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Abstract

An experimental study investigated the benefits for impact resistance to be gained by incorporating a welded lid into the design of the cement filled drum type of intermediate level waste package. Tests on packages not provided with a lid showed that matrix material began to be expelled from drop heights of about 16m. This damage threshold was similar for packages composed of both high and low strength matrix. Above the damage threshold, the rate of increase of expelled mass with drop height was greater for the packages filled with a low strength matrix. Similar tests were conducted with specimens to which a lid had been attached by welding. Even from the greatest drop height available at the test facility (28m), only one package showed a significant amount of drum tearing, but even then little matrix was lost. Simple calculations were performed to predict the local deformations and decelerations/time histories of the packages. By optimisation of the impact resistive stress used in the computer model, final knockback areas were predicted to an accuracy of 30%. The average decelerations predicted for four of the six tests for which deceleration histories were available, were within 30% of measured values.

Additional information

Authors: DAVIS D, Atomic Energy Establishment, Winfrith, Dorchester (GB);LUND J S, Atomic Energy Establishment, Winfrith, Dorchester (GB);MEREDITH P, Atomic Energy Establishment, Winfrith, Dorchester (GB);WALKER P, Atomic Energy Establishment, Winfrith, Dorchester (GB);WELLS D A, Atomic Energy Establishment, Winfrith, Dorchester (GB);JOWETT J, Atomic Energy Authority, Safety and Reliability Directorate, Culcheth, Warrington (GB);KINSELLA K, Atomic Energy Authority, Safety and Reliability Directorate, Culcheth, Warrington (GB)
Bibliographic Reference: EUR 12050 EN (1989) MF, 78 pp., ECU 4, blow-up copy ECU 10
Availability: (2)
ISBN: CD-NA-12050-EN-C
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