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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

The simplest form of engineered trench, or shallow land burial, relies mainly on the properties of the excavated overburden and the geohydrologic properties of the site for containment. The intent is to ensure that the travel time of radionuclides from the waste to the human environment via groundwater is long compared to the nuclide half lives. Travel time is long because of low hydraulic gradients, soils of low water permeability and high contaminant adsorption, and lengthy pathways across exclusion zones.  4, fiche 1, Anglais, - trench

Record number: 1, Textual support number: 2 CONT

Illustration of a shallow land burial facility (engineered trench). ... Figure 9 outlines the engineered trench option. In this option, the major characteristics are that: . wastes are placed below grade (in suitable hydrogeological conditions) in trenches having a specially prepared bottom that incorporates a drainage system; . there is an earthen cover over the wastes that easily can incorporate additional engineered barriers; . structural stability is not provided by the disposal facility; and . for structural stability, voids between the waste containers are filled with sans or earthen materials - bulk wastes may be compacted.  5, fiche 1, Anglais, - trench

Record number: 1, Textual support number: 3 CONT

Shallow-land burial in trenches was the original low-level waste disposal practice at the beginning of the nuclear era. The method originally consisted in emplacing the wastes in trenches dug into the ground at depths ranging from 3 to 6 m and covering the emplaced wastes with about 1 m of soil.  1, fiche 1, Anglais, - trench

Record number: 1, Textual support number: 4 CONT

Burial trenches without additional engineered barriers can be used provided that radionuclides will migrate into groundwater beneath the site at an acceptable rate.  1, fiche 1, Anglais, - trench

Record number: 1, Textual support number: 1 OBS

As used in this context, the word "engineered" refers to the fact that features and materials have been designed or selected to accomplish certain functions. In shallow land burial the materials are usually natural rather than man-made.  4, fiche 1, Anglais, - trench

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 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.  4, fiche 1, Français, - tranch%C3%A9e

Record number: 1, Textual support number: 2 CONT

Stockage de surface. [...] Le stockage peut être réalisé en tranchées, mode acceptable pour des terrains argileux, si la nappe phréatique est suffisamment basse.  5, fiche 1, Français, - tranch%C3%A9e

Record number: 1, Textual support number: 1 OBS

Voir aussi «tranchée bétonnée».  2, fiche 1, Français, - tranch%C3%A9e

Record number: 1, Textual support number: 2 OBS

Dans ce contexte, l'adjectif «engineered» pourrait se rendre par «spécialement conçu». Voir l'observation qui se trouve dans le module anglais de la fiche.  2, fiche 1, Français, - tranch%C3%A9e

Record number: 1, Textual support number: 1 PHR

Tranchée bétonnée (à faible profondeur, au voisinage de la surface).  2, fiche 1, Français, - tranch%C3%A9e

Record number: 1, Textual support number: 2 PHR

Couverture de tranchée. Enfouissement, stockage dans des tranchées. Stockage en tranchées.  2, fiche 1, Français, - tranch%C3%A9e

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

An excavated earthen trench for storage of silage. They may be from 15 to 25 feet wide, 6 to 8 ft. deep and as long as desired. They are sometimes floored with concrete and lined with wood or concrete.  2, fiche 2, Anglais, - trench%20silo

Fiche 2,  Justifications,  Français

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

Temporary storage of seedlings by burial of root system in a trench.  2, fiche 3, Anglais, - heeling%20in

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Mise en jauge. Si les jeunes arbres ne peuvent être plantés au fur et à mesure de l'arrachage en pépinière, il faut les mettre en jauge, c'est-à-dire couvrir les racines de terre ou, au minimum, de paille humide, de feuilles ou de fougères.  3, fiche 3, Français, - mise%20en%20jauge

Record number: 3, Textual support number: 1 OBS

jauge : Tranchée remplie de sable et arrosée, dans laquelle on dispose des jeunes plants côte à côte pour éviter que leur système racinaire ne se dessèche en attendant la plantation définitive.  4, fiche 3, Français, - mise%20en%20jauge

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

Radioactive solid waste is monitored and segregated for consignment to various storage facilities based on radiation fields, and the type of radionuclides contained. Wastes containing significant quantities of radioactivity are stored in engineered facilities, most of which are concrete bunkers, with lined holes set into the ground being used for the water table in free draining sands. Wastes with lower radioactivity content are buried in trenches in the sand at Area c, with the trench bottom above the water table. LLRW received from offsite is similarly segregated and stored.  3, fiche 4, Anglais, - segregate%20wastes

Record number: 4, Textual support number: 2 CONT

The Prince Edward Island Department of Community and Cultural Affairs, with assistance from Environment Canada, is planning a Household Hazardous Waste Collection Day to be held June 4, 1988. ... Wastes will be segregated; recyclable materials will be recovered; low hazard materials will be landfilled or burned; and hazardous wastes not amenable to on island disposal will be sent off site via a contracted licensed disposal firm.  4, fiche 4, Anglais, - segregate%20wastes

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 CONT

Le ministère des Affaires communautaires et culturelles de l'Île-du-Prince-Édouard, avec l'aide d'Environnement Canada, organise pour le 4 juin 1988 une journée de collecte des déchets domestiques dangereux. [...] Les déchets seront triés; les matières recyclables seront récupérées, et les matières peu dangereuses, enfouies ou brûlées. Celles trop dangereuses pour être enfouies sur l'Île seront confiées à une firme d'élimination accréditée.  2, fiche 4, Français, - s%C3%A9parer%20les%20d%C3%A9chets

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 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....  1, fiche 5, Anglais, - trench%20burial

Fiche 5,  Justifications,  Français

Record number: 5, Textual support number: 1 CONT

[Enfouissement à faible profondeur]. Ce stockage est réalisé soit sur des aires aménagées, soit dans des tranchées bétonnées.  2, fiche 5, Français, - enfouissement%20dans%20des%20tranch%C3%A9es

Record number: 5, Textual support number: 2 CONT

Le stockage peut être réalisé en tranchées, mode acceptable pour des terrains argileux, si la nappe phréatique est suffisamment basse.  3, fiche 5, Français, - enfouissement%20dans%20des%20tranch%C3%A9es

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 CONT

Figure 6.1 illustrates a typical open disposal trench at the Barnwell facility. The trench floor is sloped slightly and covered with a layer of sand to facilitate collection of percolating water in a french drain. A number of pipes allow any water that may collect in the french drain to be removed and analyzed. Presently waste, primarily in boxes, drums and cask liners, is stacked neatly in the trench, starting at the high end and progressing toward the low end. High specific activity waste is usually placed at the bottom of the trench. A separate narrower shielded trench is used at Barnwell for waste that has very high dose rates at the package surface. As the level of the waste reaches the design level, 2 m below grade, a layer of dry soil is added and allowed to filter down between the waste containers. When a trench is filled, it is covered with a cap of at least 0.6 m of compacted native clay, followed by at least 0.9 m of soil.  2, fiche 6, Anglais, - open%20storage%20trench

Record number: 6, Textual support number: 1 OBS

"Disposal" usually refers to permanent storage.  1, fiche 6, Anglais, - open%20storage%20trench

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 OBS

On doit reserver le terme «évacuation» au stockage permanent.  1, fiche 6, Français, - tranch%C3%A9e%20de%20stockage%20ouverte

Fiche 6,  Justifications,  Espagnol