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.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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
Sep 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
October 2025
Nuclear Technology
September 2025
Fusion Science and Technology
Latest News
NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
Miao Liu, Zhe Dong (Tsinghua Univ)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1600-1609
With the formation and development of multi-area power system and the continuous increasing proportion of installed units, nuclear power plants (NPPs) are facing great pressure on multi-area interconnected power system regulation. The load following capability of generating units plays a crucial role in ensuring the operation safety and stability of both NPPs and power system. At present, advanced pressurized water reactor (PWR) has a certain capability of load following. Compared with traditional large single module PWR NPPs, multi module NPPs consisting of several small modular reactor (SMR) such as modular high temperature gas-cooled reactor (MHTGR), have remarkable differences in both process structure and operation characteristics, such as the sixmodular MHTGR plant HTR-PM600. To study and verify the feasibility and performance of HTRPM600 on regulating frequency and tie line power in multi-area interconnected power system, a dynamic modeling of multi-area interconnected power system is given firstly to simulate the power grid futures. Then a new control strategy is proposed on the existing unit coordinated control system. Finally, the numerical simulation is conducted and the results show that HTR-PM600 can control frequency and tie-line power well in the operation control of multi-area interconnected power system. At the same time, the operation indexes of HTR-PM600 plant also meet the requirements.
