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New class 1911 > PMED2 > Flashcards

PMED2 Flashcards

1
Q

Navmed P-5010-6

A

Water supply afloat

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2
Q

What is a raised frame to keep out water?

A

Coaming

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3
Q

What is the process of distilling plant forms, including evaporation and condensation?

A

Distillation

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4
Q

What is chlorine available in the forms of hypochlorous acis and hypochlorite forms?

A

Free available chlorine

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5
Q

What are the two forms of FAC

A

Hypochlorus and Hypochlorite

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6
Q

What is a unit of length, one millionth of a meter?

A

Micron

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7
Q

Water that is suitable for human consumption, bathing, laundry, personal hygiene?

A

Potable Water

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8
Q

What is the reverse of natural osmosis achieved by external application of sufficient reverse pressure to cause the solvent to flow in its unnatural direction?

A

Reverse Osmosis RO

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9
Q

What are tests used to detect total coliform and E-coli in potable water?

A

Colilert and Colisure

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10
Q

What are a group of closely related mostley harmless bacteria that live in water as well as in the guts of animals?

A

Total Coliform

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11
Q

What can indicate the general quality of the water and the likelyhood of water being contaminated with fecal matter?

A

Total Coliform

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12
Q

What is the standard of drinking water?

A

The presence or absence pf total coliform bacteria

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13
Q

What does the presence of E-Coli signify

A

Recent sewage or animal waste contamination as sewage may contain many types of disease causing organisms.

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14
Q

Who is responsible for shipboard potable water systems, including treatment facilities and processes to assure that safe drinking water is available at all times. They regulate:

Design
Construction
Maintenance

A

Naval Sea Systems Command (NAVSEASYSCOM)

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15
Q

Who is responsible for promulgating instructions for ship-to-shore potable water connections and for providing potable water from an approved source when the ship is berthed at a naval facility?

A

Naval facilities engineering command (NAVFACENGCOM)

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16
Q

Who is responsible for establishing and promulgating health standards for water quality afloat?

A

BUMED

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17
Q

Who promulgates appropriate instructions, notices and other publications to reflect afloat water quality requirements?

A

BUMED

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18
Q

Who establishes the shipboard requirements for medical surveillance of potable water systems?

A

BUMED

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19
Q

Who is responsible for issuing the necessary implementing directives to ensure adequate water sanitation standards are provided and enforced in each ship in the command?

A

Area, fleet and subordinate commanders

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20
Q

Whos responsible for promulgating awater sanitation bill to ensure that procedures for receipt, transfer, treatment, storage, distribution, and surveillance are provided and followed?

A

CO

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21
Q

Who is responsible to the CO for implementing the requirements of NAVSEASYSCOM

A

Engineering Dept.

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22
Q

What are the responsibilities of the Eng. Dept for potable water afloat

A
  • Supply and treatment of potable water
  • Potable water system components (see TG)
  • Ensure all connections are made only by auth. personnel, or in their absence ship personnel who are properly supervised by AUTHORIZED PERSONNEL.

-Halogen and PH testing.

  • Ensuring minimal Halogen residules before adding to the water distribution system.
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23
Q

Who is responsible for Conducting a medical surveillance profram of the potable water system?

A

MDR

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24
Q

What needs to be done for the med. surveillance program? For water afloat

A
  1. Bacteriological testing
  2. DAILY halogen testing
  3. MDR shall notify the CO of any discrepancies observed in the potable water distribution system.
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25
Q

Minimum water usage requirements?

A

50 gallons per day specified by NAVSEASYSCOM.

During water hours it is no less than 2 gallons per man per day.

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26
Q

What are 5 approved water sources? For water at sea

A
  1. Distillation, RO, or other NAVSEA approved water production technology.
  2. Shore to ship delivery from approved source.
  3. Shore to Ship from unapproved source.
  4. Ship to ship
  5. Sea water for fire mains, decon, and marine sanitation devices.
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27
Q

When should you avoid making water?

A

Harbors or puluted sea water

When ships are close in formation

When stripping or discharging waste or bilge water forward of the saltwater intakes

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28
Q

Who approves public water systems?

A

EPA

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29
Q

What is the required ppm to recieve water form unnaproved sources?

