Determination of the accuracy of an instrument by finding its variation from some standard measurement.

Example: Calibration of Pressure, Flow & Temperature Transmitters etc.

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A large deep ditch filled with water.

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a) Relating to a tank: Maximum volume

b) Relating to a specific equipment, a unit or to a plant: Maximum production or output

Example: a) Capacity of LOX/LIN storage Tanks.

b) Capacity of DGAN Compressor

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It refers to a control system involving two or more controllers. One instrument measures a process variable (as temperature or pressure) and resets a second process condition (as flow) through another controller.

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Any substance which affects the rate of a chemical reaction and which, in general, remains unchanged at the end of the reaction.

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System by which D.C. charge of 24 volt is induced across underground pipes to stop/slowdown corrosion.

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Sodium Hydroxide or caustic soda, mostly used to neutralize acids. Caustic has a sharp pungent odour, is a heavy musky liquid and is extremely hazardous to the skin and eyes.

Example: 50% caustic solution is used in Precooling water system

to improve the PH value.

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If a centrifugal pump suction head is low, suction is plugged, then cavitation may occur, which is the formation and collapse of vapor bubbles in the liquid. A crackling sound is produced by cavitation due to violent collapse of vapor bubbles. It causes pitting and erosion of the impeller.

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A compressor that uses centrifugal force to impart pressure and velocity to a gas is a Centrifugal Compressor. High velocity gas from the impeller passes through the diffuser, which is of larger radius where its velocity decreases and pressure increases.

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Moving a direction away from a centre or axis.

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A pump that imparts velocity to liquid by centrifugal force

and then converts some of the velocity to pressure.

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A compartment at each end of a shell and tube heat exchanger which distribute the tube side fluid to the tubes or the inlet end or collect the fluid from the tubes on the outlet end.

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A gas used to check the calibration of an analyser.

Example: Check gas for analyser calibration

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A valve with an internal flapper that will allow liquid or gas

to flow in one direction only.

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A chemical used to treat water to stop the growth of aquatic life.

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An analytical technique used to determine the individual impurities in a sample of chemical liquid or gas. Unit chromatographs are used on the process streams to detect impurities in the products, such as hydrocarbons.

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CO₂

Example: CO₂ in the process air stream is removed in TSA Adsorbers.

(a)  

A fire extinguisher using liquid carbon dioxide stored

under pressure for use as an extinguishing agent.

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The piping and equipment’s at the cold side of heat exchangers is called cold end.

(a)  

A header which has several lines draining into it.

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A distillation vessel in which liquid material are separated from one another by utilizing the boiling point difference between the materials.

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Any chemical action producing noticeable light and heat.

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A substance which may be decomposed into two or more elements by chemical change.

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A machine used to raise a gas pressure above atmospheric pressure

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To increase the amount of dissolved substance by evaporation

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The transforming of a gas to a liquid.

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Water formed by condensing steam.

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To transform from the gaseous state to the liquid state. For instance, steam is cooled and condensed to water to form condensate.

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A heat exchange that is used to condense vapors to a liquid.

(a)  

The flow of heat through a solid.

(a)  

A measurement of resistance of a substance

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An instrument device which maintains a process variable at a specific rate.

Example: LIC-1700-1 water line to EV cooler

(a)  

An instrument that indicates a variable reading and actuates a secondary device to maintain the specified rate.

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A room from which the operator and technical personnel control the process.

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A heat exchanger that is used to cool a process material down to a lower temperature.

Example: Oil coolers on the compressors.

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Wear on metal caused by nature (moisture, air, etc.) or a process material (acidic atmosphere, etc.)

(a)  

A piece of metal sheet used to measure the corrision rate of water to keeping inside the water line for certain period of time.

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A rack used to hold coupons of various metals to measure the corrosion rate of these metals in a process stream.

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The connection device between two pieces of rotating equipment’s, such as between an electric motor and a pump.

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A short pipe sleeve with internal threads used to join two sections of pipe.

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A petrol or diesel lifting device with a long boom and capacity for lifting heavy equipments

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The RPM at which a rotating piece of equipment shakes or vibrates as it passes through different speed ranges, usually occurs during start up

(a)  

Extremely cold gases and liquids which are at a temperature of –150°C or colder. Oxygen, Nitrogen, Argon, Helium, Hydrogen, and Methane are some of the most common cryogenic gases.

(a)  

CWR

(a)  

CWS

(a)  

An alternation or switching of something such as equipment or machinery.

Example: Regeneration cycle for TSA every 3~4 hrs

(a)