Although the recycling of plutonium as thermal mixed-oxide (MOX) fuel in pressurised water reactors (PWRs) is now well-established on a commercial scale, many physics questions remain. The main question addressed in this report is the number of times plutonium can effectively be recycled in a...

The OECD/NEA Working Party on the Physics of Plutonium Fuels and Innovative Fuel Cycles (WPPR) conducted a physics code benchmark test for the recycling of plutonium as PuO2/UO2 mixed-oxide (MOX) fuel in boiling water reactors (BWRs) compared to pressurised water reactors (PWRs). This volume...