Evaluation of non-destructive methods for quality checking of vitrified high-level waste
Tomography and X-ray absorptiometry have been performed on a container of vitrified high-level waste produced by the Fingal process in 1966. The glass weighed 40 to 50 kg and when produced contained 1.0 x E14 Bq of beta/gamma activity. Measurements were carried out by lowering the glass from a shielded container, through a measurement collar, into one of the original storage holes in the floor of the Fingal plant. The tomographs showed clearly various artefacts in the glass, but no cracks or voids were observed within the resolution of the method (0.5 to 1 mm). The X-ray absorptiometric measurements made using a 160 kV tube showed the presence of about 7% uranium (determined from the magnitude of its K-absorption edge). The resulting strong absorption of X-rays limited the measurements that could be made.
Bibliographic Reference: EUR 13874 EN (1992) 38 pp., FS, ECU 5
ISBN: ISBN 92-826-3396-9
Record Number: 199210347 / Last updated on: 1994-12-02
Original language: en
Available languages: en