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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. ... Shallow land burial consists of excavating a trench, placing waste containers in the trench up to a prescribed level, but generally below the original ground surface, backfilling between the containers with sand or other free-flowing earthen material and covering the trench with earthen material.  2, record 1, English, - shallow%20land%20burial

Record number: 1, Textual support number: 2 CONT

LLW [low-level wastes] disposal to date in the USA has been almost entirely by what is commonly called shallow land burial (SLB), i.e., unlined trenches.  2, record 1, English, - shallow%20land%20burial

Record number: 1, Textual support number: 3 CONT

In France, low and medium level waste have been disposed of by shallow land burial at the La Manche disposal centre since 1969. Two types of manmade structures are used for the disposal of conditioned waste: - monoliths ...; - tumuli ....  4, record 1, English, - shallow%20land%20burial

Record number: 1, Textual support number: 1 OBS

See also "ground disposal" and "shallow disposal".  3, record 1, English, - shallow%20land%20burial

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 URSS, 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.  5, record 1, French, - enfouissement%20%C3%A0%20faible%20profondeur

Record number: 1, Textual support number: 2 CONT

Déchets de faible et moyenne activité. [...] Le mode d'évacuation retenu est l'enfouissement à faible profondeur dans des structures en béton [...]  6, record 1, French, - enfouissement%20%C3%A0%20faible%20profondeur

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, 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 2, English, - shallow%20land%20burial%20trench

Record number: 2, 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 2, English, - shallow%20land%20burial%20trench

Record number: 2, 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 2, English, - shallow%20land%20burial%20trench

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

A review of performance history at existing shallow land burial sites in the USA provides strong evidence that structurally unstable waste contributes to rapid slumping or collapse of trench covers, with subsequent water infiltration and leaching of radioactivity from the waste.  1, record 3, English, - shallow%20land%20burial%20site

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

Voir aussi «stockage à faible profondeur» et «enfouissement à faible profondeur».  1, record 3, French, - site%20de%20stockage%20par%20enfouissement%20%C3%A0%20faible%20profondeur

Record 3,  Textual support,  Spanish