Terminologies

ABSOLUTE ALTITUDE Is the measurable height of an aircraft above the actual terrain ABSOLUTE CEILING Is the maximum altitude above sea level at which an aircraft can

Advanced Boiler Efficiency & Water Treatment – knowledge to overcome the issues that arise with regards to boiler water systems involving aspects of boiler water chemistry,

A ABRASIONThe mechanical wearing away by rock material transported by wind or water ABRASION PLATFORMA rock or clay platform which has been worn by the

MATERIALS DEG. F DIELECTRICCONSTANT ABS RESIN, LUMP   2.4-4.1 ABS RESIN, PELLET   1.5-2.5 ACENAPHTHENE 70 3 ACETAL 70 3.6 ACETAL BROMIDE   16.5 ACETAL

Absolute – This commonly  refers to a feedback device such as a resolver or an absolute encoder that provides unique position information for each discrete shaft

https://www.youtube.com/watch?v=4ORbUFquDeM ApprovedAcceptable to the authority having jurisdiction. Arcing DeviceA device, such as make/ break component, that under normal conditions produces an arc with energy sufficient

Abel tester:   A closed-cup flash tester for kerosene and other types of oil Absolute pressure:  Total pressure equal to gauge pressure plus 14.7 lbs./sq. in

Definition of some common HVAC industry terms ABSOLUTE HUMIDITY – The weight of water vapor in a given amount of air. Grains per cubic foot

A  Ablation : The processes by which ice and snow dissipate owing to melting and evaporation.  Abutment : The part of a valley or canyon wall against

Abrasion  a general wearing away of a surface by constant scratching, usually due to the presence of foreign matter such as dirt, grit, or metallic

Accuracy – The ability of a measuring instrument to indicate values closely approximating the true value of the quantity measured. Alternate Innage – See GAGING

AA – Always Afloat (In some ports the ship aground when approaching, or at berth.) AAPA – American Association of Port Authorities.  ABAFT – A

Associated gas – natural gas produced with crude oil from the same reservoir Barrel – a unit of measure for oil and petroleum products that

A Accumulation: Quantity of hydrocarbons (oil and natural gas) found in the reservoir rock in an oil or gas field. Alkylation: A chemical reaction that consists in

BCF Billion cubic feet BCFE Billion cubic feet (of gas) equivalent Bbl Barrel of oil BOE Barrel of oil equivalent   BOP/BOP Stack Blowout preventers-blowout preventer stacks – are assemblies of heavy

Antioxidant An Antioxidant is a substance that will inhibit oxidation. Antioxidants  are  usually added to fats and oil and provide more stability and longer shelf

Some Terms used in the Semiconductor Technology Acceptor Impurity An impurity added to an intrinsic semiconductor that will accept an electron from a neighboring atom

Absolute Humidity – the mass of water vapor in a unit volume of gas mixture Absolute Pressure – the pressure exerted on a vacuum Acceleration – the time

A Abnormal Failure: An artificially induced failure of a component, usually as a result of “abnormals” testing for regulatory agency safety compliance. Absolute Pressure Transducer: A transducer

Most flow signals are normally regarded as rate signals. For example the Speedometer in your vehicle  whether it is a needle or a digital device

Activated Sludge The term “activated sludge” refers to a brownish flocculent culture of organisms developed in aeration tanks under controlled conditions. It is also Sludge

Some Water and Waste Terminology   Activated Carbon Filter: Water treatment process to remove taste, odor, some organic compounds, and radon. Adsorption: retention of a

A acid – a substance that has a pH value between 0 and 7 acid deposition (“acid rain”) – water that falls to or condenses on the Earth’s

A absolute humidity: the ratio of the mass of water vapor to the volume of air in which it is present.(g/m^3) acid rain: rain that has become

Mining Terminology   Abutment – In coal mining, the weight of the rocks above a narrow roadway is transferred to the solid coal along the