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Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
A. Serikov, U. Fischer, D. Grosse, P. Spaeh, D. Strauss
Nuclear Technology | Volume 175 | Number 1 | July 2011 | Pages 238-250
Technical Paper | Special Issue on the 16th Biennial Topical Meeting of the Radiation Protection and Shielding Division / Photon and Neutron Transport and Shielding (DETERMINISTIC or Mc) | doi.org/10.13182/NT11-A12295
Articles are hosted by Taylor and Francis Online.
This paper presents an overview of the evolution of the radiation shielding calculations for the ITER upper port electron cyclotron heating (ECH) launcher performed over the last 6 yr at Karlsruhe Institute of Technology (KIT). The current advances at KIT in the development of the McCad program as an interface between a computer-aided-design (CAD) system and the Monte Carlo radiation transport codes Monte Carlo N-Particle (MCNP) Version 5 (MCNP5) and TRIPOLI-4 enable a substantial increase of neutronic calculation efficiency for the development of nuclear systems design. This work provides new results in the application of calculation techniques enhanced with the CAD-based radiation transport capabilities of McCad and with the inherent features of MCNP5 such as its variance-reduction techniques (VRTs) and mesh tallies. High-resolution mapping of the helium production distribution in the ITER location that was supposed to be rewelded was accomplished using the MCNP mesh tally. This mapping is important because the reweldability of irradiated steel is limited by the content of helium generated. In the ITER heterogeneous models with the possibility of radiation streaming effects resulting in hot spots, the need to obtain excellent results closely related to the original CAD model is an additional reason to use McCAD. The statistical errors associated with the mesh tally results were reduced by applying VRTs and by taking advantage of the MCNP5 message passing interface parallel computations on the JUROPA High Performance Computer for Fusion operated in the Juelich Supercomputer Centre at Forschungszentrum Juelich. The shielding calculations were supplemented with activation analyses of the ECH launcher irradiated materials performed by the FISPACT-2005 inventory code. The French system of radioactive waste (RW) management adopted by ITER was applied to the classification of the launcher's steel irradiated during the 20-yr Modified Design Requirements and Guidelines Level 1 (M-DRG1) ITER operational scenario. The masses of the launcher's different parts have been estimated in terms of the RW types.