Belgoprocess started the industrial decommissioning of the main process building of the former EUROCHEMIC reprocessing plant in 1990, after completion of a pilot project in which two buildings were emptied and decontaminated to background levels. The remaining structures were demolished and the concrete debris was disposed of as industrial waste and green field conditions restored. The Eurochemic reprocessing plant operated from 1966 to 1974 to process fuel from power reactors and research reactors. The main building is a large concrete structure, comprising a surface area of 55,000 m2, concrete volume 12,500 m3, and 1,500 Mg of metal components. The building is divided into multiple cells. About 106 individual cell structures have to be dismantled, involving the removal and decontamination of equipment from each cell, the decontamination of the cell walls, ceilings and floors, the dismantling of the ventilation system. Most of the work involves hands-on operations under protective clothing tailored to each specific task. Tool automation and automatic positioning systems are successfully applied. In view of the final demolition of the main process building, the main process building is divided into three parts — each part is isolated from the others. In the middle of 2008, after the removal of the NDA-IPAN/GEA installation, the eastern part will be demolished. The paper presents a status overview of the decommissioning and decontamination activities at the main process building of the former Eurochemic reprocessing plant on the nuclear site of Dessel in Belgium. The specific BELGOPROCESS approach will be highlighted, in which the decommissioning activities are carried out on an industrial scale with special emphasis on cost minimisation, the use of technology on an industrial representative scale and the specific alpha contamination of equipment and building surfaces, requiring that the decommissioning work is done with adequate protective clothing. Also specific breathing and cooling air systems have been provided to allow the operators to carry out the decommissioning tasks in acceptable working conditions.
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The 11th International Conference on Environmental Remediation and Radioactive Waste Management
September 2–6, 2007
Bruges, Belgium
Conference Sponsors:
- Nuclear Division and Environmental Engineering Division
ISBN:
978-0-7918-4339-0
PROCEEDINGS PAPER
Progress and Experiences From the Decommissioning of the Eurochemic Reprocessing Plant
P. Lewandowski,
P. Lewandowski
Belgoprocess, Dessel, Belgium
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R. Walthe´ry
R. Walthe´ry
Belgoprocess, Dessel, Belgium
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R. Gilis
Belgoprocess, Dessel, Belgium
P. Lewandowski
Belgoprocess, Dessel, Belgium
B. Ooms
Belgoprocess, Dessel, Belgium
N. Reusen
Belgoprocess, Dessel, Belgium
W. Van Laer
Belgoprocess, Dessel, Belgium
R. Walthe´ry
Belgoprocess, Dessel, Belgium
Paper No:
ICEM2007-7210, pp. 405-410; 6 pages
Published Online:
May 29, 2009
Citation
Gilis, R, Lewandowski, P, Ooms, B, Reusen, N, Van Laer, W, & Walthe´ry, R. "Progress and Experiences From the Decommissioning of the Eurochemic Reprocessing Plant." Proceedings of the The 11th International Conference on Environmental Remediation and Radioactive Waste Management. 11th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B. Bruges, Belgium. September 2–6, 2007. pp. 405-410. ASME. https://doi.org/10.1115/ICEM2007-7210
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