Instrument Air system

Name

Instrument Air is ___ air used to supply to instrumentations.

• clean, dry and oiled

• clean, dry and oil-free

• clean, wet and oiled

• clean, wet and oil-free

The purpose of this instrument air system is to provide clean, dry air to all instruments in the plant such as air operated valves, transmitters and Pressure Swing Adsorption unit of a Nitrogen plant.

• True

• False

Typically, the clean and dry instrument air is supplied to:

- ?

- All air service points

- Pressure swing adsorption unit (PSA) of a Nitrogen system plant

• Instrumentation of Utility Complex

• Instrumentation of Process Complex

• Instrumentation of Utility and Process Complex

• None of the above

Which of the following components are part of the instrument air system?

• Pump, Cooler, Receiver separator, Drier, Filter, Distribution header

• Air compressor, Heater, Receiver separator, Drier, Filter, Distribution header

• Air compressor, Cooler, Receiver separator, Drier, Strainer, Distribution header

• Air compressor, Cooler, Receiver separator, Drier, Filter, Distribution header

Instrument air is produced by compressing air from the atmosphere using a ___ which is driven by a reciprocating engine, electric motor or turbine.

• Pump

• Compressor

• Filter

• Suction unit

Compressing a gas heats it up. Compressed instrument air is passed through a ___ to condense any water vapour back to liquid and then into a vessel called a receiver separator where any liquid contaminants such as water, oil or emulsions can be separated and drained off. Water vapour is then further removed from a side stream directed through the instrument air driers.

• Cooler

• Heater

• Receiver separator

• Drier

Compressing a gas heats it up. Compressed instrument air is passed through a cooler to condense any water vapour back to liquid and then into a vessel called a ___ where any liquid contaminants such as water, oil or emulsions can be separated and drained off. Water vapour is then further removed from a side stream directed through the instrument air driers.

• Cooler

• Heater

• Receiver separator

• Drier

Compressing a gas heats it up. Compressed instrument air is passed through a cooler to condense any water vapour back to liquid and then into a vessel called a receiver separator where any liquid contaminants such as water, oil or emulsions can be separated and drained off. Water vapour is then further removed from a side stream directed through the instrument air ___.

• Cooler

• Heater

• Receiver separator

• Drier

Solid contaminants such as dirt, rust and scale particles are removed by ___ installed in the line from the driers to the air supply manifold (distribution header) where the air is directed to users by pipelines.

• Filter

• Strainer

• Drier

• Cooler