A

2.0ppm

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30
Q

What is the required ppm from approved sources?

A

0.2ppm

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31
Q

What are the types of water production plants?

A

Distillation

Reverse Osmosis

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32
Q

What are the diffrent types of distillation plants?

A

Steam distilling plants

Waste heat distilling plant

Vapor Compression type

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33
Q

What are the types of RO?

A

Single and triple pass

Single - Additional disinfection is requires.

Triple - Additional disinfection is not required

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34
Q

What kind of water cannot be used to fill potable water tanks? Under what circumstances could it be allowed?

A

BALLAST water. If necessary for the survival of the ship.

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35
Q

Who sets the standard for water tank coatings?

A

NSF/ANSI

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36
Q

Vents and Overflow lines, what do they do and where can they not be terminated?

A

Located to reduce accidental contamination.

Unauth:
Food service spaces
Med
Toilets
Electercal
Exterior of ship

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37
Q

Locations of manholes

A

On top of tank (1/2inch curb or coaming above deck)

On side of tanke (flush ok)

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38
Q

How must sounding tubes be labeled?

A

POTABLE WATER USE ONLY in dark blue

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39
Q

Filling lines must be:

A

Clearly labeled
color coded dark blue
18 inches from deck
turned facing downward
screw caps with keeper chains

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40
Q

What do potable water lines that distribute water to non potable tanks need to have?

A

Air gap

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41
Q

Potable water hose lockers must be:

A

18 inches off the deck

Vermin proof
Locked
Printed step by step instructions for disinfection of hoses and risers posted conspicuously inside the locker

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42
Q

Potable water hose shall be

A

Approved for potable water use
Examined routinely
SHALL NOT BE USED FOR ANY OTHER PURPOSE
Capped or coupled and stored in locker

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43
Q

Labels on hose:

A

POTABLE WATER ONLY with 1 inch high letters every 10 feet
Couplings color coded dark blue

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44
Q

labeling of Valves for receiving or supplying potable water (risers)

A

Warning plate POTABLE WATER ONLY in 1/4inch high letters
Valves or handles must be dark blue.

45
Q

Labeling of sounding tubes

A

Clearly labled with ID plate
Cap will be colored blue
(sounding tubes show how much water is in the tank)

46
Q

When receiving water from an approved source when must you check the water and what are you cheking?

A

Halogen levels are tested prior to initial transfer of water.
If not within 0.2 ppm ypu must boot to required levels.

47
Q

Who does engineering notify prior to making potable water hose connections during water tranfer?

A

MDR

48
Q

Who does the MDR make recommendations to based on the Halogen waters of the incoming water from a transfer?

A

Engineering department rep

49
Q

What must you do prior to receiving water form a doubtful source?

A

Investigate amd examine as thoroughly as possible and CO must be advised to the necessary procedures, safeguards ad disinferction.

Minimum halogen 2.0ppm

50
Q

What can an absence of Halogen indicate in the ships potable water?

A

Contamination, or id the water was improperly treated or handled

51
Q

What is bacteriological testing done for?

A

Ensure fitness for human consumption

Assess adequacy of disinfection process

52
Q

What must testing requirements conform to?

A

Standard methods for the Examination of waste and wastewater.

Published by APHA, AWWA, WPCF

53
Q

What testing requirements are naval vessels EXEMPT from?

A

Chemical quality, its too complex

54
Q

Who performs temperature/pH testing?

A

Engineering dept

55
Q

What can chlorine NOT exceed?

A

0.065 Equivalent per Million (epm) or 2.3ppm

56
Q

Can you perform Salinity testing on halogenated water? Why can you or why can you not

A

NO, it will cause false results

57
Q

TABR meaning

A

Total available bromine

58
Q

When does the MDR perform halogen testing? and what do they do it in conjunction with?

A

Daily or prior to receipt of potable water

Done in conjunction with bacterial analysis

59
Q

What is the contact time required for the engineering department to check the halogen level of potable water tanks?

A

30 min

60
Q

When do you perform microbiological quality testing?

A

Weekly according to a written plan

60
Q

Who established the maximum conaminent level?

A

EPA

61
Q

For microbiological testing how many weekly samples do you need to get?

