TERMIUM Plus®
From: Translation Bureau
On social media
Consult the Government of Canada’s terminology data bank.
LARGE BREAK LOCA [1 record]
Record 1 - internal organization data 2026-03-18
Record 1, English
Record 1, Subject field(s)
- Nuclear Plant Safety
- Emergency Management
Record 1, Main entry term, English
- large-break loss-of-coolant accident
1, record 1, English, large%2Dbreak%20loss%2Dof%2Dcoolant%20accident
correct, noun
Record 1, Abbreviations, English
- LBLOCA 1, record 1, English, LBLOCA
correct, noun
Record 1, Synonyms, English
- large break loss-of-coolant accident 2, record 1, English, large%20break%20loss%2Dof%2Dcoolant%20accident
correct, noun
- LB-LOCA 3, record 1, English, LB%2DLOCA
correct, noun
- LBLOCA 4, record 1, English, LBLOCA
correct, noun
- LB-LOCA 3, record 1, English, LB%2DLOCA
- large break LOCA 5, record 1, English, large%20break%20LOCA
correct, noun
- LBLOCA 5, record 1, English, LBLOCA
correct, noun
- LBLOCA 5, record 1, English, LBLOCA
- large-break loss of coolant accident 6, record 1, English, large%2Dbreak%20loss%20of%20coolant%20accident
correct, noun
- LBLOCA 6, record 1, English, LBLOCA
correct, noun
- LBLOCA 6, record 1, English, LBLOCA
- large loss-of-coolant accident 1, record 1, English, large%20loss%2Dof%2Dcoolant%20accident
correct, noun
- LLOCA 1, record 1, English, LLOCA
correct, noun
- LLOCA 1, record 1, English, LLOCA
- large loss of coolant accident 7, record 1, English, large%20loss%20of%20coolant%20accident
correct, noun
- LLOCA 8, record 1, English, LLOCA
correct, noun
- LLOCA 8, record 1, English, LLOCA
- large LOCA 9, record 1, English, large%20LOCA
correct, noun
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The large-break loss of coolant accident (LBLOCA) is a design basis accident (DBA) in CANDU [Canadian deuterium uranium] reactors that is postulated to occur as a result of an instantaneous failure of a large diameter pipe in the heat transport system. Due to the positive coolant void reactivity characteristic of CANDU reactors, LBLOCA is characterized by a power excursion ... LBLOCA involves simultaneous degradation of cooling capability and fast positive reactivity insertion, due to rapid core voiding. 6, record 1, English, - large%2Dbreak%20loss%2Dof%2Dcoolant%20accident
Record 1, Key term(s)
- large-break LOCA
Record 1, French
Record 1, Domaine(s)
- Sûreté des centrales nucléaires
- Gestion des urgences
Record 1, Main entry term, French
- accident de perte majeure de réfrigérant primaire
1, record 1, French, accident%20de%20perte%20majeure%20de%20r%C3%A9frig%C3%A9rant%20primaire
correct, masculine noun
Record 1, Abbreviations, French
- APMRP 1, record 1, French, APMRP
correct, masculine noun
Record 1, Synonyms, French
- accident de perte de réfrigérant primaire dû à une grosse brèche 2, record 1, French, accident%20de%20perte%20de%20r%C3%A9frig%C3%A9rant%20primaire%20d%C3%BB%20%C3%A0%20une%20grosse%20br%C3%A8che
correct, masculine noun
- APRPGB 1, record 1, French, APRPGB
correct, masculine noun
- APRPGB 1, record 1, French, APRPGB
- APRP de type grosse brèche 3, record 1, French, APRP%20de%20type%20grosse%20br%C3%A8che
correct, masculine noun
- APRP dû à une grosse brèche 4, record 1, French, APRP%20d%C3%BB%20%C3%A0%20une%20grosse%20br%C3%A8che
correct, masculine noun
- APRP grosse brèche 5, record 1, French, APRP%20grosse%20br%C3%A8che
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
APRP de type grosse brèche. Ce type de transitoire est rapide, il dure de l'ordre de 200 s [secondes]; il conduit à une brusque chute de la pression du fluide dans le circuit primaire et à un dénoyage total du cœur. Du point de vue thermohydraulique, le scénario de cet accident peut être décomposé en trois phases, à savoir la dépressurisation et la vidange totale, le remplissage du fond de cuve et le renoyage du cœur. Dès l'ouverture de la brèche, supposée quasi instantanée, le circuit primaire se vide rapidement dans l'enceinte de confinement, ce qui entraîne l'arrêt automatique du réacteur (AAR) puis le démarrage du système RIS [système d'injection de sécurité] du fait de l'atteinte d'un seuil de très basse pression dans le pressuriseur. 3, record 1, French, - accident%20de%20perte%20majeure%20de%20r%C3%A9frig%C3%A9rant%20primaire
Record number: 1, Textual support number: 1 OBS
Les transitoires d'APRP [accident de perte de réfrigérant primaire] sont consécutifs à des brèches postulées sur la tuyauterie primaire principale de diamètre compris entre 1 et 14 pouces pour les brèches intermédiaires (BI) et supérieurs à 14 pouces pour les grosses brèches (GB). 3, record 1, French, - accident%20de%20perte%20majeure%20de%20r%C3%A9frig%C3%A9rant%20primaire
Record 1, Spanish
Record 1, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
GCtranslate (available on the Government of Canada network only)
Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.
Writing tools
The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies
Access Translation Bureau glossaries and vocabularies.
- Date Modified: