TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

HYDRO PRESSURE [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2023-01-31

English

Subject field(s)
  • Fluid Mechanics and Hydraulics (Physics)
  • Oil Drilling
  • Oil Production
DEF

The pressure on any rock at a given depth based on a hydrostatic head.

Key term(s)
  • hydro pressure

French

Domaine(s)
  • Mécanique des fluides et hydraulique (Physique)
  • Forage des puits de pétrole
  • Production pétrolière
DEF

Pression sur n'importe quelle roche à une profondeur donnée basée sur la charge hydrostatique.

Spanish

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Record 2 2016-11-23

English

Subject field(s)
  • Nuclear Fission Reactors
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...

French

Domaine(s)
  • Réacteurs nucléaires de fission
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.

Spanish

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Record 3 - external organization data 2006-08-30

English

Subject field(s)
  • Nuclear Plant Safety
  • Nuclear Fission Reactors
  • Compartment - Canadian Nuclear Safety Commission
CONT

The Hydro/AECL design team met this challenge by introducing a highly innovative containment concept-what was to become known as the negative pressure containment system. Central to the system is a large reinforced concrete building operated at a high level of vacuum(hence, the name "vacuum building"). This building is linked to the individual reactor buildings via a duct system and a number of parallel isolating valves. These valves are normally closed, permitting the reactor buildings to operate at normal atmospheric pressure. Should an accident arise, leading to a pressure rise in a reactor building, this pressure rise will actuate the isolating valves, thereby opening a flow path from the reactor building to the vacuum building. As a result, the pressure in the reactor building is quickly reduced to below atmospheric pressure, thereby positively preventing the escape to the environment of any radioactivity released inside the reactor building as a result of the accident.

French

Domaine(s)
  • Sûreté des centrales nucléaires
  • Réacteurs nucléaires de fission
  • Tiroir - Commission canadienne de sûreté nucléaire

Spanish

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Record 4 2002-10-16

English

Subject field(s)
  • Hydraulic Turbines
DEF

One of the vanes of a turbine rotor upon which the force of the steam or gas is exerted to cause rotation.

CONT

Hydro power is dependent upon the pressure exerted by a column of water, or head, directed against the rotor buckets, vanes or blades of a hydro turbine.

OBS

The original type of Pelton bucket may be seen in Fig. 76.

French

Domaine(s)
  • Turbines hydrauliques
DEF

Élément d'une turbine à action (turbine Pelton) situé à l'air libre et permettant de dévier la direction d'écoulement du fluide.

CONT

Turbine Pelton. Cette turbine du type à action, à axe soit horizontal, soit de plus en plus fréquemment vertical, est employée pour les hautes chutes (supérieures à 200 m) et les faibles débits. La roue mobile comporte un certain nombre d'augets en forme de W [oméga]. [Voir illustration page 10470].

Spanish

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Record 5 1992-07-09

English

Subject field(s)
  • Applications of Automation
  • Nuclear Science and Technology
CONT

... AECL-Ontario Hydro team designed a remotely controlled, computer-operated robot to locate and reposition the wayward spacer.... [This] Spacer Location And Replacement(SLAR) equipment opens up the fuel channels, extends a special tool down the channel, locates the spacers, measures the gap between the two tubes, and looks for blisters on the metal walls by using ultrasonic and eddy-current inspection techniques. Hydraulic jacks on the tool can bend the pressure tube to unpinch the spacers....

French

Domaine(s)
  • Automatisation et applications
  • Sciences et techniques nucléaires
CONT

Afin de localiser et repositionner les patins d'espacement qui se sont déplacés, EACL et Ontario Hydro ont formé une équipe chargée de concevoir un robot télécommandé piloté par ordinateur. Construit et éprouvé au laboratoire, l'appareil de localisation et de repositionnement des patins d'espacement (SLAR) ouvre chaque canal de combustible et y insère un outil spécial qui localise les patins, mesure l'écart entre les deux tubes et, à l'aide d'ultrasons et de courants de Foucault, détecte les soufflures dans les parois de métal. L'outil en question comporte des vérins hydrauliques permettant d'écarter les tubes pour dégager les patins (...)

Spanish

Save record 5

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