6.13 Flashcards

1
Q

Coaming

A

A raised frame to keep out water

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2
Q

Distillation

A

Total process of distilling plant forms. IE Evaporation and condensation.

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3
Q

Free available Chlorine

A

The amount of Chlorine available after demand is met.
- Hypochlorous
- Hypochlorite ions

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4
Q

Potable water

A

Water that can be consumed or used for human consumption

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5
Q

Reverse Osmosis

A

Water purification process. Application of reverse pressure that causes solvent to flow through a semipermeable membrane

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6
Q

Colilert / Colisure

A

Test used to detect ECOLI in water sources

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7
Q

Total Coliform

A

Found in animals and human digestive systems, the test is a good indicator for Ecoli. Coliform itself is harmless.

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8
Q

Responsibilities of NAVSEASYSCOM in relation to shipboard potable water systems. (3)

A
  • Construction
  • Design
  • Maintenance -
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9
Q

What is the responsibility of NAVFACENGCOM?

A

Creating instructions for ship to shore potable water connections and providing approved water while berthed at a naval facility.

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10
Q

What are BUMEDS responsibilities?

A
  • Creating health standards for water quality afloat
  • Creating instructions for afloat water quality requirements
  • Creating requirements for medical surveillance of potable water systems
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11
Q

Responsibilities for Area, Fleet, and subordinate commanders.

A
  • Adequate water sanitation standards are provided
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12
Q

Responsibilities of Commanding Officers

A
  • Creating a Water sanitation bill
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13
Q

Responsibilities of the Engineering Department

A

-Implement requirements from NAVSEASYSCOM
-Supply and treatment of potable water
- Ensure connections are made by authorized personnel
- Halogen and PH testing

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14
Q

MDR responsibilities

A

-Conduct medical surveillance of potable water system
- BACTI
- Daily Halogen testing
- Notify CO of discrepancies

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15
Q

Number of gallons allotted per man per day.

A

50

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16
Q

Water hours

A

2 gallons per man per day
Sea water used for marine sanitation
happens when not enough water for everyone

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17
Q

Approved sources of potable water for naval ships

A

Navsea approved methods
Shore to ship from approved and unapproved

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18
Q

NAVSEA approved methods of creating potable water

A

Distillation, RO, other

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19
Q

Who decides of approved public water systems?

A

EPA

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20
Q

Who can deliver potable water ship to shore that is not US related?

A

British royal navy , Canada forces, Australian Navy, other OCONUS locations that have been okay’d by NEPMU

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21
Q

Shore to ship delivery of potable water from an unapproved source

A

Allowed as long as water is brought to 2 PPM before brought on

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22
Q

What are the types of water production plants?

A

Distillation, RO,

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23
Q

Types of Distillation. (3)

A

Steam- from power plant
Waste heat - heat from diesel eng jacket
Vapor Compression -Electrical

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24
Q

Types of Reverse osmosis and what they do

A

Single Pass - Requires additional disinfection
Triple pass - No further disinfection needed

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25
Q

Shipboard water system components

A
  • Potable water tank
  • Vents and overflow lines
  • Manholes
  • Water level measurement
  • Filling lines
  • Piping
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26
Q

Potable water tank coatings abide by what standard?

A

NSF/ ANSI

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27
Q

Types of water level measurement tools, and what they have to be labeled

A

Automatic
Petcocks (lol)
Sounding tubes (lol gay)
Must be labeled “POTABLE WATER USE ONLY”

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28
Q

What color are Fillin lines for potable water?

A

Dark blue

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29
Q

How far off the deck must hose valves and risers be?

A

18 Inches

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30
Q

How hot should potable water come out at the water tap (max)?

A

120F

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31
Q

What is a sloped self draining pipe tunnel used for?

A

When potable water pipes pass through non potable water tanks

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32
Q

Basic rules of potable water hose lockers

A

18 inches off the deck
Locked
Vermin proof
instructions for disinfecting hose

33
Q

Can potable water hoses be used for anything else?

A

No

34
Q

PW hoses are labeled how?

A

Every 10 feet with POTABLE WATER ONLY in 1/4 in high letters

35
Q

PW Valves are labeled how?

A

POTABLE WATER ONLY in 1/4 in high letters

36
Q

PW hose lockers are labeled how?

A

POTABLE WATER HOSE

37
Q

What is the halogen residual minimum standard? What happens if is low?

