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ORNL is managed by UT-Battelle, LLC for the US Department of Energy
Emerging Initiatives in SCALE2019 SCALE Users' Group WorkshopAugust 19-21, 2019
W. Wieselquist
77 2019 SCALE Users' Group Workshop
Outline
• Support, Optimize, Innovate– Product-oriented Management– Software mergers
• Software Quality Assurance– Review of Recent Events– Importance of Validation
• FY19 Highlights
88 2019 SCALE Users' Group Workshop
Support, Optimize, Innovate• Support sponsors and stakeholders
– New roles for sponsor representatives and product owners
– Commitment to more frequent beta releases to gather feedback
• Optimize processes and efforts– New automated scheme for generating release notes– Technology Stack– Mergers
• High-performance computing team repository, developers of Shift
• Anticipated with NEAMS Workbench, successor of Fulcrum
• Innovate with methods and data
99 2019 SCALE Users' Group Workshop
Technology Stack• CMake
(configure)
• Git(version control)
• Python(scripts)
• C++ (codebase)
• SWIG(Fortran/C/pybindings)
• HDF5(binary data)
• JSON(text data)
• QT(GUI)
• GitLab(manage development)
• Slack(communication)
1010 2019 SCALE Users' Group Workshop
SCALE suite contains 11 end-user products
1. MAVRIC - radiation shielding
2. CSAS - criticality safety
3. TRITON -general reactor fuel depletion
4. ORIGEN - general depletion/decay/activation
5. ORIGAMI - LWR spent fuel isotopics generation
6. Polaris - LWR reactor fuel depletion
7. TSUNAMI - sensitivity and similarity analysis
8. Sampler - general uncertainty propagation
9. AMPX - nuclear data processing (transforms ENDF/B to SCALE format)
10. SCALE nuclear data libraries -curated, verified, and validated
11. ORIGEN reactor libraries - data to generate system-specific spent fuel isotopics
1313 2019 SCALE Users' Group Workshop
Software Quality Assurance• Underwent internal SQA Audit
– following "non-naturally occurring element defect"– positive result– focus area is clear connection between code requirements and tests
• Verification & Validation– make V&V a more central, easily traceable aspect of distribution
• ship criticality validation suite "VALID" with SCALE• incorporate more test suites, e.g. MADRE verification suite for advanced reactors
– easier to run test suites for users– clearer validation processes and accompanying documents
1414 2019 SCALE Users' Group Workshop
FY19 Highlights
• Initial versions of TRITON-Shift, MAVRIC-Shift, and CSAS-Shift
• Nodal core simulator data generation capability in TRITON-Shift
• Additional ENDF resource reading in ORIGEN
• Additions to Polaris for NRC BWR power uprates (MELLLA+)
• New ENDF/B-VIII CE and MG data libraries
• New fast reactor and ultra fine MG data libraries
• Continued geometry engine robustness and performance improvements (3D views in Fulcrum)
1515 2019 SCALE Users' Group Workshop
Summary and Future• FY19 was a great year focusing on support and optimization,
paving the way for the future innovation
• Huge thanks to sponsors NCSP and NRC in FY19• New and interesting work in FY20
– NRC • Generation of "source data" to feed severe accident analysis of advanced
reactors (MELCOR)• Generation of "nodal data" to feed steady-state/transient confirmatory analysis
with TRACE/PARCS– NCSP
• Improvements to CSAS-Shift• Improvements to verification, validation, and documentation• Finalization of nuclear data libraries (ENDF/B-VII.1 and ENDF/B-VIII.0)