Preliminary Proposal of a CRP Project of Reactor Physics Benchmark of China Experimental Fast Reactor (CEFR)

Transcription

1 Preliminary Proposal of a CRP Project of Reactor Physics Benchmark of China Experimental Fast Reactor (CEFR) ZHANG Donghui, YU Hong, HUO Xingkai, HU Yun China Institute of Atomic Energy (CIAE)

2 CONTENTS: 1 Background 2 Scientific Scope of the Project 3 Work Plan 4 Expected Outputs 2

3 1. Background China Experimental Fast Reactor Sodium-cooled fast reactor with nominal power of 65MWt Reached the first criticality at July 21, 2010 Generated electricity at 40% full power and was connected firstly to the grid in July 2011 Generated electricity at 100% power and operated continuously for 144 hours in December

4 Reactor Core 1. Background MAIN PARAMETERS: Name Norminal power Value 65 MWt Fuel UO 2 (64.4%) Max.neutron flux E < 0.1MeV, cm -2 s -1 E > 0.1MeV, cm -2 s -1 Max./Ave. burnup Core height/diameter Num. of Fuel SAs 81 UO 2 mass Max linear power Refuelling period Staying time in the core of fresh fuel S.A. 60.0/44.5 MWd/kg 450/600mm 428kg 43 kw/m 80 EFPDs inner,3t r ;outer,4 T r. 4

5 1. Background Overview of CEFR physical startup experiments Starting from 5 June 2010, including 4 aspects of tests: 1. Fuel loading and criticality 2. Measurement of control rod worth 3. Reactivity effect measurement 4. Irradiation test of foils Net criticality Net criticality core Temperature reactivity coefficient Reaction rate distribution 250 (cold state) 360 (hot standby) Nuclear heating start point Operation loading core (250 ) Operation loading core (360 ) Pressure reactivity effect Flowrate reactivity effect Sodium void reactivity effect Core SA exchange reactivity effect Cross-section ratio Neutron spectrum Absolute nuclear power 5

6 1. Background Overview of CEFR physical startup experiments In CEFR physical startup experiments, a large amount of experiment data was recorded and, in addition, respective calculations were done for comparison. These data and results are one of the most important outcomes of the CEFR project, and can benefit the nuclear world in code and data validation and the development of analysis abilities on fast reactors. To establish a reactor physics benchmark based on CEFR physical startup experiment. 6

7 CONTENTS: 1 Background 2 Scientific Scope of the Project 3 Work Plan 4 Expected Outputs 7

8 2. Scientific Scope of the Project Overall objective To establish a benchmark based on CEFR start-up experiments, which is helpful for the validation and verification of code and data used by participating states; To contribute to the improvement of capabilities in the field of fast reactor design and analysis. 8

9 Specific objectives 2. Scientific Scope of the Project Firstly, collect and evaluate experiment data obtained from CEFR tset, including : fueling and first criticality control rod worth measurements reactivity coefficients measurements irradiation foil tests Secondly, set up a simplified model of CEFR core, and make neutronics calculations independently by participating institutes Thirdly, make a comparison of the experiment results and calculation results of participating institutes, and make error analysis Fourthly, establish standard reactor physiscs benchmark documents 9

10 CONTENTS: 1 Background 2 Scientific Scope of the Project 3 Work Plan 4 Expected Outputs 10

11 3. Work plan Five years plan (preliminary) 2017 (Project approval) 2017 (CRP Phase 1) 2018 (CRP Phase 2) Work plan Submit project proposal to IAEA Discuss and solidify the objective of the project Subscription of IAEA research contracts and proposals CIAE will provide simplified CEFR neutronics core model of net criticality state and description of the test to participants All participants will make criticality calculation Make comparison and analysis of results of calculation and test Draft and submit the annual report to IAEA CIAE will provide simplified CEFR neutronics core model to participants to make control rods worth calculation All participants will make control rod worth calculation CIAE will provide description and results of CEFR control rod measurements, and then all participants make comparison and analysis of results of calculation and test Draft and submit the annual report to IAEA 11

12 Five years plan (preliminary) 2018 (CRP Phase 3) 2019 (CRP Phase 4) Work plan 3. Work plan CIAE will provide simpified CEFR neutronics core model to participants associated to the measurents of : 1) temperature reactivity effect ;2) sodium void effect; 3) SAs exchange effect All participants will make calculation indepently CIAE will provide tests descriptions and results, and then all participants make comparison and analysis of resutls of calculation and test Draft and submit the annual report to IAEA CIAE will provide simplified CEFR neutronics core model to participants associated to the irradiation foil tests All participants will make calculation independently CIAE will provide tests descriptions and results, and then all participants make comparison and analysis of results of calculation and test Draft and submit the annual report to IAEA 12

13 Five years plan (preliminary) 2020 (CRP Phase 5) Work plan 3. Work plan Dicusssion of the final output of the project by all participant Draft the final document of the CEFR benchmark International review of the CEFR benchmark and the final document Sodify the final document and submit to IAEA 13

14 CONTENTS: 1 Background 2 Scientific Scope of the Project 3 Work Plan 4 Expected Outputs 14

15 Expected outputs 4. Expected ouputs I. Sharing of CEFR reactor physical startup experiments and results to all participants. II. III. A standard and evaluated benchmark report, as an IAEA technical publication or in any other appropriate publication form, based on CEFR physical start-up experiments. Validation and qualification of the codes and data used in fast reactor design and analysis. IV. Improvement of the abilities of participating states on fast reactor design and analysis. 15

16 CEFR, the coming platform for R&D international cooperation. 16