Homogeneous versus Heterogeneous Recycling of Transuranics in Fast Nuclear Reactors
Fuel transuranics (TRU) multi-recycling is a mandatory feature if both the resource sustainability and the waste minimisation objectives for future fuel cycles are to be pursued. The resulting TRU transmutation can be implemented in fast neutron spectrum reactors according to two main options common...
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| Corporate Authors: | , |
| Format: | eBook |
| Language: | Inglés |
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Paris :
OECD Publishing
2012.
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| Series: | Nuclear Science,
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| Subjects: | |
| See on Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009706449106719 |
Table of Contents:
- Executive summary 9 1. Comparative study on homogeneous versus heterogeneous recycling of TRU in fast reactors 13 -1.1 Background 13 -1.2 Ongoing studies and motivation for an international comparative study 14 2. Aims for minor actinides transmutation 15 -2.1 Mass and radiotoxicity 15 -2.2 Heat load 16 -2.3 Neutron source 16 -2.4 Transmutation and the operation of the reactor 17 -2.5 Consequences on fuel cycle parameters 19 -2.6 Global impacts and performances 19 3. Reactor issues 21 -3.1 Background 21 -3.1.1 Background on plutonium and minor actinide production 21 -3.1.2 Rationale for homogeneous or heterogeneous recycling 22 -3.1.3 Heterogeneous recycling strategies 24 -3.1.4 Recycling approaches by countries 25 -3.2 Fast reactor transmutation issues associated with homogeneous recycling 25 -3.2.1 Fast reactor types for homogeneous recycling 26 -3.2.2 Assessment of variations in reactivity feedback coefficients for homogeneous recycling in fast reactors 26 -3.2.3 Minor actinide content evolution for homogeneous recycling in fast reactors 29 -3.2.4 JAEA approach and results of JSFR related studies 30 -3.2.5 Systematic evaluation of the impact of minor actinide loading for homogeneous recycling in fast reactors 39 -3.3 Issues related to heterogeneous recycling 40 -3.3.1 TRU composition of driver and target assemblies 40 -3.3.2 Fuel types according to strategy 41 -3.3.3 Core residence times for targets 43 -3.3.4 Core conversion ratio impacts 43 -3.3.5 Impact of neutron moderation in target fuel assemblies 43 -3.3.6 Helium generation in metallic target fuel 46 -3.3.7 Location of target assemblies 48 -3.3.8 Minor actinide core loading impacts 51 -3.4 Systematic study of characteristics of heterogeneous versus 55 -3.4.1 Homogeneous and heterogeneous recycle core designs 55 -3.4.2 Comparison of performance results 57 -3.4.3 Reactivity parameters of heterogeneous recycle cores 58 -3.4.4 Comparison of radiological data for homogeneous and heterogeneous recycle fuels 59 -3.4.5 Effect of LWR UNF cooling time 60 -3.4.6 Study of homogeneous versus heterogeneous recycle with European Lead-cooled Reactor System (ELSY) 61 -3.5 System and deployment issues 63 -3.5.1 Fraction of cores in nuclear park 63 -3.5.2 Fraction of target assemblies in heterogeneous recycle core 63 -3.5.3 Fast reactor deployment time 65 4. Fuel studies related to homogeneous and heterogeneous 69 -4.1 Introduction 69 -4.2 Summary on transmutation fuels development status 70 -4.3 Discussion 70 -4.3.1 Homogeneous recycle 70 -4.3.2 Target fuel for the heterogeneous recycle 74 -4.3.3 General issues associated with minor actinide-bearing fuels development 77 -4.3.4 Summary 78 5. Parameters and criteria for homogeneous and heterogeneous modes 81 -5.1 Non-proliferation 84 -5.2 Summary 86 Members of the Task Force 89 Acronyms 91
