TERMIUM Plus^®

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Nuclear Power Demonstration reactor. This was the prototype CANDU reactor, and the first power reactor in Canada. It was located upstream of AECL' s Chalk River laboratories, along the Ottawa River's south shore(i. e. in Ontario). The reactor had a maximum continuous output of 22 MWe gross(19. 5 MWe net)... The reactor was built as a joint AECL/Ontario Hydro/Canadian General Electric project, and was initially intended to use a vertically-fuelled pressure vessel reactor. The design was changed in 1957 to natural uranium fuel bundles in horizontal pressure tubes in unpressurized heavy water moderator, with on-line refuelling. These are hallmarks of the CANDU reactor. The reactor had 132 fuel channels(each fuel channel comprised a pressure tube inside a calandria tube) and the coolant leaving the channels was 7. 2 MPa and 277°C. The main reactivity control was by adjusting the heavy-water moderator level, which could be rapidly dumped for fast shut down. NPD was finally shut down on May 5 1987, for economic reasons...  4, record 2, English, - nuclear%20power%20demonstration%20reactor

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

réacteur nucléaire de démonstration : terme extrait du «Glossaire de l’énergie nucléaire» et reproduit avec l’autorisation de l’Organisation de coopération et de développement économiques.  3, record 2, French, - r%C3%A9acteur%20NPD

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A reactor in which the moderator is heavy water.  6, record 3, English, - heavy%2Dwater%20reactor

Record number: 3, Textual support number: 1 OBS

The coolant may be gas("heavy-water-moderated, gas-cooled reactor"), light water("heavy-water-moderated, boiling light-water-cooled reactor" or "steam-generating heavy-water reactor"), or heavy-water("pressurised heavy-water-moderated and cooled reactor").  6, record 3, English, - heavy%2Dwater%20reactor

Record number: 3, Textual support number: 2 OBS

heavy-water reactor: term standardized by ISO.  7, record 3, English, - heavy%2Dwater%20reactor

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Réacteur qui utilise de l'eau lourde comme modérateur.  4, record 3, French, - r%C3%A9acteur%20%C3%A0%20eau%20lourde

Record number: 3, Textual support number: 1 OBS

réacteur à eau lourde : terme normalisé par l'ISO.  2, record 3, French, - r%C3%A9acteur%20%C3%A0%20eau%20lourde

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Thermalhydraulically, the core of most CANDU reactors is divided into two halves, with the divider line running vertically down the centre of the reactor face. Each half represents a separate coolant circuit. Heavy water coolant is supplied to the pressure tubes in each circuit via large headers at each end of the calandria, one pair of headers(inlet/outlet) for each half of the core.  1, record 4, English, - heavy%2Dwater%20coolant

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish