Glossary

Meter.

Meters per minute.

Square meter.

Cubic meter.

Cubic meter per hour.

Milliamps per second.

List of goods written by the vessel's commander and classified according to the waybill's number. The list records all the goods and the quantity loaded on the ship.

A device that measures pressure difference.

The pressure measured by a manometer.

The process by which the threshold of hearing one sound is raised due to the presence of another sound.

Calculations made to determine the amount of oxygen (combustion air) needed to ensure optimal combustion of fuels and wastes, or to determine the amounts of any other chemical reactants or final products.

(1) A pale yellow gum resin from the lentisk and other trees used for varnish, cement...
(2) A bituminous or oily cement, (which does not dry out), used for sealing gaps subject to changes in size.

An undiscarded substance of some determined value that may be thermally converted to make a useful product in an industrial furnace or other type of high-temperature chemical processing unit. It may be of either natural or synthetic origin (e.g., raw material, process intermediate or secondary material).

(1) The erratic movement of air caused by local obstructions such as buildings.
(2) Turbulence generated by mechanical means e.g. fans, opening doors.

Ventilation by means of one or more fans.

A unit of bulk power; 1000 kilowatts.

Detectors: Total hydrocarbon analyser, flame ionisation detector with or without gas chromatograph.
Advantages: Easily detectable, inexpensive monitoring equipment.
Disadvantages: Background concentrations, flammable, explosive.

Megahertz.

A unit of length.

A minute organism; microbes, bacteria, cocci, viruses, moulds, etc., are microorganisms.

A unit of weight in the metric system. One thousand milligrams equal one gram.

Unit used to measure air concentrations of dusts, gases, mists, and fumes.

A metric unit used to measure volume. One millilitre equals one cubic centimetre.

Minute or minimum.

The minimum quantity of fresh air, per hour, entering a room (or building) required to maintain acceptable air quality.

Million of instructions per second.

The part of an HVAC system where the return air (RA) is mixed with the outside air (OF);
The air resulting from this mixing.

A solid waste and a hazardous waste that may be assumed to become hazardous upon combination.

Millilitre.

Millimetre (length).

Millimetres per minute.

Millimetre per revolution.

Millimetres per second.

Square millimetres.

Square millimetres per minute.

Square millimetres per second.

Cubic millimetres.

Cubic millimetres per hour.

Cubic millimetres per minute.

Cubic millimetres per second.

To control a damper or valve so that it may assume any position between full open and full closed, as well as these two positions.

Of a control, tending to adjust by increments and decrements.

A mixture of clean dry air and water vapour for which the vapour pressure (density) is less than the saturated vapour pressure (density) at the same temperature.

A growth of fungi forming a furry patch, as on stale bread or cheese.

A hollow form or matrix into which molten material is poured to produce a cast.

The body of the fan which encloses the motor.

A method of visualising air flow by introducing visible particulates e.g. smokes of ammonium chloride, titanium tetrachloride, evaporated paraffin oil mixture, tobacco. also metaldehyde, soap bubbles, gas filled balloons etc.

Millisecond.

Mean time between failures.

Mean-time-to-failure.

Mean time to repair.

An HVAC system supplying air to two or more locations, each location having its own thermostat. The thermostat controls the delivered air temperature by controlling damper positions connected to a hot deck/cold deck.

Any chemical or physical agent that causes a gene change (mutation) or speeds up the rate of mutation.

Any chemical substance or physical agent that is capable of enhancing the frequency of detectable mutants within a population of organisms.

A sudden, usually rare, change in the genetic code of an organism and results in a change in function that is inheritable.

An incinerator operated for the express purpose of burning municipal wastes and usually dedicated to public use and supported by tax funds and/or user fees.

An incinerator operated for the express purpose of burning hospital and medical wastes.