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Prev Med Test 2 :( > 6.13 > Flashcards

6.13 Flashcards

(78 cards)

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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
Shipboard water system components
- Potable water tank - Vents and overflow lines - Manholes - Water level measurement - Filling lines - Piping
26
Potable water tank coatings abide by what standard?
NSF/ ANSI
27
Types of water level measurement tools, and what they have to be labeled
Automatic Petcocks (lol) Sounding tubes (lol gay) Must be labeled "POTABLE WATER USE ONLY"
28
What color are Fillin lines for potable water?
Dark blue
29
How far off the deck must hose valves and risers be?
18 Inches
30
How hot should potable water come out at the water tap (max)?
120F
31
What is a sloped self draining pipe tunnel used for?
When potable water pipes pass through non potable water tanks
32
Basic rules of potable water hose lockers
18 inches off the deck Locked Vermin proof instructions for disinfecting hose
33
Can potable water hoses be used for anything else?
No
34
PW hoses are labeled how?
Every 10 feet with POTABLE WATER ONLY in 1/4 in high letters
35
PW Valves are labeled how?
POTABLE WATER ONLY in 1/4 in high letters
36
PW hose lockers are labeled how?
POTABLE WATER HOSE
37
What is the halogen residual minimum standard? What happens if is low?
.2 PPM, receives a boost
38
Who notifies the MDR prior to making a PW hose connection before transfer?
Engineering
39
What do we do if water is from a doubtful source?
Boost to 2.0 PPM
40
When receiving water ship to shore, what do we do to the valves, risers and outlets?
Sanitize in 100 PPM FAC solution and wait 2 minutes contact time
41
What is one other solution we can use to disinfect risers, valves and outlets?
Iodine
42
Types of Halogen residual testing
Chlorine, bromine
43
Absence of Halogen in ships PW indicates what?
Contamination
44
Why do we conduct Bacteriological testing of PW?
Ensure fit to consume Assess adequacy of disinfection process
45
What are the testing requirements for PW?
- Conform to latest edition of " Standard for exam of water and wastewater - Chemical quality - Temp / PH - Salinity - Halogen Res - MicroBio quality
46
Who conducts Temp and Ph checks for PW?
Engineering
47
Can we test Salinity on halogenated water? Explain.
No, Halogen levels will give false readings Chloride cant exceed .065 EPM
48
What the minimum Halogen residual for Surface ships? Is it okay if FAC reads low at the faucet?
.2 ppm FAC. Yes, FAC is used in transit of water through pipes
49
FAC for doubtful quality water
2.0 PPM FAC
50
When does the MDR conduct Halogen testing?
Daily, FAC and BACT Prior to receipt of water
51
How long do Enjos have to wait to check halogen levels?
30 min
52
How often is MicroB Quality checked? How many samples are needed in relation to the amount of peope?
Weekly 4 for 400 8 for 800 12 for 800+
53
When conducting MicroB checks, how many ice machines get checked?
1/4
54
How Often is the emergency PW tank tested?
Monthly
55
Approved methods of BACT testing
Colilert / Colisure
56
DPD 1
FAC, TBR
57
DPD 4
Chloramine residual
58
2 types of test kits for DPD testing
Color compare (shitty one) Portable spectro (Cool one)
59
For Colilert/ Colisure, how much doe we collect and whats in the bag?
100 ml, Sodium thiosulfate
60
How long due Colilert/ Colisure samples incubate and at what temperature should they bet at?
24 hours at 35 C
61
Signs of positive Colilert
Florescent yellow with UV = Fecal
62
Signs of Positive Colisure
Florescent blue with UV = E coli
63
2 chemicals approved for disinfecting water
Chlorine and Bromine
64
Slightly yellow water due to HTH is called what?
Supernatant
65
Rule of thumb for Chlorine dosage?
One ounce HTH per 5000 gallons = 1 ppm
66
Method 1 disinfection of PW tanks
Overflow, 10ppm, hold for 24 hours, drain
67
Method 2 disinfection of PW tanks
Spray 200ppm FAC to all surfaces, Flush outlets and inlets, wait 30 min, refill with correct water
68
Method 3 Disinfection
5% tank vol with 50 ppm FAC, hold for 6 hours, add PW, hold for 24 hrs, drain and refill
69
What can we do to control taste and odor of PW?
Chlorinate to 5 PPM Steam Method Request Ass. from NEPMU/ Tycom
70
Ready use box for HTH cannot be installed where?
Places where there's excess fumes, or chance of flammability
71
HTH box cant exceed what temp?
100
72
HTH box has to be how far from heat sources (140F)
5 ft
73
What label is on the HTH boxes?
Red letters, white back, "HAZARDOUS MATERIAL CALCIUM HYPOCHLORITE"
74
Lifespan of Bromine Cartridges?
2 years
75
Where will the water bill be posted?
Conspicuous areas where PW is processed
76
What's on the Water Bill?
(A lot of things you should look) but basically it contains everything about the PW process and procedures
77
How long does the MDR maintain the Potable Water Log?
2 years
78

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