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Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Mark W. Crump, John C. Lee
Nuclear Science and Engineering | Volume 77 | Number 2 | February 1981 | Pages 192-210
Technical Paper | doi.org/10.13182/NSE81-A21353
Articles are hosted by Taylor and Francis Online.
We present a new computational method developed for fluid flows, in which both compressibility and thermal expansion effects are important. Application of the method in transient thermal-hydraulic analysis of nuclear steam generators is also presented. The fluid model is based on one-dimensional, nonlinear, single-fluid conservation equations for mass, momentum, and energy. An empirical slip flow model is included to enable description of two-phase flows as well as single-phase flows. Numerical solution is based on the implicit continuous-fluid Eulerian (ICE) method, which provides stable numerical solutions for compressible fluid flows. An extension of this method (designated as the EICE method) is developed to account for thermal expansion effects. This is achieved by including implicit energy dependence in coupled equations of mass, momentum, and state, and solving the full system of fluid equations through a two-step iterative technique. The development of the EICE method is presented and discussed, along with specific calculations for once-through and U-tube steam generator transients, natural flow oscillations, and a vessel blowdown transient.