A

Population dependant:

400 or less no less than 4 samples
400-800 requires 8 samples
More than 800 requires 12 samples

1/4 of ships ice machines and 1/4 of ships potable water tanks are also included

62
Q

how often is microbiological testing done on the emergency potable water tank

A

Monthly

63
Q

Who approves the methods of microbiological testing and what are the types we use?

A

EPA

Colilert and Colisure used by the fleet

64
Q

How many repeat samples will you need to get for a positive microbiological testing? Where will you get them from? How soon must you get them?

A

Three

-Original serivce connection sourece
- One upstream (5 service connections max)
- One downstream (5 service connections max)

Within 24 hours of positive sample.

65
Q

For Halogen testing how are chlorine and bromine residuals tested?

A

Using a DPD (diethyl-p-phenylene diamine) test

DPD #1 - Test for FAC and TABR
DPD #4 - test for chloramines (total chlorine) residule (tests for how much chlorine i put in the water in total)

66
Q

Halogen testing can be accomplished using what two tests kits and what are the ranges?

A

Color comparator (accuracy is +- 10%)

Portable spectrophotometer (accuracy +- 2%)

67
Q

How much water do you need for Halogen testing?

A

10 mL

68
Q

Who must you report continual absence of halogen residuals in potable water systems to?

A

CO and a copy to the chief Engineer

69
Q

If the color on a color comparator test kit is deeper than 5.0ppm FAC or 11.0ppm FABR what must you do?

A

Ass and additional DPD tablet and read and record.

70
Q

What is the advantage of Portable spectrophotometer?

A

Eliminates human visual subjectivity over color comparator

71
Q

What manner must collection and preperation of bacteriological testing be performed?

A

in a manner that will not contaminate the test samples.

72
Q

What do you collect first halogen or bacteriological testing?

A

Halogen, collect bacteriological after.

73
Q

How many mL of water do you need for bacteriological testing? What is already present in the bag for testing?

A

100mL of tap water and bag has sodium thiosulfate

74
Q

How long and at what temperature do you incubate bacteriological samples?

A

for 24 hours at 35C

75
Q

How do you read colilert and colisure samples?

A

With a UV light

76
Q

Colilert rections

A

Clear is NEGATIVE

Yellow is POS for total coliform

Flourescent yellow is positive for fecal coliform

77
Q

Colisure Reactions

A

Yellow is NEGATIVE

Magenta is positive for total cliform

Floutescent light blue is POSITIVE for E. Coli

78
Q

Where do you record results of bacteriological testing?

A

Potable water log and/or TMIP.
Include the positive and negative controls

79
Q

What are the approved methods of disinfecting shipboard potable water?

A

Chlorine and Bromine

80
Q

What system injects hypochlorite into system in proportion to the flow of the water?

A

Automatic chlorine disinfection

81
Q

How is bromine dispensed? (in general)

A

Brominator Via resin impregnated cartridge

82
Q

What are the two types of Brominators?

A

In-line
-Delivers 0.7ppm bromine during normal operating procedures
- Can deliver 2.0 ppmbromine when necessary
- Required for each water plant

Recirculation Bromine
- Delivers 0.7ppm bromine to water during recirculation
- Boosts bromine in potable water tanks
- Draws water form take then pushes water back into same tank

83
Q

What is the least desirable method of disinfection of water?

A

Manual chlorine disinfection (batch method)
- Usually Calcium Hypochlorite (HTH)
- Use the DOSAGE CALCULATOR in p-5010-6

84
Q

What is the clear slightly yellow liquid reffered to that comes from the manual chlorine disinfection using calcium hypochlorite? What do you do with it?

A

Supernatant

-pour it into the source for disinfection.

-DONT ALLOW calcium that settles at the bottom back into the source.

85
Q

What is the chlorine dosage rule of thumb?

A

One ounce HTH per 5000 gallons of water equals 1.0 ppm FAC

86
Q

What must you do if the ships brominator cannot achieve a TBR of 2.0ppm

A

Water must be chlorinated using the Batch method

87
Q

How long is the contact time fr checking halogen residuals fater disinfection of potable water? (approved and non approved sources)

A

Approved is 0.2 ppm FAC/TBR after 30 min

Non approved is 2.0 ppm FAC/TBR after 30min

88
Q

How many methods of disinfecting potable water SYSTEMS are there?

