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TRINCHERA ALMACENAMIENTO [4 records]

Record 1 2016-03-07

English

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

The storage of radioactive waste in a special facility in such a way that it remains retrievable. [Definition standardized by ISO.]

CONT

Storage is a temporary method of management using containment and isolation in a manner that incorporates provision for retrieval and that relies on the continued need for human intervention and surveillance, whether this be for monitoring, maintenance, treatment, or restriction of public access.

CONT

Evaporite deposits are ... considered as potential sites for petroleum storage and nuclear waste storage ...

OBS

The debate essentially concerns the distinction between storage and disposal. "Storage" involves the retrievability, monitoring, and ongoing institutional control of wastes. It also includes active elements of waste management in such a waste facility (e.g., leachate collection and treatment). By contrast, the concept of disposal assumes that a waste management facility can be designed in such a way that there will be no need for such measures.

OBS

waste storage: term standardized by ISO.

French

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

Stockage de déchets radioactifs dans une installation spéciale d'une façon telle qu'ils demeurent récupérables. [Définition normalisée par l'ISO.]

CONT

Les dépôts évaporitiques sont [...] considérés comme des sites potentiels d'entreposage du pétrole et des déchets nucléaires [...]

OBS

Le terme «stockage» tout court s'emploie aussi dans le sens de «site de stockage».

OBS

stockage des déchets : terme normalisé par l'ISO.

PHR

Radioactivité piégée dans un stockage.

PHR

Emmagasinement de déchets radioactifs.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
PHR

almacenamiento a largo plazo (no controlado), con posibilidad de recuperación, controlado (con posibilidad de recuperación de los desechos, temporal), definitivo, en agua, en condiciones controladas, en formaciones geológicas profundas, en formaciones rocosas estables, en pileta de agua, en tanque de agua, en trincheras, en túmulos, final, geológico, intermedio, monitoreado recuperable, permanente, prolongado (no prolongado), provisional, recuperable, refrigerado por agua, separador, subterráneo (profundo), temporal (con posibilidad de recuperación de los desechos).

PHR

bidón de, bóveda de, cajón de, caverna de(vertical), celda de, contenedor de, emplazamiento de(definitivo), instalación de(a poca profundidad, en seco, en túmulos), lugar de(viable), módulo de, pileta de(del combustible agotado), silo de, sitio de(definitivo, final, viable), tambor de, trinchera de(cercano a la superficie), zanja de almacenamiento.

Save record 1

Record 2 2012-01-17

English

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

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.

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.

CONT

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

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.

French

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

CONT

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

OBS

Voir aussi «tranchée bétonnée».

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.

PHR

Tranchée bétonnée (à faible profondeur, au voisinage de la surface).

PHR

Couverture de tranchée. Enfouissement, stockage dans des tranchées. Stockage en tranchées.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 2

Record 3 1996-06-05

English

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

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.

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.

Key term(s)
  • shallow-land burial trench
  • shallow ground disposal trench
  • near surface disposal trench

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 3

Record 4 1996-05-21

English

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

OBS

"Disposal" usually refers to permanent storage.

Key term(s)
  • open trench

French

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

On doit reserver le terme «évacuation» au stockage permanent.

Spanish

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

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