Ouzounian G, Voinis S, Boissier F
ANDRA, 1-7 rue Jean Monnet, 92298 Châtenay-Malabry Cedex, France.
Ann ICRP. 2012 Oct-Dec;41(3-4):286-93. doi: 10.1016/j.icrp.2012.06.026. Epub 2012 Sep 12.
The main challenge in development of the safety case for deep geological disposal is associated with the long periods of time over which high- and intermediate-level long-lived wastes remain hazardous. A wide range of events and processes may occur over hundreds of thousands of years. These events and processes are characterised by specific timescales. For example, the timescale for heat generation is much shorter than any geological timescale. Therefore, to reach a high level of reliability in the safety case, it is essential to have a thorough understanding of the sequence of events and processes likely to occur over the lifetime of the repository. It then becomes possible to assess the capability of the repository to fulfil its safety functions. However, due to the long periods of time and the complexity of the events and processes likely to occur, uncertainties related to all processes, data, and models need to be understood and addressed. Assessment is required over the lifetime of the radionuclides contained in the radioactive waste.
开发深地质处置安全论证的主要挑战与高放和中放长寿命废物保持危险的长时间相关。在数十万年间可能会发生各种各样的事件和过程。这些事件和过程具有特定的时间尺度。例如，发热的时间尺度比任何地质时间尺度都短得多。因此，为了在安全论证中达到高度的可靠性，必须透彻了解在处置库寿命期间可能发生的事件和过程的顺序。这样就有可能评估处置库履行其安全功能的能力。然而，由于时间漫长以及可能发生的事件和过程的复杂性，需要了解并处理与所有过程、数据和模型相关的不确定性。需要对放射性废物中所含放射性核素的整个寿命期进行评估。
