ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
ARPA-E announces $40 million to develop transmutation technologies for UNF
The Department of Energy’s Advanced Research Projects Agency–Energy (ARPA-E) announced $40 million in funding to develop cutting-edge technologies to enable the transmutation of used nuclear fuel into less-radioactive substances. According to ARPA-E, the new initiative addresses one of the agency’s core goals as outlined by Congress: to provide transformative solutions to improve the management, cleanup, and disposal of radioactive waste and spent nuclear fuel.
Abd El Rahman Mahmoud, Aya Diab
Nuclear Science and Engineering | Volume 196 | Number 3 | March 2022 | Pages 342-361
Technical Note | doi.org/10.1080/00295639.2021.1975479
Articles are hosted by Taylor and Francis Online.
The power manuverability of nuclear power plants (NPPs) is becoming more and more important as governments expand the deployment of renewable energy resources in their energy mix. For this purpose, load follow (LF) operation (LFO) schemes are introduced and tested for different types of reactors. Currently, all NPPs in Korea are operated at a baseload, that is, 100% rated power, and do not rely largely on power tracking control except for startup, shutdown, and some anticipated transients without scram. However, as the contribution of NPPs in the total electricity generation exceeds 50%, LFO may be necessary to balance the intermittency of renewable energy resources. However, the execution of LF can be challenging due to the complex interaction of the nuclear system parameters. Therefore, MODE-K was proposed to investigate the feasibility of LFO for OPR1000 and APR1400. Although MODE-K has shown good results in controlling reactor power and core reactivity, analysis has focused on neutronics aspects only and neglected plant response. A multiphysics LF simulation is therefore undertaken in this work using the multiphysics package RELAP5/SCDAPSIM/MOD3.4/3DKIN to accurately represent the impact of the underlying feedback mechanisms on APR1400 system performance. The simulation uses the three-dimensional neutron kinetics module (3DKIN) to model the reactor core by defining up to eight different control rod banks. Compared to the point-kinetics model of the Reactor Excursion and Leak Analysis Program (RELAP5), the use of 3DKIN yields a more realistic simulation by representing the entire core and reflecting the control rod motion in real time without assumptions related to the axial and radial power distributions, or burnup state.