A

.2 PPM, receives a boost

38
Q

Who notifies the MDR prior to making a PW hose connection before transfer?

A

Engineering

39
Q

What do we do if water is from a doubtful source?

A

Boost to 2.0 PPM

40
Q

When receiving water ship to shore, what do we do to the valves, risers and outlets?

A

Sanitize in 100 PPM FAC solution and wait 2 minutes contact time

41
Q

What is one other solution we can use to disinfect risers, valves and outlets?

A

Iodine

42
Q

Types of Halogen residual testing

A

Chlorine, bromine

43
Q

Absence of Halogen in ships PW indicates what?

A

Contamination

44
Q

Why do we conduct Bacteriological testing of PW?

A

Ensure fit to consume
Assess adequacy of disinfection process

45
Q

What are the testing requirements for PW?

A
  • Conform to latest edition of “ Standard for exam of water and wastewater
  • Chemical quality
  • Temp / PH
  • Salinity
  • Halogen Res
  • MicroBio quality
46
Q

Who conducts Temp and Ph checks for PW?

A

Engineering

47
Q

Can we test Salinity on halogenated water? Explain.

A

No, Halogen levels will give false readings
Chloride cant exceed .065 EPM

48
Q

What the minimum Halogen residual for Surface ships? Is it okay if FAC reads low at the faucet?

A

.2 ppm FAC. Yes, FAC is used in transit of water through pipes

49
Q

FAC for doubtful quality water

A

2.0 PPM FAC

50
Q

When does the MDR conduct Halogen testing?

A

Daily, FAC and BACT
Prior to receipt of water

51
Q

How long do Enjos have to wait to check halogen levels?

A

30 min

52
Q

How often is MicroB Quality checked? How many samples are needed in relation to the amount of peope?

A

Weekly
4 for 400
8 for 800
12 for 800+

53
Q

When conducting MicroB checks, how many ice machines get checked?

A

1/4

54
Q

How Often is the emergency PW tank tested?

A

Monthly

55
Q

Approved methods of BACT testing

A

Colilert / Colisure

56
Q

DPD 1

A

FAC, TBR

57
Q

DPD 4

A

Chloramine residual

58
Q

2 types of test kits for DPD testing

A

Color compare (shitty one)
Portable spectro (Cool one)

59
Q

For Colilert/ Colisure, how much doe we collect and whats in the bag?

A

100 ml, Sodium thiosulfate

60
Q

How long due Colilert/ Colisure samples incubate and at what temperature should they bet at?

A

24 hours at 35 C

61
Q

Signs of positive Colilert

A

Florescent yellow with UV = Fecal

62
Q

Signs of Positive Colisure

A

Florescent blue with UV = E coli

63
Q

2 chemicals approved for disinfecting water

A

Chlorine and Bromine

64
Q

Slightly yellow water due to HTH is called what?

A

Supernatant

65
Q

Rule of thumb for Chlorine dosage?

A

One ounce HTH per 5000 gallons = 1 ppm

66
Q

Method 1 disinfection of PW tanks

A

Overflow, 10ppm, hold for 24 hours, drain

67
Q

Method 2 disinfection of PW tanks

A

Spray 200ppm FAC to all surfaces, Flush outlets and inlets, wait 30 min, refill with correct water

68
Q

Method 3 Disinfection

A

5% tank vol with 50 ppm FAC, hold for 6 hours, add PW, hold for 24 hrs, drain and refill

69
Q

What can we do to control taste and odor of PW?

A

Chlorinate to 5 PPM
Steam Method
Request Ass. from NEPMU/ Tycom

70
Q

Ready use box for HTH cannot be installed where?

A

Places where there’s excess fumes, or chance of flammability

71
Q

HTH box cant exceed what temp?

A

100

72
Q

HTH box has to be how far from heat sources (140F)

A

5 ft

73
Q

What label is on the HTH boxes?

A

Red letters, white back, “HAZARDOUS MATERIAL CALCIUM HYPOCHLORITE”

74
Q

Lifespan of Bromine Cartridges?

A

2 years

75
Q

Where will the water bill be posted?

A

Conspicuous areas where PW is processed

76
Q

What’s on the Water Bill?

A

(A lot of things you should look) but basically it contains everything about the PW process and procedures

77
Q

How long does the MDR maintain the Potable Water Log?

A

2 years

78
Q
A