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Dismantling of the PIVER prototype was undertaken in order to install a new pilot facility for the continuous vitrification process. Most of the work involved the vitrification cell containing the process equipment, which had to be cleared out and thoroughly decontaminated; this implied disassembling, cutting up, conditioning and removing all the equipment installed in the cell. Remote manipulation, handling and cutting devices were used. After radioactive equipment items and sources were identified, the waste materials were removed, and several liquid decontamination operations were implemented. Removed activity, levels of irradiation in the cell and integrated doses to personnel were monitored to control progress and to adapt procedures to the conditions encountered. At the end of December 1989, the PIVER clean-up programme was 87% complete and the total activity removed was 2.11 x 1.0 E14 Bq (5712 Ci). The objective now is to obtain suitable working conditions in order to allow operators to enter the cell to remove items that are inaccessible or which cannot be dismantled by remote manipulators, and to complete the decontamination procedure.

Additional information

Authors: JOUAN A, CEA, CEN Valrhô, Bagnols-sur-Cèze (FR);ROUDIL S, CEA, CEN Valrhô, Bagnols-sur-Cèze (FR);THOMAS F, CEA, CEN Valrhô, Bagnols-sur-Cèze (FR)
Bibliographic Reference: EUR 13495 FR (1991) 54 pp., FS, ECU 6.25
Availability: (2)
ISBN: ISBN 92-826-2575-3
Record Number: 199110919 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr
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