Basic Systems

Question 1

A system is a series of … that with deliver a … from one point to another

Answer 1

1. Components
2. Substance

Question 2

There are 2 types of system - … Loop and … Loop

Answer 2

1. Open
2. Closed

Question 3

With an open loop system, the working fluid is …, e.g. fuel system

Answer 3

Consumed

Question 4

With a closed loop system, the working fluid is … e.g. fresh water cooling system

Answer 4

Re-used

Question 5

Name 3 different type of Tank?

Answer 5

1. Header
2. Service
3. Drain

Question 6

Header Tanks - These are used as a … to top up a tank or service system

Answer 6

Reservoir

Question 7

Service Tanks - These are used as a reservoir for … and … … supply of fuel

Answer 7

Clean and water free

Question 8

Drain Tanks - These are used to collect … … from a system

Answer 8

Oil returning

Question 9

Name 4 different Tanks Gauges?

Answer 9

Contents Gauge
Sounding tube
Dip tape and conversion chart
Gauge glass

Question 10

Strainers and used to remove … and … …from a system

Answer 10

Large and coarse particles

Question 11

The type of material used in the systems pipe work depends on? (3parts)

Answer 11

1. The type of service being applied
2. The operating temperature
3. Other types of materials used within the system

Question 12

What are Phosphor bronze pipes used for?

Answer 12

High pressure salt water systems

Question 13

What are copper pipes used for?

Answer 13

Domestic fresh water systems

Question 14

What are copper nickel pipes used for?

Answer 14

Lub oil systems

Question 15

What are brass pipes used for?

Answer 15

Castings, such as taps, valves, bodies, junctions, unions

Question 16

What are plastic pipes used for?

Answer 16

Sewage and pre wet

Question 17

What type are seal’s used depends on? (3 parts)

Answer 17

1. System working pressure
2. Fluid being used
3. Temperature involved

Question 18

What seals can be made from? ( 6 parts)

Answer 18

NAF
Paper
Leather
Cork
Copper
Rubber

Question 19

Example of seal used in the Royal Navy are? (3parts)

Answer 19

Mechanical seals
Kneeling couplings
Gland Packing

Question 20

Valves and cocks provide a method of … … …of a liquid, or gas, and as a means of … the various systems and components on board a ship or submarine

Answer 20

Controlling the flow
Isolating

Question 21

A pressure relief valve prtotects the system from … ?

Answer 21

Over pressurisation

Question 22

What does a Non-return valve do?

Answer 22

Prevents flow reversal

Question 23

2 examples of a non-return valve?

Answer 23

Flap valve
Piston valve

Question 24

Definition of a reducing valve?

Answer 24

Valves accepts a high pressure entering it and allows the fluid or gas to expand allowing it to reduce in pressure.

Question 25

Name 8 different valve types

Answer 25

Globe valve Gate valve Flap valve Saunders valve Ball seated cock Pressure relief valve Reducing valve Non-return valve

Question 26

There are 2 main groups of pumps … displacement and … displacement

Answer 26

Positive Dynamic

Question 27

2 methods of physically displace the fluid?

Answer 27

Reciprocating (up and down) e.g piston Rotary (round and round) e.g gear

Question 28

A type of positive displacement pump is a … … pump

Answer 28

Gear wheel

Question 29

2 example of a dynamic displacement pump are … and …

Answer 29

Centrifugal Axial

Question 30

Electric motors convert … energy into … motion

Answer 30

Electrical Mechanical

Question 31

There are two main groups of pumps?

Answer 31

Dynamic displacement Positive displacement

Question 32

3 types of thermometers you may encounter?

Answer 32

Fixed brass Standard pocket Clock / dial face

Question 33

The thermometer, either … or … …, is inserted into a recess within the plug

Answer 33

Standard Fixed brass

Question 34

Where possible … or … thermometers are used in pockets

Answer 34

Standard or cased

Question 35

Thermometer pockets are to be painted with warning … and black stripes

Answer 35

Yellow

Question 36

To aid the transfer of heat from the system, or equipment, to the thermometer the pocket is filled with a … …, usually engine oil

Answer 36

Transmission filter

Question 37

When taking a temperature reading with a thermometer located in a pocket it must be removed quickly and read immediately. The reading must be taken with the thermometer at … … to ensure an accurate reading is obtained

Answer 37

Eye level

Question 38

Filters are used to remove … or … … from a system

Answer 38

Small or fine particles

Question 39

These filters include 2 types

Answer 39

Metallic Absorbent

Question 40

Metallic filters are made from … …and … … …or gauge screens

Answer 40

Wire wool Thin steel plates

Question 41

Metallic filters are used to remove … Particles of contamination from within the systems

Answer 41

Coarser

Question 42

When the metallic filters become blocked they are removed, … and then returned to the system

Answer 42

Cleaned

Question 43

Absorbent filters are made from …, …, … … and other similar materials

Answer 43

Paper Cloth Felt yarn

Question 44

Absorbent filters remove … particles than metallic filters and are used in systems where a higher standard of cleanliness is required e.g. fuel systems

Answer 44

Finer

Question 45

When absorbent filters and serviced they are … with a new one. The discarded filters much be …

Answer 45

Replaced Disposed of correctly

Question 46

If the absorbent filter becomes blocked the pressure will … on the discharge side of the filter

Answer 46

Reduce

Question 47

The pressure control valves … … …at a designated set level.

Answer 47

Maintains systems pressure

Question 48

A pressure control valve will .. (monitor) … pressure and open and close as required to … the set system pressure

Answer 48

Sense Outlet Maintain

Question 49

Rod gearing allows a valve to be shut manually from … (…) location

Answer 49

Another Remote

Question 50

A pressure relief valve is placed in a system to protect against … …

Answer 50

Over pressurisation

Question 51

Pressure control valves … … … At set levels

Answer 51

Maintain system pressures

Question 52

An accumulator is a device in which … energy is held under pressure in the fir of compressed gas, spring or by a raised weight to be used to every a force against a fluid.

Answer 52

Potential

Question 53

Accumulators can be used as a … / … … / …

Answer 53

Surge Pulsation dampener Absorber e

Question 54

3 accumulater types include?

Answer 54

Piston Bladder Bag