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FP5

Nuclear science and technology, Full-Scale Engineered Barriers Experiment for a Deep Geological Repository for High-Level Waste in Crystalline Host Rock - Phase II, FEBEX II

Project ID: FIKW-CT-2000-00016
Funded under: FP5-EAECTP C

Abstract

FEBEX ("Full-Scale Engineering Barrier Experiment in Crystalline Host Rock") is an international research project led by ENRESA, with financial support from the European Commission. FEBEX consists of an "in situ" full-scale test performed under natural conditions; a "mock-up" test, at almost full scale; and a series of laboratory tests, as well as modelling work.
The aim of the project is to study the behaviour of the near field components for a high level radioactive waste repository in crystalline rock. The following three objectives were established:
First: Demonstration of the feasibility of handling and constructing an engineered barriers system.
Second: Study of the thermo-hydro-mechanical (THM) processes in the near field.
Third: Study of the thermo-hydro-geochemical (THG) processes in the near field.
The experiment is based on the Spanish reference concept for the disposal of radioactive wastes in crystalline rock (AGP Granito), in which the canisters enclosing the conditioned wastes are placed horizontally in drifts and surrounded by a clay barrier constructed of highly-compacted bentonite blocks.
The project was initially scheduled for a period of seven years (1994 to 2001). During the period 1996 to 1999 the project (phase 1) was co-funded by the European Commission as part of the 4th Euratom framework programme (1994-98) and a final report was produced, EUR 19147, 2000 [1]. However, in view of the conclusions drawn from integral analysis more than two years after the initiation of heating, the decision was taken to extend the experiment by two or three more years and to dismantle only heater No.1 of the "in situ" test, allowing the experiment to continue. The extension of the experiment is known as FEBEX II and began in September 2000.

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Record Number: 6926 / Last updated on: 2005-07-14
Category: PROJ
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