3E451 Vol 8

Front 1

Which color band designates ROWPU piping that carries raw water

Back 1

Black

Front 2

Which color band designates ROWPU piping that carries filtered water

Back 2

Yellow

Front 3

Which color band designates ROWPU piping that carries product water

Back 3

Blue

Front 4

How many gph does the 1500 ROWPU produce on average

Back 4

1500

Front 5

How many hours per day is the ROWPU designed to operate

Back 5

20

Front 6

What is attached to the suction hose connected to the raw water pump that prevents the intake of damaging objects

Back 6

Strainer

Front 7

What is an electrically driven centrifugal pump used to pump water from the product water tanks to the end use

Back 7

Distribution pump

Front 8

What is another term used to refer to the backwash water tank?

Back 8

Brine tank

Front 9

How many gallons of water does the backwash water tank hold?

Back 9

20000

Front 10

How many RO elements are in each ROWPU RO vessel?

Back 10

2

Front 11

What is the first stage of purification in the ROWPU process

Back 11

Multimedia filtration

Front 12

What is the fourth and final stage of treatment that completes the ROWPU water treatment process?

Back 12

Chemical disinfection

Front 13

Sodium hex is fed by the ROWPU chemical feed pump at the

Back 13

Multimedia filter influent

Front 14

What chemical is fed to reduce scale and corrosion in side the pipe network of the ROWPU

Back 14

Sodium Hex

Front 15

How many drain valves are installed on the ROWPU

Back 15

7

Front 16

What is the maximum allowable TDS level on the ROWPU

Back 16

1000 ppm

Front 17

What process lasts for 4 minutes and completes the backwash cycle

Back 17

Rinsing

Front 18

What must you do first before you set up and operate the ROWPU

Back 18

Select the proper site

Front 19

How many feet upstream and away from the campsite should the ROWPU intake point be located

Back 19

100

Front 20

How many people are required for unpacking the ROWPU

Back 20

2

Front 21

How many identical raw water pumps are included with the 1500 ROWPU

Back 21

2

Front 22

What is used to measure TDS and temperature

Back 22

Ultrameter

Front 23

Once operational what water source is used to mix the chemical used in the ROWPU

Back 23

Raw

Front 24

What type of water may never be used to mix chemicals

Back 24

Chlorinated

Front 25

For the unit to be grounded properly how many feet of the grounding rod must be in the ground

Back 25

8

Front 26

What is the target flow for brackish water

Back 26

30 gpm

Front 27

When forcing water to go to the RO vessels using the RO pump what is the target flow for seawater

Back 27

25 gpm

Front 28

The normal raw water flow reading should be between

Back 28

45-52 gpm

Front 29

The normal reading of RO pressure for saltwater is

Back 29

960 psi

Front 30

The normal reading of RO pressure for freshwater is

Back 30

500 psi

Front 31

The normal reading of RO pressure for brackish water is

Back 31

500 pai

Front 32

You are unable to backwash the multimedia filter without which type of water?

Back 32

Brine

Front 33

In all cases it should never be necessary to increase the polymer feed rate above what?

Back 33

5

Front 34

The RO pump pressure should never exceed

Back 34

980 psi (seawater) and 550 psi (fresh/brackish water)

Front 35

As a rule of thumb the multimedia filter should be backwashes when how many hours of continuous operations have elapsed?

Back 35

20

Front 36

As a rule of thumb the multimedia filter should be backwashes when the multimedia filter gauge reads

Back 36

5 psi above initial start upnreading

Front 37

When performing long term shutdown what needs to be backwashes?

Back 37

Multimedia filter

Front 38

In which capacity is citric acid feeding used during production run of the RO vessels

Back 38

Maintenance close

Front 39

Citric Acid is fed when product water pH rises above

Back 39

8 and/or 20 hours of production time has elapsed

Front 40

What needs to happen if the product water TDS is over 1000 psid?

Back 40

Clean the RO vessels

Front 41

During cleaning operation water temperature should never read above

Back 41

110 F

Front 42

Replace the RO elements after they have been cleaned and if the TDS readings do not drop below

Back 42

1000 ppm

Front 43

When must you replace bag filter?

Back 43

When then differential pressure exceeds 20 psid

Front 44

What must you accomplish first before you replace the bag filter ?

Back 44

Complete a normal shutdown and turn off the main power

Front 45

You discard the bag filter after this many washes?

Back 45

6

Front 46

When do you replace the RO elements

Back 46

When it’s no longer possible to keep the TDS of product water below 1000 ppm

Front 47

With no new water production how long is the BEAR water storage capacity designed to sustain a 1100 person camp and how many gallons are allotted for each person per day ?

Back 47

5 days and 30 gal

Front 48

What color stripe identifies hoses that are intended for use with the potable water subsystem if the BEAR water distribution system?

Back 48

White

Front 49

What is the best way to protect hard wall piping from solar radiation?

Back 49

Bury piping

Front 50

Under normal conditions what are the proper ppm and hours needed for chlorine to disinfect the BEAR water distribution system?

Back 50

10, 24

Front 51

The chlorine residual of a BEAR water distribution system should never be lower than

Back 51

1 ppm at the point of use

Front 52

How many feet can the source run subsystem pump water and how many feet can it pump to a water storage tank?

Back 52

6000 and 150

Front 53

What BEAR water distribution subsystem is the primary potable water distribution system

Back 53

550 initial subsystem

Front 54

What pressure range does the dual pump station maintain the BEAR water distribution system to?