A

3 Methods

89
Q

What must be done after disinfecting potable water systems and after adding potable water, before use of the water?

A

Bacteriological testing

90
Q

Method 1 of sanitizing?

A
  • Fill tank
  • add chlorine 10ppm FAC
  • Hold solution for 24 hours
  • Drain tank
  • Refill with potable water
  • Bacterialogical testing
91
Q

Method 2 of sanitizing?

A
  • Spray 200ppm FAC to tank surface
  • Flush inlet/outlet with 10ppm FAC
  • Contact with chlorine must remain for minimum of 30 min
  • refill tank with potable water
  • Perform bacterialogical testing
92
Q

Method 3 of sanitizing?

A
  • Fill 5% of tank volume with 50ppm FAC
  • Hold solution for 6 hours
  • add potable water to chlorine solution to fill tank
  • Hold for 24 hours
  • Drain
  • Refill tank with potable water
  • Perform bacterialogical testing
93
Q

What are the methods of dealing with tatse/odor if source cannot be ID

A

Chlorination method
- Chlorinate 5.0ppm FAC
- Distribute at 2.0ppm FAC

Steam method
MUST BE APPROVED BY NAVSEASYSCOM
- Boil sample water for one minute
- If taste/odor is improved steam method is viable
- If taste/ordor is not improved steam treatment will not work

Requesting outside assitance
-Contact NEPMU via TYCOM Medical officer
-If problem cannot be resolved or suspected tank coatings. notify NAVSEASYSCOM via COC
-Includes Naval sea support center (NAVSEACEN) or in-service engineering Agent (ISEA)

94
Q

For storing of ready to use Calcium Hypochlorite as a READY TO USE STOCK What % is it and how do i store it. How many days worth can i have stored?

A

65-70%

Stores n cool, dry well ventilated place

*Metal box such as first aid locker with THREE 1/4inch holes drilled into the bottom of the box to release chlorine gas

No more that 7 days worth!

95
Q

For storing Calcium Hypochlorite as STORE ROOM STOCK what % and where is it stored, what are some restrictions to the condition of the store room and how much supply will be stores. Who has access? How will it be labeled?

A

In ventilated lockers or bins

Max temp will NOT exceed 100 F and not subject to condensation or water accumulation.
Must not be adjacent to magazine and five feet away from anything that reaches 140 F.

No more than 48 six ounce bottles in any individual bin/locker

Issue only to Medical and engineering officer.

All lockers or bins are labeled with “Hazardous material, Calcium Hypochlorite” on RED LETTER WITH WHITE BACKROUND

96
Q

Storing bromine Cartridges requirements

A

Lockers must have HAZARDOUS WARNING PLATE

Shelf life of two years from date of manufacture

97
Q

Where must the water sanitation bill be posted?

A

Conspicuously in areas where potable water amd associated materials are processe, treated and stored.

98
Q

Where is potable water testing recorded?

A

Potable water log

99
Q

Who maintains the potable water log?

A

MDR

100
Q

How long must you maintain records of potable water testing and where?

A

2 year chronological record of potable water surveillance in the potable water log.

101
Q

which distillation plant use electrical energy

A

Vapor Compression

102
Q

What distillation plant uses Heat derived from diesel engine jacket water?

A

Waste heat distilling plant

103
Q

What distilling plant uses steam supplied by power plant or auxiliary border?

A

Steam distilling plant

104
Q

Who approves water production methods at sea?

A

NAVSEA

105
Q

What do potable water lines which distribute potable water to non potable water tanks need to have?

A

Must have an air gap or approved and appropriate backflow prevention

106
Q

What are the proper procedures that must be followed when reviewing and transferring water via approved sources to prevent contamination

A
  • Halogen shall be tested prior to the initial transfer of water
  • potable water connections between ship and shore must be supervised by authorized personnel
  • engineering will notify MDR prior to making potable water hose connections
  • MDR will test halogen residual and make recommendation to the engineering rep
  • potable water hose shall NOT be submerged
107
Q

Who must you advise relative to the necessary procedures, safeguards and disinfection during potable water transfer from unsafe sources?

A

Commanding Officer

New class 1911 (6 decks)

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