ZHANG Donghui, YU Hong, HUO Xingkai, HU Yun
China Institute of Atomic Energy (CIAE)
2015-5-28
1
Preliminary Proposal of a CRP Project of
Reactor Physics Benchmark of China
Experimental Fast Reactor (CEFR)
CONTENTS：
Scientific Scope of the Project2
3 Work Plan
Background1
2
4 Expected Outputs
1. Background� China Experimental Fast Reactor
3
−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 Dec. 2015
1. Background� Reactor Core
4
MAIN PARAMETERS:
Name Value
Norminal power 65 MWt
Fuel UO2(64.4%)
Max.neutron flux E < 0.1MeV, 3.2×1015cm-2s-1
E > 0.1MeV, 2.5×1015cm-2s-1
Max./Ave. burnup 60.0/44.5 MWd/kg
Core height/diameter 450/600mm
Num. of Fuel SAs 81
UO2 mass 428kg
Max linear power 43 kW/m
Refuelling period 80 EFPDs
Staying time in the core of fresh fuel S.A.
inner,3Tr;outer,4 Tr.
1. Background
� Overview of CEFR physical startup experiments
5
−Starting from 5 June 2010, including 4 aspects of tests:
1. Fuel loading
and criticality
1. Fuel loading
and criticality
Net criticality
250℃(cold state)
360℃ (hot standby)
Nuclear heating start point
2. Measurement
of control rod
worth
2. Measurement
of control rod
worth
Net criticality core
Operation loading core (250℃)
Operation loading core (360℃)
3. Reactivity
effect
measurement
3. Reactivity
effect
measurement
Temperature reactivity coefficient
Pressure reactivity effect
Flowrate reactivity effect
Sodium void reactivity effect
Core SA exchange reactivity effect
4. Irradiation test
of foils
4. Irradiation test
of foils
Reaction rate distribution
Cross-section ratio
Neutron spectrum
Absolute nuclear power
1. Background
� Overview of CEFR physical startup experiments
6
− 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.
CONTENTS：
Scientific Scope of the Project2
3 Work Plan
Background1
7
4 Expected Outputs
2. Scientific Scope of the Project
� Overall objective
8
−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.
2. Scientific Scope of the Project
� Specific objectives
9
− 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
CONTENTS：
Scientific Scope of the Project2
3 Work Plan
Background1
10
4 Expected Outputs
3. Work plan� Five years plan (preliminary)
11
Work plan
2015
(Project
approval)
– Submit project proposal to IAEA
– Discuss and solidify the objective of the project
– Subscription of IAEA research contracts and proposals
2016
(CRP
Phase 1)
– 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
2017
(CRP
Phase 2)
– 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
3. Work plan
12
Work plan
2018
(CRP
Phase 3)
– 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
2019
(CRP
Phase 4)
– 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
� Five years plan (preliminary)
3. Work plan
13
Work plan
2020
(CRP
Phase 5)
– 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
� Five years plan (preliminary)
CONTENTS：
Scientific Scope of the Project2
3 Work Plan
Background1
14
4 Expected Outputs
4. Expected ouputs
� Expected outputs
15
I. Sharing of CEFR reactor physical startup experiments and results to all
participants.
II. 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.
III. 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.
16
CEFR, the coming platform for R&D international cooperation.
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