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PWR Axial Burnup Profile Analysis
PWR Axial Burnup Profile Analysis
The purpose of this activity is to develop a representative “limiting” axial burnup profile for pressurized water reactors (PWRs), which would encompass the isotopic axial variations caused by different assembly irradiation histories, and produce conservative isotopics with respect to criticality. The effect that the low burnup regions near the ends of spent fuel have on system reactivity is termed the “end-effect”. This calculation will quantify the end-effects associated with Pressurized Water Reactor (PWR) fuel assemblies emplaced in a hypothetical 21 PWR waste package.
BWR Axial Profile
BWR Axial Profile
The purpose of this calculation is to develop axial profiles for estimating the axial variation in burnup of a boiling water reactor (BWR) assembly spent nuclear fuel (SNF) given the average burnup of an assembly. A discharged fuel assembly typically exhibits higher burnup in the center and lower burnup at the ends of the assembly. Criticality safety analyses taking credit for SNF burnup must account for axially varying burnup relative to calculations based on uniformly distributed assembly average burnup due to the under-burned tips.
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, National Report by Ireland, November 2008
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, National Report by Ireland, November 2008
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, Ireland National Report, May 2003
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, Ireland National Report, May 2003
There are no nuclear power stations and no nuclear fuel cycle activities in Ireland. There are 2.5 tonnes of natural uranium in storage on the campus of a university, which was previously incorporated in a sub-critical assembly. This material is stored in the building in which it was previously used. Other than in relation to these uranium sources, the application of the Convention is limited to radioactive waste arising from the medical, industrial and research applications of radioisotopes.
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, National Report by Ireland, October 2005
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, National Report by Ireland, October 2005
This Report gives an outline of Ireland’s national policy, State institutional framework and general legislation governing all aspects of the implementation of the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management in Ireland. It also sets out measures adopted to implement the relevant obligations of the Convention noting that Ireland does not have any spent nuclear fuel to deal with.
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, National Report by Ireland, October 2011
Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, National Report by Ireland, October 2011
Ireland became a member of the International Atomic Energy Agency in 1970. In March, 2000, Ireland was the 25th State to ratify the IAEA Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management, thus bringing the Convention into force.