TERMIUM Plus^®

Record 1,  Textual support,  English

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, record 1, English, - 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, record 1, English, - 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, record 1, English, - 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, record 1, English, - 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, record 1, English, - trench

Record 1,  Textual support,  French

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, record 1, French, - 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, record 1, French, - tranch%C3%A9e

Record number: 1, Textual support number: 1 OBS

Voir aussi «tranchée bétonnée».  2, record 1, French, - 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, record 1, French, - tranch%C3%A9e

Record number: 1, Textual support number: 1 PHR

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

Record number: 1, Textual support number: 2 PHR

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

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 OBS

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 sand or earthen materials-bulk wastes may be compacted.  2, record 2, English, - shallow%20land%20storage%20facility

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

Voir aussi «stockage à faible profondeur» et «enfouissement à faible profondeur».  3, record 2, French, - installation%20de%20stockage%20%C3%A0%20faible%20profondeur

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 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 sand or earthen materials-bulk wastes may be compacted.  1, record 3, English, - shallow%20land%20burial%20facility

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Shallow land burial trenches are typically long, narrow, excavations with an engineered floor, an engineered drainage collection and monitoring system, and an engineered cover system.  1, record 4, English, - shallow%20land%20burial%20trench

Record number: 4, 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.  1, record 4, English, - shallow%20land%20burial%20trench

Record number: 4, Textual support number: 2 CONT

Typically, each [shallow land burial] trench has a sloping floor cut into the natural soil and a French drain of gravel down one of the long sides. The trench bottom is covered with a foot or two of sand to allow water to flow freely into the French drain, especially when the trench is open during operations. Sampling pipes or tubes are placed against the trench wall, with their lower ends in the French drain, when the trench is dug. Monitoring of each disposal unit(engineered trench) is accomplished by sampling any water found in the French drain through these tubes and analyzing its contents. Sampling wells are placed around the perimeter of the facility, and elsewhere if desired, and air sampling is conducted at least until the end of the operations.  1, record 4, English, - shallow%20land%20burial%20trench

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Typically, each [shallow land burial] trench has a sloping floor cut into the natural soil and a french drain of gravel down one of the long sides. The trench bottom is covered with a foot or two of sand to allow water to flow freely into the french drain, especially when the trench is open during operations. Sampling pipes or tubes are placed against the trench wall, with their lower ends in the french drain, when the trench is dug. Monitoring of each disposal unit(engineered trench) is accomplished by sampling any water found in the french drain through these tubes and analyzing its contents. Sampling wells are placed around the perimeter of the facility, and elsewhere if desired, and air sampling is conducted at least until the end of the operations.  1, record 5, English, - sampling%20well

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish