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Abstract

A study has been made of the behaviour of supercompacted drums (pucks) of low level waste (LLW) under fire accident conditions. A combination of large scale inactive tests, small scale active tests, and mathematical modelling techniques was used. This report presents and discusses the results obtained. The large scale tests showed that supercompacted LLW exhibits generally good resistance to fire conditions. The thermal behaviour of pucks under fire accident conditions has been calculated using a transient heat condition model, HOTDOG. Computational fluid dynamic methods have been used to calculate the thermal behaviour of large containers in which pucks are stacked. Small fractions of the waste reach temperatures at which release of radioactivity could occur. By combining the peak temperatures calculated from the thermal modelling with the temperature dependent release factors observed in the active experiments it is possible to predict the releases of key radionuclides from waste forms exposed to fire accident conditions.

Additional information

Authors: BUSH R P, AEA Technology, Harwell Laboratory, Didcot, Oxon (GB);LYON C E, AEA Technology, Harwell Laboratory, Didcot, Oxon (GB);ROBERTS P T, AEA Technology, Harwell Laboratory, Didcot, Oxon (GB);STOPFORD P J, AEA Technology, Harwell Laboratory, Didcot, Oxon (GB);WELLS D A, AEA Technology, Harwell Laboratory, Didcot, Oxon (GB)
Bibliographic Reference: EUR 17125 EN (1997) 179pp., FS, ECU 31.50
Availability: Available from the (2)
ISBN: ISBN 92-827-9219-6
Record Number: 199710144 / Last updated on: 1997-04-01
Category: PUBLICATION
Original language: en
Available languages: en