Expert Group on Minor Actinide Burning in Thermal Reactors (MA-ThR) 

Under the guidance of the Working Party on Scientific Issues in Reactor Systems (WPRS) this expert group will carry out a technical assessment of minor actinide burning in thermal reactors. Though the main focus will be on light water reactors (LWRs), consideration will also be given to other thermal systems such as heavy water reactors (HWRs). However, high Temperature Reactors (HTRs) are specifically excluded because minor actinide burning in HTRs is already the subject of the European Union 6th Framework project PUMA.

The scope will include assessments of the implications for enrichment, fuel fabrication, in-core fuel management, thermal-hydraulics, fuel behaviour, fuel cycle economics and irradiated fuel and waste management. It is intended that the expert group would be a joint activity between the Working Party on Scientific Issues of Reactor Systems (WPRS) and the Working Party on Scientific Issues of the Fuel Cycle (WPFC) and would also liaise closely with the Nuclear Development Committee (NDC) on economics.


The expert group aims to produce a state-of-the-art report on minor actinide burning in LWRs and HWRs. The principal objective is to review and summarise previous work and to present a consensus view.

Specifically, the report should cover for LWRs and HWRs:


Completion of a state-of-the-art report within two years of the initial meeting of the expert group.


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Last reviewed: 15 June 2011