6.15

Question 1

What chapter of the NAVMED P-5010 is about field water?

Answer 1

Chapter 10

Question 2

Unit Commander:

Answer 2

1. Ensures sufficient quantities of safe water for drinking, cooking, and bathing.
2. Enforce water discipline
3. Inform troops about the dangers of consuming untreated water
4. Know the proper methods of disinfection of personal drinking water

Question 3

Engineering Officer

Answer 3

1. Provides sufficient potable water quantities for the population.
2. Construction, operation, and maintenance of all facilities used for collection, treatment, and distribution of potable water.
3. Selecting sources of raw water

Question 4

Medical Department

Answer 4

1. Advises the Commanding Officer on water quality issues.
2. Assists the engineers with the following:
   a) Selection of water sources.
   b) Surveying the potable water system.
3. Conduct routine bacteriological examination of the potable water supplies.
4. Test water for halogen levels.
5. Inform engineers of water quality and type of treatment required.
6. Chemical analysis of field water supplies made on a case by case basis assigned by medical and engineering personnel.

Question 5

All water sources in the field should be considered unsafe until they have been evaluated and approved by who?

Answer 5

Medical department.

Question 6

Influences on water choice:

Answer 6

1. Quality
2. Quantity
3. Accessibility

Question 7

Potential water sources:

Answer 7

1. Public water supply
2. Surface water
3. Ground water
4. Commercial bottled water

Question 8

Which is the easiest and safest source?

Answer 8

Public water supply

Question 9

What are some examples of surface water?

Answer 9

rivers, streams, lakes, ponds, seas, oceans

Question 10

What are some examples of ground water?

where are they usually located?

Answer 10

Existing wells and springs

30 yards from known contamination

Question 11

Which is usually less contaminated than surface water?

Answer 11

Ground water

Question 12

Commercial bottled water must be tested to be determined as

Answer 12

potable water

Question 13

Typical field water treatment process include:

Answer 13

1. Straining
2. Chemical addition
3. Coagulation
4. Sedimentation
5. Various kinds of filtration

Question 14

What does ROWPU stand for?

Answer 14

Reverse Osmosis Water Purification Unit

Question 15

Can be used to produce potable water from:

Answer 15

1. Fresh water
2. Sea water
3. Brackish water

Question 16

Marine Corps Lightweight Medium Tactical (LMT)

Answer 16

Produces 3,000 gallons per hour

Only used in treating fresh water

Question 17

Lightweight water purifier (LWP)

Answer 17

125 gallons per hour

more mobile

Question 18

International Organization for Standardization (ISO)

Answer 18

Produces 1500 gallons of water per hour

replacing RO

Question 19

Which is the most common method of disinfection of field water?

Answer 19

Chlorination

Question 20

Chlorine is added to the water to achieve the desired free available chlorine (FAC) after how long?

Answer 20

30 min

Question 21

Different types of disinfectants

Answer 21

1. Calcium Hypochlorite (HTH) 65% to 70% most common
2. Sodium Hypochlorite 5% or 10% unscented bleach
3. Chlorine dioxide
4. Chlorine gas
5. Bromine
6. Chloramines ozone
7. UV radiation

Question 22

Required chlorine residuals point of production and initial distribution

Answer 22

2ppm FAC after 30 minute

Question 23

Required chlorine residuals delivery to secondary storage and unit level storage

Answer 23

1ppm FAC

Question 24

If between 0.2ppm and 1ppm FAC

Answer 24

re-chlorinate to 1ppm and deliver

Question 25

If less than 0.2ppm FAC

Answer 25

re-chlorinate to 2ppm and ensure that at least 1ppm FAC remains after 30 minutes.

Question 26

Required chlorine residuals filling canteens, personal hydration system

Answer 26

0.2ppm FAC

Question 27

Ground water approved for drinking

Answer 27

2ppm FAC after 30 minutes

Question 28

Disinfecting natural surface water

Answer 28

5ppm FAC after 30 minute EMERGENCY ONLY

Question 29

Water purification tablets (Iodine tablets)

Answer 29

1. For disinfecting water in small containers such as canteens 2. Usually composed of Iodine 3. Steel-gray

Question 30

Discard if Iodine tablets

Answer 30

1. Color turned yellow or brown. 2. Stick together or crumble easily.

Question 31

How many iodine tabs for 5 gallon water jugs?

Answer 31

40 iodine tablets

Question 32

How many iodine tablets for Personal Hydration System: 70 or 72 ounces? 100 or 102 ounces?

Answer 32

4 tabs 6 tabs

Question 33

what are the 11 types of containers used for storing potable water in the field

Answer 33

1. PWS/DS 2. 3k gallon 3. LHS “hippo” 4. FAWPSS 5. SMFT 6. TWDS 7. WDWMS 8. 400 gallon water trailer 9. 5 gallon jug 10. canteen/PHS 11. 800 gallon “camel”

Question 34

Primary means for the receipt and storage of bulk drinking water and for issue to combat forces under tactical conditions.

Answer 34

Potable water storage and distribution systems (PWS/DS)

Question 35

How many gallons does the LHS hold?

Answer 35

2,000 gallons

Question 36

Forward Area Water Point Supply System (FAWPSS)

Answer 36

1. Portable, self contained 2. Gas or diesel operated unit 3. Employs centrifugal pump to distribute water

Question 37

How many gallons does the Semitrailer-Mounted Fabric Tank (SMFT) hold?

Answer 37

3k or 5k gallons

Question 38

Tactical Water Distribution system (TWDS)

Answer 38

1. Highly mobile 2. Distribute water up to 10 miles

Question 39

Which is the primary means for DEPMEDS hospital under tactical conditions?

Answer 39

Water distribution and waste management system (WDWMS)

Question 40

What are the 3 Disinfection procedures for PWT?

Answer 40

1. Method 1 2. Method 2 3. Alternative procedure

Question 41

What are the Disinfection Procedures:

Answer 41

1. Drain 2. Scrub 3. Rinse 4. Drain detergent 5. Rinse repeatedly 6. Super-chlorinate

Question 42

Disinfecting Method 1

Answer 42

10ppm FAC for at least 60 min

Question 43

Disinfecting Method 2

Answer 43

5 gallons of water with 100ppm FAC swab every 10 min for 1 hour