Glossary - P

PLGS

Point Lepreau Generating Station

Source: NB Power

Pressure Tube

A CANDU reactor contains hundreds of separate zirconium alloy pressure-retaining tubes. Each pressure tube contains 12 or 13 natural uranium fuel bundles through which hot heavy water coolant passes to remove heat. Cool heavy water surrounds each pressure tube but is separated from it by a thin walled calandria tube. Heavy water fills the space between neighbouring calandria tubes.

Source: AECL

Proton

One of the basic particles which makes up an atom. The proton is found in the nucleus and has a positive electrical charge equivalent to the negative charge of an electron and a mass similar to that of a neutron.

Source: AECL

PROL

Power Reactor Operating License

Source: NB Power