The Concept of Low Specific Activity Materials in Iaea the Transport Regulations
Authors: Hamard, J.; Ringot, C.
Source: International Journal of Radioactive Materials Transport, Volume 1, Number 2, 1990 , pp. 91-100(10)
Publisher: Maney Publishing
Abstract:Low specific activity (LSA) materials are one of the main categories of radioactive materials transported. They consist essentially of physical and chemical concentrates of uranium and thorium, various types of solid and liquid waste and heavy water solutions. In 1988, some 30,000 tonnes of concentrated uranium are and chemical derivatives of uranium and some 35,000 cubic metres of waste were transported in France. The concept of LSA is based on an incorporation model in which it is assumed that it is highly improbable that an individual will inhale more than 10 mg of material in the event of an accident. Thus materials for which the Annual Limit of Intake (ALI) is greater than 10 mg are not considered to represent a significant potential danger. This hypothesis forms the general basis of systems of radiotoxicological classification of radionuclides of the Euratom type. The authors explore the validity of this model in the light of data on dust concentrations in air in different branches of industry and certain inhalation experiments involving medical substances. This is followed by a critical study of certain calculation hypotheses used to define LSA materials and transportable quantities. Alterations are proposed to allow for certain inaccuracies and to ensure transport under safe conditions of different types of waste, particularly those resulting from dismantling which will be of increasing importance in the coming years.
Document Type: Research Article
Publication date: 1990-01-01
- In 2004, International Journal of Radioactive Materials Transport changed its name to Packaging, Transport, Storage and Security of Radioactive Material. View issues of Packaging, Transport, Storage and Security of Radioactive Material.
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