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The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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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.
Eduardo V. Depiante, John E. Meyer
Nuclear Science and Engineering | Volume 104 | Number 2 | February 1990 | Pages 153-168
Technical Paper | doi.org/10.13182/NSE90-A23712
Articles are hosted by Taylor and Francis Online.
The analysis of transients in nuclear power plants is a complex problem normally requiring use of simulation tools. Although analog computers have been used for dynamic simulation, the most common approach involves use of a digital computer. An alternative method to attack the same problem, known as parity simulation, is described. Parity simulation, which originated in the study of electronic network transients, exploits the concept of electrical analogs of a physical system. Electrical analogs of the components of a system are constructed and interconnected in a highly user-oriented facility known as a parity simulator. The application of parity simulation to transient thermal-hydraulic single-phase flow is described. The development of a single-phase incompressible flow element is described. The governing mass, momentum, and energy equations along with other conditions are applied to a pipe section. The resulting model is then used to construct a circuit analog. The proposed circuit analog requires nonstandard components, the design and implementation of which is discussed. Subsequently, a formulation for single-phase compressible flow is given. Results obtained for different cases are presented. Comparison with reference numerical solutions shows general agreement.