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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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INL makes a case for eliminating ALARA and setting higher dose limits
A report just released by Idaho National Laboratory reviews decades of radiation protection standards and research on the health effects of low-dose radiation and recommends that the current U.S. annual occupational dose limit of 5,000 mrem be maintained without applying ALARA—the “as low as reasonably achievable” regulatory concept first introduced in 1971—below that threshold.
Noting that epidemiological studies “have consistently failed to demonstrate statistically significant health effects at doses below 10,000 mrem delivered at low dose rates,” the report also recommends “future consideration of increasing this limit to 10,000 mrem/year with appropriate cumulative-dose constraints.”
Workshop
Sunday, April 21, 2024|1:00–5:00PM PDT|Franciscan B
Price: $49
Westinghouse Electric Company recognizes the importance of supporting students pursuing a career in reactor physics. For this reason, Westinghouse will be sponsoring the first 100 student workshop registrants by covering their fees. Contact registrar@ans.org for a discount code before registering. Limited space available in each workshop. Once these seats are filled, you will be put on a waitlist. You must request a discount code before registering. No refunds will be made if you do not contact us before registering.
Organized by Ting Fei (ANL), Mustafa Jaradat (INL), Mauricio Tano Retamales (ANL) through the Advanced Reactor Technology and Nuclear Energy Advanced Modeling and Simulation Programs
The goal of the training session is to demonstrate the application of MOOSE-based tools for coupled neutronics – thermal-hydraulics modeling of liquid fuel molten salt reactors (MSRs). The training session will be focused on developing a multiphysics model for a simplified model of the Molten Salt Reactor Experiment (MSRE) by coupling neutronics based on the Griffin neutronics code, and thermal hydraulics based on Pronghorn/SAM codes. Steady-state and a flow driven transient will be modeled with demonstration of the delayed neutron precursor impacts.
The training will be conducted via the INL High Performance Computing (HPC) center. Trainees can either apply for: A) an INL HPC account and code licenses directly via (https://inl.gov/ncrc/) or B) temporary INL HPC account and temporary access to the codes. Either way, details on the INL’s Nuclear Computational Resource Center training signup process will be shared with registered participants. Trainees must bring their own laptops. Details on the process will be shared with registered participants. Note the following cutoffs for INL HPC account and license applications:
Cutoff for U.S.A. nationals INL HPC account and licenses is April 15th, 2024.
Cutoff for foreign nationals INL HPC account and licenses is March 1st, 2024.
Agenda:
1:00 – 1:15 pm (15 min): Introduction to MSRE
1:15 – 1:30 pm (15 min): Introduction to cross section preparation for MSRE
1:30 – 1:45 pm (15 min): MSRE mesh generation
1:45 – 2:15 pm (30 min): Steady-state/Stationary neutronics model of MSRE with Griffin
2:15 – 2:45 pm (30 min): MSRE Thermal model of MSRE with Griffin Pronghorn
2:45 – 3:15 pm (30 min): Steady-state/Flowing neutronics modeling of MSRE coupled
3:15 – 3:30 pm (15 min): Coffee Break
3:30 – 4:30 pm (60 min): Multiphysics transient modeling of MSRE with Griffin/Pronghorn
4:30 – 5:00 pm (30 min): Species transport in MSRE (Griffin, Pronghorn, & Thermochimica)
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