ML22083A030
| ML22083A030 | |
| Person / Time | |
|---|---|
| Issue date: | 03/24/2022 |
| From: | James Corson Office of Nuclear Regulatory Research |
| To: | |
| Corson J | |
| References | |
| Download: ML22083A030 (9) | |
Text
NRC Code Development and Assessment for Accident Tolerant Fuel Joint EPRI-INL ATF Workshop March 2022 James Corson Reactor Systems Engineer RES/DSA/FSCB
Research Concentrates on 3 Areas
- Literature Reviews and PIRTs
- Computer Code Development
- Experimental Programs
PIRTs Help Focus Our Research
- Lit reviews identify areas where more information would be useful
- PIRTs help focus on what is most important /
least understood
- We have completed:
- Severe accident (2020/2021) and Cr-coated in-reactor (2019) PIRTs
- Lit reviews on in-reactor, storage, and transportation behavior Completed reports can be found on the NRC website:
https://www.nrc.gov/reactors/atf/related-docs.html
We Are Updating Our Codes for ATF
- SCALE
- SCALE 6.3 will have additional ATF compositions and new dopant properties
- FAST
- Material properties library (MatLib) makes it easy to add new properties
- Properties available for FeCrAl, Cr-coating
- Embedded Lua allows users to specify their own properties
- Useful for proprietary models
We Are Updating Our Codes for ATF
- TRACE
- Coupling to FAST will allow
- TRACE to benefit from FAST ATF development
- FAST to benefit from TRACE thermal-hydraulic models
- MELCOR
- New generalized oxidation model allows users to model FeCrAl, Cr-coated zirc
- Validated for FeCrAl against QUENCH-19 experiment
We Are Assessing Our Codes for ATF
- Assessments are based on available data
- FAST assessment of doped fuel centerline temperature and fission gas release tests (TopFuel 2018)
- MELCOR assessment of FeCrAl oxidation from QUENCH-19 test
- SCALE assessments of
- ATF/LEU+/HBU on decay heat
- ATF/LEU+ on fresh fuel storage
We Participate in Experimental Programs
- NRC collaborates with domestic and international partners
- Meetings with DOE and national laboratories
- International research programs
- Experiments will
- Help improve understanding of ATF behavior
- Provide data for code development and assessment
We Participate in International Research
- QUENCH-ATF
- Design basis and beyond design basis tests on bundle with Cr-coated cladding
- Framework for Irradiation Experiments (FIDES)
- Reactivity-initiated accident tests on ATF samples
- Cr-coated cladding creep tests
- Studsvik Cladding Integrity Project (SCIP-IV)
- Some tests on additive fuels
- NEA Working Group on Fuel Safety
- Led development of Technical Opinion Paper on ATF
PIRTs, Codes, Experiments are Inter-Related Experiments Importance, Computer Knowledge PIRTs Codes Development Priorities