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CRNL [13 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2010-04-07

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

... the concept of deep geological disposal in stable rock formations is a fully acceptable method of disposing permanently of high-level radioactive wastes from the nuclear fuel cycle.

OBS

... the Federal Republic of Germany has chosen the policy that all radioactive waste will be placed in deep geological formations. The Asse salt mine, located in a salt diapir in Lower Saxony, has served as the national R&D facility on disposal of all types of radioactive waste.

OBS

Of the various disposal concepts which have been suggested for LLW, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches... ;containment in an engineered below-ground vault; and emplacement in a shallow mined cavity in rock.

OBS

Emplacement of wastes in abandoned mines.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
CONT

Déchets à vie longue : le stockage en formation géologique. [...] la solution retenue est l'enfouissement à grande profondeur, quelques centaines de mètres, dans des formations géologiques choisies pour leur nature et leur configuration favorables à la maîtrise des transferts.

CONT

La tâche A4 «Recherches sur le stockage géologique profond et le stockage au voisinage de la surface» ne peut être conceptuellement séparée de la réalisation et l'exploitation des installations expérimentales souterraines [...]

OBS

On réserve normalement le terme «évacuation» pour désigner le stockage définitif.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 1

Record 2 - external organization data 2001-10-30

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
  • Compartment - Canadian Nuclear Safety Commission
CONT

A number of disposal methods for nuclear fuel wastes have been suggested internationally, including ejection of the waste into outer space; transmutation of the radioactive elements; emplacement in a polar ice cap; and burial within various geological formations, both on the continents and beneath the sea floor.

CONT

Of the various disposal concepts which have been suggested for LLW, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches with minor engineered features to inhibit nuclide migration, containment in an engineered below-ground vault; and emplacement in a shallow mined cavity rock.

Key term(s)
  • disposal in land

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

Plusieurs méthodes d'évacuation des déchets de combustible nucléaire ont été suggérées à travers le monde, y compris le lancement des déchets dans l'espace, la transmutation des éléments radioactifs, le dépôt sous la calotte polaire et l'enfouissement à l'intérieur de diverses formations géologiques, soit sous terre, soit sous les fonds marins.

CONT

Des stockages par enfouissement à faible profondeur sont réalisés aux États-Unis, en Grande-Bretagne, en U.R.S.S., au Canada et en France. Dans les deux premiers pays, le stockage se fait sur des déchets pas ou peu conditionnés, dans des tranchées en pleine terre.

Key term(s)
  • élimination dans le sol

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
  • Compartimiento - Comisión Canadiense de Seguridad Nuclear
Key term(s)
  • eliminación en el suelo
Save record 2

Record 3 2001-06-29

English

Subject field(s)
  • Nuclear Waste Materials
  • Radiation Protection
CONT

A strategy and development program has been outlined by CRNL centered on waste processing for stability and volume reduction, categorization of the wastes as to their hazardous lifetime, and three grades of disposal facilities matched to the needs of durability, containment performance, and intrusion resistance.

Key term(s)
  • isolation performance

French

Domaine(s)
  • Déchets nucléaires
  • Radioprotection

Spanish

Campo(s) temático(s)
  • Desechos nucleares
  • Protección contra la radiación
Save record 3

Record 4 1996-06-05

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

Of the various disposal concepts which have been suggested for LLW, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches with minor engineered features to inhibit nuclide migration; containment in an engineered below-ground vault; and emplacement in a shallow mined cavity in rock.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 4

Record 5 1996-05-31

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

There are two shut down waste management areas at CRNL. Area A was used for trench burial of LLRW during the initial years of site operation.... Area F... contains wastes and associated soil contaminated with natural radionuclides from the AECB cleanup activities in Port Hope....

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
CONT

[Enfouissement à faible profondeur]. Ce stockage est réalisé soit sur des aires aménagées, soit dans des tranchées bétonnées.

CONT

Le stockage peut être réalisé en tranchées, mode acceptable pour des terrains argileux, si la nappe phréatique est suffisamment basse.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 5

Record 6 1996-05-10

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

Of the various disposal concepts which have been suggested for low-level wastes, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches with minor engineered features to inhibit nuclide migration; containment in an engineered below-ground vault; and emplacement in a shallow mined cavity in rock.

CONT

Mined caverns. Rock cavities can provide a high degree of containment and isolation for waste if suitable geologic conditions are present. ... Preferred characteristics of the host rock are: low frequency of open fractures to restrict groundwater flows, definable structure so that uncertainties in advance of excavation are low, and good rock competence so that adequately sized chambers can be excavated safely.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 6

Record 7 1996-04-29

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

Geological disposal .... Five ... countries have selected granite formations for the underground disposal vaults, one a volcanic tuff formation, one a salt formation, and one a clay formation. The other countries are studying disposal in granite, salt, clay, and sedimentary rock.

