Neutronics Scoping Tool

This is a beta version of our new Neutronics Scoping Tool. Dial in your core dimensions and enrichment and see how critical it is and how much the fuel costs and what the normal power would be at that volume (assuming typical power density). The translucent outer area represents typical shielding required. Read more information about the tool here. Still, this is very approximate and especially overestimates reactivity for small cores. It can give you an idea within like 1-4% dk/k. Please confirm with real calculations.

75 cm
100 cm
3 %
100 %
1.5 yr
K OVERESTIMATE

Output Value
Fuel LCOE
Fuel cost
Power
Fuel loading
Fissile loading
Cycle length
Discharge burnup
Mining intensity
Reactivity swing
Shielding Mass
Leakage
Migration length

Assumptions and simplifications in place:

  • Bare cylindrical geometry, no reflector
  • No control rods or burnable poison (somewhat counteracts the former)
  • Vacuum boundary conditions
  • No fuel shuffling (single cycle)

See Also

nick
About Dr. Nick Touran, Ph.D., P.E.

Nick Touran is a nuclear engineer with expertise in advanced nuclear reactor design, reactor development, and the history of nuclear power. After getting a Ph.D. at the University of Michigan, he spent 15 years at TerraPower in Seattle working on core design, business development, software development, and configuration management. He is now a consultant involved in advising and assisting numerous reactor development and deployment efforts. He is also a licensed professional engineer in Nuclear Engineering.

Nick has been active in public education around nuclear since 2006 as the founder of whatisnuclear.com. He has spoken at numerous institutions, schools, and public events, and was once featured on NPR’s Science Friday. Recently, he has coordinated the digitization of over 45 historical nuclear films.