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NPC SYSTEM [1 record]
Record 1 - external organization data 2006-08-30
Record 1, English
Record 1, Subject field(s)
- Nuclear Plant Safety
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 1, Main entry term, English
- negative pressure containment system 1, record 1, English, negative%20pressure%20containment%20system
Record 1, Abbreviations, English
Record 1, Synonyms, English
- NPC system 1, record 1, English, NPC%20system
Record 1, Textual support, English
Record number: 1, Textual support number: 1 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. 1, record 1, English, - negative%20pressure%20containment%20system
Record 1, French
Record 1, Domaine(s)
- Sûreté des centrales nucléaires
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 1, Main entry term, French
- système de confinement à pression négative
1, record 1, French, syst%C3%A8me%20de%20confinement%20%C3%A0%20pression%20n%C3%A9gative
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- système de CPN 1, record 1, French, syst%C3%A8me%20de%20CPN
masculine noun
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
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