Pot Whiskey Distilling:

Malted and unmalted barley are used to produce Pot Still Whiskey. Brewing is carried out through a Lauter Tun type brewing system. After brewing, fermentation takes place in dedicated vessels, called Fermenters.

Distillation is carried out through the use of copper Pot Stills. A number of Pot Still Whiskey types are produced, all involving triple distillation.
http://www.irishdistillers.ie/company/production.shtml

Termium:
Domaine(s)
  – Distilling Industries
Domaine(s)
  – Distillerie
 
pot still Source CORRECT

alambic à chauffe directe
Source CORRECT, MASC

alambic à feu direct Source MASC

DEF – A type of still in which the heat
from a flame is applied directly to the
pot containing the wash; used in the
distillation of Irish grain whiskey and
Scotch malt whiskey. Source

CONT – The simple pot still is a large
enclosed vessel, heated either by
direct firing on the botton or by steam
coils within the vessel, with a
cylindrical bulb at its top leading to a
partially cooled vapour line. Source

CONT – La distillation, proprement
dite, visant à séparer l'alcool de l'eau,
se fait soit dans des alambics à
chauffe directe (pot still), soit dans des
alambics à colonne ou circuit continu
(column still). Source