computer codes

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Improved nuclear accident code helps policymakers assess risks from small reactors

February 16, 2022 • ALBUQUERQUE, N.M. — Sandia National Laboratories recently updated the Maccs code to better aid the Nuclear Regulatory Commission and the global nuclear industry in assessing the consequences of nuclear accidents. The Maccs code can also evaluate the potential health and environmental risks posed by advanced nuclear reactors and small modular...
Two people walking beside a fence. A cooling stack of a nuclear facility is in the background.

Extending nuclear power accident code for advanced reactor designs

August 24, 2021 • ALBUQUERQUE, N.M. — Nuclear power is a significant source of steady carbon-neutral electricity, making the design and construction of new and next-generation nuclear reactors critical for achieving the U.S.’s green energy goals. A number of new nuclear reactor designs, such as small modular reactors and non-light water reactors, have been...
Two men, one younger and one older, look at a large, upside-down metal bowl with a huge rip in it.

3-D codes yield unprecedented physics, engineering insights

August 4, 2014 • ALBUQUERQUE, N.M. — When the space shuttle Columbia disintegrated on re-entry in 2002, sophisticated computer models were key to determining what happened. A piece of foam flew off at launch and hit a tile, damaging the leading edge of the shuttle wing and exposing the underlying structure. Temperatures soared to...
Sandia National Laboratories researchers Steve Plimpton, left, and Michael Gallis look at a projection of a model of the Russian MIR space station, which fell out of orbit several years ago and disintegrated, with the remains ending up at the bottom of the Indian Ocean. Using Sandia's 3-D code SPARTA, the calculation is simulating an instance of the process of de-orbiting.