Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

HPSW > HPSW & COOLING > Flashcards

HPSW & COOLING Flashcards

1
Q

Whose permission is needed ?

A

MEO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When could the FW be cross connected to the SW

A

When fresh water pump fails

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Definition of FW and SW

A

Closed loop and open loop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Why is FW used in cooling system ?

A

Salt water can corrode and wear out materials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What happens to machinery if not cooled correctly?

A

Overheat
Become a hazard
Cause fire

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is temp white metal bearings melt at ?

A

115*c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

When would cross connection between port and starboard be used?

A

Be allowed to pump water from the opposite side , allowing maintenance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

State machinery being cooled by auxiliary cooling systems ?

A

Diesel generators

Air conditioning plants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

State Machinery being cooled by main propulsion cooling system?

A

Gas turbine cooling
Plummer block cooling
Main forces lub system
CPP if fitted

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Explain system config in DC state 3

A

One pump running
Other pumps on stand-by
All DC state valves open

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Explain system config in DC state 1

A

All pumps running
DC state 1 valves shut
HPSWM divided into zones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Explain the Pre Wet system

A

Operated in NBC environment to reduce NBC contamination levels of the upper deck

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where will HPSW sprays be located?

A

Magazines
Paint lockers
Inflam store
Funnels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How are HPSW pumps driven and where can be operated from

A

Electrically driven pump, suction from sea and discharges to ringmain which travels throughout the whole ship.

Local and Remote

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Explain the HPSW Ringmain

A

A ring of pipe work , running around 2 deck , that can be sub divided by the use of isolation valves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Explain the flow of SW from sea to Ringmain

A

Takes suction from the sea , through the strainer to remove large particles and discharges to ring main via a riser

17
Q

State six uses of HPSW

A 
Fire fighting 
Pre Wet 
Emergency cooling 
Making fresh water 
Flushing heads 
Fitted bilge
18
Q

What is fitted to prevent system over pressurisation?

A

Relief Valves

19
Q

What is the HPSW Operating Pressure?

A

7 Bar

HPSW (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions