Printer-friendly version
Glossary of terms you will come across during your Phase 2 training.

Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O
P | Q | R | S | T | U | V | W | X | Y | Z | ALL



From the QME website:

QME is a world leader in supplying services to the mining industry. QME supply new and re-manufactured underground and open pit mining equipment. to the mining industry world wide. Our aim is to supply a customer service of reliability and satisfaction.

Our 15,000 ft2 rebuild facility is located on the east coast of Ireland near Navan, Co. Meath and has been in operation since 1985. Throughout this time Quarry & Mining Equipment Ltd. has built a solid reputation for top-quality standards in remanufacturing and customer support.


Contact name is John Murnin.


  • Landline: 046 9073 709
  • Mobile: 087 4191 014
  • Address: Coolfore Road, Ardbraccan, Navan, Co. Meath

Apprentices (Note: we have only begun recording apprentice names here since July 2012, cp12b, so there may be others who attended prior to that date and are not listed here)


To quench a flame means to put it out. For example, you would use a fire extinguisher to quench a fire.

In the context of combustion in an engine, quenching means that when atomised fuel enters a cold engine, the low temperatures cause the atomised fuel particles to condense on the relatively cool cylinder walls.

As we know, the only part of any fuel that burns is the vapour, so fuel that has condensed on to a cold cylinder wall does not produce vapour and will not burn.

The areas around cylinder walls are known as quenching zones, and any fuel in these zones will not burn. On the exhaust stroke, this unburnt fuel is expelled from the engine as HC (hydrocarbon).


Represented in datasheets with the abbreviation Iq, quiescent current is the current used by a device when it is ready to operate, but not yet supplying any current to a load.

You can think of quiescent current as the current required have a device ready to perform a task, but not yet performing that task.

You could also think of it as the current used by a component when it is powered up, but not yet operating.