BALLAST CONTROL & CHT

Question 1

How are the sea valves for the 5th and 6th deck tanks opened?

Answer 1

Hydraulic pressure from the HPU’s

Question 2

Where are the HPU’s located?

Answer 2

Reefer decks; main 1 escape or above #6 A/C

Under post office

Repair 3’s p-way

STBD stern gate operating room

Question 3

How many eddy pumps do we have?

Answer 3

2 (main CHT)

Question 4

How many macerator pumps do we have onboard?

Answer 4

8

Question 5

Why do we ballast?

Answer 5

Heavy seas
Amphib OPs
Low bridges
When we run aground
List correction
Counter battle damage

Question 6

How many CHT tanks do we have?

Answer 6

7
Main CHT
Port & STBD ejection
Main 1 & 2, Aux 1 & 2

Question 7

How are the 5th & 6th deck tanks filled and drained?

Answer 7

Filled by gravity

Drained by DBAC

Question 8

Where is ballast control located?

Answer 8

By STBD side quarterdeck

Question 9

What gas are we most concerned with dealing with CHT?

Answer 9

H2’s

Question 10

When do we use the 3 modes for CHT?

Answer 10

Inport - while pier side

Transit - within 3 NM

At sea - outside of 3 NM

Question 11

How many ballast tanks do we have in total?

Answer 11

87

Question 12

Why do we de-ballast?

Answer 12

Shallow water
Amphib OPs
Better fuel consumption

Question 13

How many 5th & 6th deck tanks do we have?

Answer 13

69

Question 14

How many modes does CHT have?

Answer 14

3

Question 15

What does IDLH stand for?

Answer 15

Imminent Danger to Life & Health

Question 16

How many 3rd deck pre-ballast tanks do we have?

Answer 16

18

Question 17

What is grey water?

Answer 17

Sink
Shower
Deck drains

Question 18

How many HPU’s do we have?

Answer 18

5

Question 19

What are the 3 modes of CHT?

Answer 19

Inport
Transit
At Sea

Question 20

How deep do we need to be at the sill to take in a LCU?

Answer 20

8 feet

Question 21

What does the red & yellow lights indicate on the H2’s sensors?

Answer 21

Yellow - 8PPM H2’s

Red - 20PPM H2’s

Question 22

How many gallons does each tank hold?

Answer 22

Main - 13,770 gallons

Port & STBD - 650 gallons

Main space tanks - 15 gallons

Question 23

What is ballasting?

Answer 23

The controlled sinking of the ship

Question 24

What is de-ballasting?

Answer 24

The controlled raising of the ships draft

Question 25

What is black water?

Answer 25

Anything from the urinal or toilet

Question 26

How deep do we need to be at the sill to take on an LCAC?

Answer 26

0-6 inches

Question 27

What are the macerator pumps rated at and what do they do?

Answer 27

40 - 60 gallons per minute Chop up debris into 1/4 inch pieces

Question 28

What is some of the gear we use for a CHT clean up?

Answer 28

``` Tyvek suit - Poopy suit firefighting boots Gloves Face shield SCBA ```

Question 29

What are the eddy pumps rated at?

Answer 29

300 gallons per minute

Question 30

How deep do we need to be at the sill in order to recover an AAV?

Answer 30

4-6 feet

Question 31

How deep do we need to be at the sill in order to launch an AAV?

Answer 31

1 foot

Question 32

Sewage receiving station number 1

Answer 32

(6-73-3-E) Sewage receiving tank #1 - 281 gallons Macerator pump #3 Sump pump #2

Question 33

Sewage receiving station number 2

Answer 33

(3-113-6-E) Sewage receiving tank #2 - 295 gallons Macerator pumps #1 & 2 Sump pump #1

Question 34

Sewage pump room number 1

Answer 34

(6-39-0-E) Sewage tank #1 - 26,162 gallons Discharge pumps #1 & 2 - 150gpm @ 39PSI Aspirator pumps #1 & 2 - 240gpm @ 13PSI Comminutor - 8 in 1d

Question 35

List & trim

Answer 35

List - degree from port - STBD Trim - Fwd to Aft *5 degrees is abnormal both read from clinometer

Question 36

Draft

Answer 36

How deep the ship sits in the water

Question 37

Levels of H2’s

Answer 37

Yellow - 10 PPM’s Red - 50 PPM’s At 1000 - considered IDLH & be absorbed through the skin

Question 38

Sewage clean up

Answer 38

Detergent PPE; - disposable gloves - goggles - face shield - rubber boots - laundry bag - impermeable rubber gloves

Question 39

4 DBACs onboard

Answer 39

1 & 2 - Fwd A/C 3 & 4 - Aft DBAC 8-12 PSI to blow tank

Question 40

The bullet

Answer 40

Service tank to HPU Located horseshoe P-way STBD side

Question 41

HPUs operate

Answer 41

FM fill Sea Valve Gravity drain valves

Question 42

Sewage pump room number 2

Answer 42

(5.5-76-1-E) Sewage tank #2 - 27,496 gallons Discharge pumps #3 & 4 - 150gpm @ 39 PSI Aspirator pumps #3 & 4 - 240gpm @ 13 PSI Comminutor - 8 in 1d