Basic Systems Flashcards
A system is a series of … that with deliver a … from one point to another
- Components
- Substance
There are 2 types of system - … Loop and … Loop
- Open
- Closed
With an open loop system, the working fluid is …, e.g. fuel system
Consumed
With a closed loop system, the working fluid is … e.g. fresh water cooling system
Re-used
Name 3 different type of Tank?
- Header
- Service
- Drain
Header Tanks - These are used as a … to top up a tank or service system
Reservoir
Service Tanks - These are used as a reservoir for … and … … supply of fuel
Clean and water free
Drain Tanks - These are used to collect … … from a system
Oil returning
Name 4 different Tanks Gauges?
Contents Gauge
Sounding tube
Dip tape and conversion chart
Gauge glass
Strainers and used to remove … and … …from a system
Large and coarse particles
The type of material used in the systems pipe work depends on? (3parts)
- The type of service being applied
- The operating temperature
- Other types of materials used within the system
What are Phosphor bronze pipes used for?
High pressure salt water systems
What are copper pipes used for?
Domestic fresh water systems
What are copper nickel pipes used for?
Lub oil systems
What are brass pipes used for?
Castings, such as taps, valves, bodies, junctions, unions
What are plastic pipes used for?
Sewage and pre wet
What type are seal’s used depends on? (3 parts)
- System working pressure
- Fluid being used
- Temperature involved
What seals can be made from? ( 6 parts)
NAF
Paper
Leather
Cork
Copper
Rubber
Example of seal used in the Royal Navy are? (3parts)
Mechanical seals
Kneeling couplings
Gland Packing
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
Controlling the flow
Isolating
A pressure relief valve prtotects the system from … ?
Over pressurisation
What does a Non-return valve do?
Prevents flow reversal
2 examples of a non-return valve?
Flap valve
Piston valve
Definition of a reducing valve?
Valves accepts a high pressure entering it and allows the fluid or gas to expand allowing it to reduce in pressure.
Name 8 different valve types
Globe valve
Gate valve
Flap valve
Saunders valve
Ball seated cock
Pressure relief valve
Reducing valve
Non-return valve
There are 2 main groups of pumps … displacement and … displacement
Positive
Dynamic
2 methods of physically displace the fluid?
Reciprocating (up and down) e.g piston
Rotary (round and round) e.g gear
A type of positive displacement pump is a … … pump
Gear wheel
2 example of a dynamic displacement pump are … and …
Centrifugal
Axial
Electric motors convert … energy into … motion
Electrical
Mechanical
There are two main groups of pumps?
Dynamic displacement
Positive displacement
3 types of thermometers you may encounter?
Fixed brass
Standard pocket
Clock / dial face
The thermometer, either … or … …, is inserted into a recess within the plug
Standard
Fixed brass
Where possible … or … thermometers are used in pockets
Standard or cased
Thermometer pockets are to be painted with warning … and black stripes
Yellow
To aid the transfer of heat from the system, or equipment, to the thermometer the pocket is filled with a … …, usually engine oil
Transmission filter
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
Eye level
Filters are used to remove … or … … from a system
Small or fine particles
These filters include 2 types
Metallic
Absorbent
Metallic filters are made from … …and … … …or gauge screens
Wire wool
Thin steel plates
Metallic filters are used to remove … Particles of contamination from within the systems
Coarser
When the metallic filters become blocked they are removed, … and then returned to the system
Cleaned
Absorbent filters are made from …, …, … … and other similar materials
Paper
Cloth
Felt yarn
Absorbent filters remove … particles than metallic filters and are used in systems where a higher standard of cleanliness is required e.g. fuel systems
Finer
When absorbent filters and serviced they are … with a new one.
The discarded filters much be …
Replaced
Disposed of correctly
If the absorbent filter becomes blocked the pressure will … on the discharge side of the filter
Reduce
The pressure control valves … … …at a designated set level.
Maintains systems pressure
A pressure control valve will .. (monitor) … pressure and open and close as required to … the set system pressure
Sense
Outlet
Maintain
Rod gearing allows a valve to be shut manually from … (…) location
Another
Remote
A pressure relief valve is placed in a system to protect against … …
Over pressurisation
Pressure control valves … … …
At set levels
Maintain system pressures
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.
Potential
Accumulators can be used as a … / … … / …
Surge
Pulsation dampener
Absorber e
3 accumulater types include?
Piston
Bladder
Bag
