person per day
“Water Hours”
Not less than 2 gals per person per day

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19
Q

When do you avoid making water?

A

Harbors or from polluted seawater
while in close formation
discharging waste, bilge water forward of the saltwater intakes

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20
Q

Other areas we can take water from

A

British Royal Navy
Canadian Forces
Royal Australian Navy

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21
Q

Shore to Ship from unapproved source

A

treated at a minimum of 2.0 ppm prior to receipt

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22
Q

Where can sea water be used aboard ships?

A

fire mains, decontamination, and marine sanitation devices

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23
Q

Types of Distillation Plants

A

steam distilling plants - steam by power plant
waste heat distilling plants - uses heat
vapor compression - electrical

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24
Q

Types of reverse osmosis

A

single or triple pass

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25
Where is triple pass RO used?
Submarines
26
Single Pass RO
additional disinfection REQUIRED
27
Triple Pass RO
Subs | additional disinfection NOT required
28
When can potable water tanks be filled with ballast water?
Never, unless necessary for survival of ship
29
Potable water tank coating
NSF/ANSI standard
30
Where can vents and overflow lines not be placed?
``` food service spaces medical spaces toilets electrical or electronic rooms exterior of the ship ```
31
Manholes
top of tank is 1/2" above deck (curb)
32
Types of water level measurement
automatic level gauges petcocks sounding tubes
33
Sounding tubes
will remain inside sounding tubes 100ppm FAC for 2 mins POTABLE WATER USE ONLY
34
Filing Connections
Dark blue 18 in off deck turned facing downward screw caps have keeper chains
35
What must potable water to non potable water tanks have?
air gap | backflow prevention
36
Potable hot water settings
120F at water tap
37
Portable Water Hose Lockers
vermin proof locked 18 inches off deck WATER BILL POSTED CONSPICUOUSLY INSIDE LOCKER
38
Potable water hose
examined routinely capped or coupled and stored in hose locker SHALL NOT BE USED FOR ANY OTHER PURPOSE
39
Hose labeling requirements
POTABLE WATER ONLY 1 inch high letters every 10feet dark blue
40
Valves labeling requirement
POTABLE WATER ONLY | 1/4inch high
41
When should halogen testing occur during potable water transfer?
Prior to transfer
42
Who will notify MDR prior to making potable water hose connection?
Engineering
43
Potable waters from doubtful quality need what?
be investigated and examined thoroughly commanding officer must be advised minimum halogen residual must be 2.0ppm after 30 min contact time
44
What is the minimum halogen if from an approved source?
0.2 ppm after 30 mins
45
Two bacteria's that we test for?
E Coli | Total Coliform
46
What are two DPD test?
DPD 1 - Tests for FAC or TBC | DPD 4 - Tests for chloramines (total chlorine) residual
47
What is the color comparator accuracy?
+/- 10%
48
What is the portable spectrophotometer accuracy?
+/- 2%
49
Two types of brominators
``` In line (proportioning) recirculation ```
50
When do you need to compare the same with the color comparator?
Within 60 seconds
51
How much water is used for the test tube?
10mL
52
How often is halogen testing completed?
daily
53
How often is BACTI testing
weekly
54
What is the only EPA approved methods for BACTI testing?
Colilert | Colisure
55
Incubation times for BACTI
24 hours at 35C
56
Sources of contamination
bulkheads between potable water tanks and fuel ballast tanks bilges wastewater tanks
57
What is the least desirable method for water disinfection?
batch method
58
What is the disinfection of choice?
calcium hypochlorite
59
Supernatant
clear, slightly yellow liquid
60
How often is emergency potable water tested?
monthly
61
using bromine vs chlorine
chlorine - in port | bromine - out at sea
62
How much water is collected for BACTI sample?
100mL
63
Types and strengths of chlorine used
5% Sodium Hypochlorite (liquid) 10% Sodium Hypochlorite (liquid) 65-70% Calcium Hypochlorite (dry)
64
Method 1
``` fill tank add chlorine to 10ppm FAC hold 24HOURS drain refill BACTI ```
65
Method 2
``` Spray 200ppm all tank surfaces flush inlet/outlet w/ 10ppm FAC hold for 30mins refill BACTI ```
66
Method 3
``` fill 5% tank w/ 50ppm FAC hold 6 hours add water until full, hold for 24hours drain refill BACTI ```
67
Who can approve the used of steam?
NAVSEASYSCOM
68
How many days of HTH supply can be held?
7 days
69
Maximum amount of bottles HTH in one locker?
48 | 6oz bottles
70
What color is the label on HTH box?
red letters with white background
71
Controlling taste and odor
Chlorination Method | Steam Method
72
Chlorination Method
chlorinate to 5.0ppm | distribute at 2.0ppm
73
Steam Method
boil sample water for one min | taste to see if odor/taste has improved prior to requesting NAVSEASYSCOM
74
How many holes are on metal box storing HTH?
3 1/4 inch holes
75
HTH
Calcium Hypochlorite
76
HTH boxes can not be stored where
``` machinery spaces flammable liquids storeroom berthing space paint storeroom oil and water test lab areas ```
77
All HTH lockers are labeled with
"Hazardous materials, calcium hypochlorite"
78
Storing bromine cartridges
slightly corrosive | shelf life = two years from date of manufacture
79
contents of water sanitation bill
``` responsibility sources connection procedures potable water hoses storage tanks disinfection procedures halogen residual testing bacteriological testing temperature, pH and salinity testing disinfection of tanks and distribution system records ```
80
How long is the potable water log kept?
2 years
81
Water testing log includes:
``` time and date of sample location of ship sampling site - tac number source - sink, scuttlebutt, etc halogen residual bacteriological testing (present/absent) action taken for discrepancies ```

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