Ballast System

Question 1

How many tanks do we have

Answer 1

20

Question 2

How many flood valves do we have

Answer 2

20

Question 3

How many interconnect valves do we have

Answer 3

18 (10 pneumatic and 8 manual)

Question 4

How many deballast pumps do we have

Answer 4

10

Question 5

How many discharge valves do we have

Answer 5

10

Question 6

What cause the dock to sink

Answer 6

The weight of the water

Question 7

What removes the water from the dock

Answer 7

Pumps

Question 8

Tanks that share a bulk head can’t have no more than what difference between tanks

Answer 8

10 feet

Question 9

What is the max differential between the tank level and the outside draft

Answer 9

23 feet

Question 10

All pumps are powered from what

Answer 10

1E switch board

Question 11

When on EDG power how many pumps can be run at a time

Answer 11

6 pumps

Question 12

Which pumps move 5,626 gallons of water per minute

Answer 12

Pumps 3-8

Question 13

Which pumps move 4,900 gallons of water per minute

Answer 13

1,2,9,10

Question 14

What happens if the arco loses power or air pressure

Answer 14

We go into air lock which means we are unable to open or shut ballast system valves

Question 15

In air lock what shuts and what opens

Answer 15

Flood valves-Shut
Interconnect valves-Shut
Discharge valves-Open

Question 16

As a back up what do each pneumatic valve have

Answer 16

They have a flask that has enough air for 5 full valve movements

Question 17

How are tank levels taken

Answer 17

With TLIs or by manually sounding the tank with a sounding tape

Question 18

How do TLIs take readings

Answer 18

It takes a laser reading of tank depth and reports it to ballast control