HPSWM

Question 1

HPSWS

Answer 1

High Pressure Salt Water System

Question 2

HPSWM supplies all areas throughout the ship with a pressure of:

Answer 2

7 Bar / 100-120PSI

Question 3

HPSWS is maintained by….

Answer 3

An electrically driven pump

Question 4

Uses for HPSW (7)

Answer 4

1. Firefighting
2. Pre-Wetting
3. Fitted Bilge and Salvage Educators
4. Emergency Cooling to Main Propulsion
5. Auxilliary Cooling Water System
6. Making Fresh Water
7. Flushing Heads

Question 5

What is a ringmain?

Answer 5

A ring of Pipework running around 2 deck that can be subdivided by the use of isolation valves

Question 6

At any time, a minimum of __ Salt water pump is running

Answer 6

1

Question 7

How many pumps can supply the whole ship with salt water?

Answer 7

1

Question 8

What do the other pumps do while one pump is supplying the ship?

Answer 8

They are maintained in a stand by state

Question 9

What operation requires more pumps to be running?

Answer 9

Flight Deck Operations

Question 10

What are the two positions Pumps can be operated from?

Answer 10

Local, and Remote

Question 11

Where is Local pump operations used?

Answer 11

Close to the pump, so that anyone in the vicinity has control over the pump

Question 12

Where is remote operations used?

Answer 12

Allows pump to be controlled from a remote position from the pump (System Control Centre)

Question 13

What is a fixed spray system?

Answer 13

An automatic, or manually operated firefighting system

Question 14

What are the four fixed spray operations?

Answer 14

Magazines, Paint Lockers, Inflam Stores, Funnel

Question 15

What is Pre Wet?

Answer 15

It washed upper decks to clear them of NBC contaminants

Question 16

Name the 3 Pre Wet contaminants

Answer 16

1. Nuclear
2. Chemical
3. Biological

Question 17

What pressure is HPSWM operated at?

Answer 17

7 Bar, 100-120PSI

Question 18

DC State 1 is used when…

Answer 18

There is possibility of damage

Question 19

Name the 3 parts of DC State 1

Answer 19

1. All Pumps Running
2. Valves Shut
3. Divided into Zones

Question 20

When is DC State 3 used?

Answer 20

Normal Operations

Question 21

Name the 3 parts of DC State 3

Answer 21

1. One Pump Running
2. Other pumps on standby in case of pressure drops
3. All valves open

Question 22

Draw and name the Leak Off Diagram

Answer 22

Draw and name the Leak off Diagram

Question 23

What does leak off do?

Answer 23

Leaks 10% , to prevent Over pressurisation

Question 24

Each pump takes _______ from the sea through _________ to discharge through the ________, and delivers saltwater to ________ via ______

Answer 24

Suction
Strainers
Ringmain
Ringmain
Risers