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PREV MED > 6.13 Manage Potable Water Surveillance > Flashcards

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
Q

Where is triple pass RO used?

A

Submarines

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26
Q

Single Pass RO

A

additional disinfection REQUIRED

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27
Q

Triple Pass RO

A

Subs

additional disinfection NOT required

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28
Q

When can potable water tanks be filled with ballast water?

A

Never, unless necessary for survival of ship

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29
Q

Potable water tank coating

A

NSF/ANSI standard

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30
Q

Where can vents and overflow lines not be placed?

A 
food service spaces 
medical spaces
toilets 
electrical or electronic rooms 
exterior of the ship
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31
Q

Manholes

A

top of tank is 1/2” above deck (curb)

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32
Q

Types of water level measurement

A

automatic level gauges
petcocks
sounding tubes

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33
Q

Sounding tubes

A

will remain inside sounding tubes
100ppm FAC for 2 mins
POTABLE WATER USE ONLY

34
Q

Filing Connections

A

Dark blue
18 in off deck
turned facing downward
screw caps have keeper chains

35
Q

What must potable water to non potable water tanks have?

A

air gap

backflow prevention

36
Q

Potable hot water settings

A

120F at water tap

37
Q

Portable Water Hose Lockers

A

vermin proof
locked
18 inches off deck
WATER BILL POSTED CONSPICUOUSLY INSIDE LOCKER

38
Q

Potable water hose

A

examined routinely
capped or coupled and stored in hose locker
SHALL NOT BE USED FOR ANY OTHER PURPOSE

39
Q

Hose labeling requirements

A

POTABLE WATER ONLY
1 inch high letters every 10feet
dark blue

40
Q

Valves labeling requirement

A

POTABLE WATER ONLY

1/4inch high

41
Q

When should halogen testing occur during potable water transfer?

A

Prior to transfer

42
Q

Who will notify MDR prior to making potable water hose connection?

A

Engineering

43
Q

Potable waters from doubtful quality need what?

A

be investigated and examined thoroughly
commanding officer must be advised
minimum halogen residual must be 2.0ppm after 30 min contact time

44
Q

What is the minimum halogen if from an approved source?

A

0.2 ppm after 30 mins

45
Q

Two bacteria’s that we test for?

A

E Coli

Total Coliform

46
Q

What are two DPD test?

A

DPD 1 - Tests for FAC or TBC

DPD 4 - Tests for chloramines (total chlorine) residual

47
Q

What is the color comparator accuracy?

A

+/- 10%

48
Q

What is the portable spectrophotometer accuracy?

A

+/- 2%

49
Q

Two types of brominators

A 
In line (proportioning)
recirculation
50
Q

When do you need to compare the same with the color comparator?

A

Within 60 seconds

51
Q

How much water is used for the test tube?

A

10mL

52
Q

How often is halogen testing completed?

A

daily

53
Q

How often is BACTI testing

A

weekly

54
Q

What is the only EPA approved methods for BACTI testing?

A

Colilert

Colisure

55
Q

Incubation times for BACTI

A

24 hours at 35C

56
Q

Sources of contamination

A

bulkheads between potable water tanks and fuel
ballast tanks
bilges
wastewater tanks

57
Q

What is the least desirable method for water disinfection?

A

batch method

58
Q

What is the disinfection of choice?

A

calcium hypochlorite

59
Q

Supernatant

A

clear, slightly yellow liquid

60
Q

How often is emergency potable water tested?

A

monthly

61
Q

using bromine vs chlorine

A

chlorine - in port

bromine - out at sea

62
Q

How much water is collected for BACTI sample?

A

100mL

63
Q

Types and strengths of chlorine used

A

5% Sodium Hypochlorite (liquid)
10% Sodium Hypochlorite (liquid)
65-70% Calcium Hypochlorite (dry)

64
Q

Method 1

A 
fill tank
add chlorine to 10ppm FAC
hold 24HOURS 
drain
refill
BACTI
65
Q

Method 2

A 
Spray 200ppm all tank surfaces 
flush inlet/outlet w/ 10ppm FAC
hold for 30mins 
refill
BACTI
66
Q

Method 3

A 
fill 5% tank w/ 50ppm FAC
hold 6 hours 
add water until full, hold for 24hours 
drain
refill
BACTI
67
Q

Who can approve the used of steam?

A

NAVSEASYSCOM

68
Q

How many days of HTH supply can be held?

A

7 days

69
Q

Maximum amount of bottles HTH in one locker?

A

48

6oz bottles

70
Q

What color is the label on HTH box?

A

red letters with white background

71
Q

Controlling taste and odor

A

Chlorination Method

Steam Method

72
Q

Chlorination Method

A

chlorinate to 5.0ppm

distribute at 2.0ppm

73
Q

Steam Method

A

boil sample water for one min

taste to see if odor/taste has improved prior to requesting NAVSEASYSCOM

74
Q

How many holes are on metal box storing HTH?

A

3 1/4 inch holes

75
Q

HTH

A

Calcium Hypochlorite

76
Q

HTH boxes can not be stored where

A 
machinery spaces 
flammable liquids storeroom 
berthing space 
paint storeroom 
oil and water test lab areas
77
Q

All HTH lockers are labeled with

A

“Hazardous materials, calcium hypochlorite”

78
Q

Storing bromine cartridges

A

slightly corrosive

shelf life = two years from date of manufacture

79
Q

contents of water sanitation bill

A 
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
Q

How long is the potable water log kept?

A

2 years

81
Q

Water testing log includes:

A 
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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