OBS

... the Federal Republic of Germany has chosen the policy that all radioactive waste will be placed in deep geological formations. The Asse salt mine, located in a salt diapir in Lower Saxony, has served as the national R&D facility on disposal of all types of radioactive waste.

OBS

Of the various disposal concepts which have been suggested for LLW, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches... ;containment in an engineered below-ground vault; and emplacement in a shallow mined cavity in rock.

OBS

emplacement of wastes in abandoned mines.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
CONT

[...] une attention toute particulière est portée sur les mécanismes d'altération en conditions réalistes de stockage géologique, c'est-à-dire avec mise en jeu de paramètres importants tels que la température, la pression, la nature de la roche d'accueil, celle du matériau de remplissage ou bien celle des eaux souterraines par exemple.

CONT

La vitrification est choisie pour les déchets de haute activité qui seront ultérieurement envoyés vers des stockages géologiques.

CONT

[...] déchets justiciables de l'évacuation en formation géologique terrestre.

CONT

L'enfouissement sous les fonds des océans. Il ne s'agit pas d'une immersion de déchets mais d'un stockage en formation géologique, formation de type particulier puisque subocéanique. [...] Cette méthode combine les avantages du stockage dans les formations argileuses à celui de l'immersion dans les fosses océaniques profondes [...].

OBS

Le terme anglais "disposal" (en français : "évacuation") désigne tout particulièrement le stockage permanent. Voir "disposal" et "permanent disposal" dans TERMIUM.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 7

Record 8 1996-03-31

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

A strategy and development program has been outlined by CRNL centered on waste processing for stability and volume reduction, categorization of the wastes as to their hazardous lifetime, and three grades of disposal facilities matched to the needs of durability, containment performance, and intrusion resistance.

OBS

One must distinguish between "disposal" and "storage", although they are often used interchangeably. The former normally refers to permanent storage.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
OBS

Le terme «évacuation» désigne en principe le stockage permanent. Voir cette fiche dans TERMIUM.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 8

Record 9 1996-03-18

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
DEF

The act of putting wastes into different categories according to their hazardous lifetime.

CONT

A strategy and development program has been outlined by CRNL centered on waste processing for stability and volume reduction, categorization of the wastes as to their hazardous lifetime, and three grades of disposal facilities matched to the needs of durability, containment performance, and intrusion resistance.

OBS

"categorization": the act of categorizing or the state of being categorized; classification. - "categorize, to": to put into a category or class: classify.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
OBS

Du point de vue du stockage, on distingue trois catégories de déchets appelés A, B et C. «Catégorie A» : déchets de faible et moyenne activité et ne contenant en pratique que des éléments à courte période émetteurs bêta, gamma. [...] «Catégorie B» : déchets de faible et moyenne activité contenant des éléments de période longue, généralement des émetteurs alpha [...] et pour cette raison souvent appelés déchets alpha. «Catégorie C» : déchets contenant à la fois des émetteurs bêta, gamma de haute activité et des éléments à période longue [...]

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 9

Record 10 1993-09-10

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

Of the various disposal concepts which have been suggested for LLW, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches with minor engineered features to inhibit nuclide migration; containment in an engineered below-ground vault; and emplacement in a shallow mined cavity in rock.

OBS

See also "belowground vault" and "storage vault".

Key term(s)
  • engineered below-ground waste disposal vault
  • engineered belowground waste storage vault

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires

Spanish

Save record 10

Record 11 1993-09-10

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

Of the various disposal concepts which have ben suggested for LLW, only three were compatible with the geological characteristics of the CRNL property : burial in excavated sand trenches with minor engineered features to inhibit nuclide migration; containment in an engineered below-ground vault; and emplacement in a shallow mined cavity in rock.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires

Spanish

Save record 11

Record 12 1993-09-10

English

Subject field(s)
  • Nuclear Waste Materials
  • Chemistry
  • Atomic Physics
  • Nuclear Physics
CONT

Closure of disposal units should be aimed at stability and permanence of the protection over a period at least as long as the hazardous lifetime of the waste.

CONT

A strategy and development program has been outlined by CRNL centered on waste processing for stability and volume reduction, categorization of the wastes as to their hazardous lifetime, and three grades of disposal facilities matched to the needs of durability, containment performance, and intrusion resistance.

French

Domaine(s)
  • Déchets nucléaires
  • Chimie
  • Physique atomique
  • Physique nucléaire

Spanish

Save record 12

Record 13 1993-09-10

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

Three categories of LLW were defined on the basis of hazardous lifetime to match the expected durability and level of isolation provided by each of the concepts. The categories chosen were 0 to 150 years, 150 to 500 years, and greater than 500 years. Since the large majority of the LLW managed at CRNL is expected to have a hazardous lifetime less than 500 years, it was decided to develop first the concepts fitting the shorter two categories. These were identified as the improved sand trench(IST), and the intrusion-resistant shallow land burial(SLB).

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires

Spanish

Save record 13

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