Back 54

40-50 psi

Front 55

The 550 follow on subsystem when used as an expansion is functionally identical to what other water distribution subsystem?

Back 55

550 initial subsystem

Front 56

What components make up the BEAR package macerator pump lift stations

Back 56

Submersible macerator pump, pump lift out assembly, and three floats

Front 57

If the pressure switch on the 35 gpm electric pump is not operating properly what is the first step you should take to correct the problem after de energizing the unit

Back 57

Clean the contacts

Front 58

What could cause extensive damage to the centrifugal pump on the 499 gpm diesel pump

Back 58

No water flow to pump

Front 59

When a float is not working properly in the dual pump lift station, and you have cleaned it and observed that it submit getting hung up in the lift station itself what is your next course of action?

Back 59

Have an electrician check the float

Front 60

What is the first things you should do before pulling a pump out of one of the BEAR lift station

Back 60

Turn the power off to the pump

Front 61

How many washer and dryers are provided with the self help laundry?

Back 61

Five washers and five double stacked dryers

Front 62

For planning purposes how much waste water should you expect to be generated from the field laundry?

Back 62

2 gpppd

Front 63

What TO action do you follow to correct the self help laundry’s water heater if the water is too hot

Back 63

Test and service the mixing valve

Front 64

How many evaporation beds are used in a field kitchen waste disposal system?

Back 64

7

Front 65

What effect does grease have on the electric kitchens evaporation beds?

Back 65

Slows the evaporationnprocess

Front 66

How many inches of sand is required when a 20000 gallon water bladder is placed on rocky or uneven surfaces

Back 66

2

Front 67

What is the maximum allowable height you can fill a 20000 gallon water bladder?

Back 67

64”

Front 68

Each BEAR deplorable latrine unit consists of

Back 68

6 toilets and 1 urinal trough that drain into a 369 gallon waste tank

Front 69

How many males and female does one girl deplorable latrine service?

Back 69

70 males and 52 females

Front 70

How much water is required to prime the pump on the BEAR latrines deployable pump?

Back 70

3 quarts

Front 71

How many people can use the shower at any one time?

Back 71

12

Front 72

The temperature of delivered water is primarily controlled in the shower/shave facility by the

Back 72

Temperature regulator mixing in more or less cold supply water when demand is increased or decreased

Front 73

What action during operation will prevent the boiler from emitting heavy smoke from the exhaust stack

Back 73

Opening the air band

Front 74

What is the highest allowed temperature of “mixed” water from the shower/shave pump assembly’s temperature regulator?

Back 74

115 F

Front 75

What is the diameter in inches of the drainage hoses for the shave stands?

Back 75

1 1/2

Front 76

What are the four most common problems that will likely occur to the shower/shave unit?

Back 76

No water, no drainage, no power, incorrect temperature

Front 77

How many sinks and showers does the Expandable Bicon Shelter (EBS) contain?

Back 77

12 each

Front 78

Approximately how big of area do you need to set up the EBS system?

Back 78

90’ x 60’

Front 79

Which bare base medical facility provides outpatient clinic services?

Back 79

Air transportable clinic

Front 80

Which medical facility is housed in a combination tent expendable modular personnel (TEMPER) and Alaskan tents?

Back 80

Air Force theater hospital

Front 81

Which To should you consult before operating the sewer sucker trailer (SST)?

Back 81

36A11-18-24-1

Front 82

How do you eliminate the possibility of cross contamination with the water distribution truck?

Back 82

Clearly mark the trucks potable or non potable

Front 83

The supplemental packages for the rapid utility repair kit (RURK) I contain the components to repair what size pipes?

Back 83

10” and 12” pipe

Front 84

When performing a valve put repair in conjunction with an in crater repair, where should the valve manifold be located?

Back 84

Outside the crater and upwind

Front 85

During night repair operations with the RURK I how close to a craters edge can flood light stands be positioned?

Back 85

No closer than the height of the floodlight

Front 86

What size towing capacity must the tow vehicle have to be used for the RURK I

Back 86

Two and a half ton

Front 87

Which expedient latrine is used if a prolonged deployment is planned?

Back 87

Deep pit

Front 88

How often should you spray a deep pit latrine for fly control

Back 88

Twice a week

Front 89

The number of saddle trenches that you have to build in the fuel is determined by

Back 89

Size of the unit

Front 90

You should close a saddle trench expedient latrine when

Back 90

It becomes filled to within 1 foot of the surface

Front 91

Which expedient latrine is best for disposing human wastes in the field

Back 91

Ventilated improves pit

Front 92

The proper dimensions of the mound latrine are at least

Back 92

6’ wide and 12’ long

Front 93

To prevent the growth of rooted aquatic plants, how many feet is the minimum depth of an oxidation pond?

Back 93

2

Front 94

What type of pond or lagoon should be used only as a last resort when disposing I’d wastewater?

Back 94

Evaporation

Front 95

What reduced the agitation of the scum layer in the septic tank

Back 95

Baffle boards

Front 96

What is used in a leach fuel to prevent fine soil particles from migrating into the gravel

Back 96

Paper or straw

Front 97

You should design a lift station to have sufficient capacity so grease already in the trap is

Back 97

Not heated by incoming hot grease

Front 98

When you expand water facilities the capacity of any small dams and reservoirs you build should be capable of impounding at least the total

Back 98

Daily flow

Front 99

How many feet is the diameter of a dug well?

Back 99

3 to 20

Front 100

In a duh well, the water flows into the casing from the

Back 100

Bottom