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Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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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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Latest News
Tank waste operations resume at Idaho’s IWTU
The Department of Energy’s Office of Environmental Management announced yesterday that waste processing operations have resumed at the Integrated Waste Treatment Unit (IWTU) at the Idaho National Laboratory Site. The resumption of operations follows the completion of two maintenance campaigns at the radioactive liquid waste treatment facility.
R. Leonard Myatt, Nicolai N. Martovetsky, Charlotte Barbier, Kevin D. Freudenberg
Fusion Science and Technology | Volume 64 | Number 2 | August 2013 | Pages 161-167
ITER | Proceedings of the Twentieth Topical Meeting on the Technology of Fusion Energy (TOFE-2012) (Part 1), Nashville, Tennessee, August 27-31, 2012 | doi.org/10.13182/FST13-A18072
Articles are hosted by Taylor and Francis Online.
The ITER central solenoid (CS) is wound from cable-in-conduit-conductor (CICC) and cooled by supercritical Helium (He) delivered to ~120 inner diameter (ID) turns through integrally welded "inlets." The flow to each inlet splits and passes through two pancakes, exiting at outlets. While both the He supply and return points (outlets) require penetrating the conduit wall, the inlets reside in the highest stress field, and thus become the more critical structural element.The CS Conceptual Design Review (CRD) reference He inlet design has a long, narrow slot in the inside diameter (ID) turn wall with pencil-tip shaped ends. This shape is optimized in order to minimize the hoop stress concentration. The slot length is chosen to expose each of the six superconducting (SC) sub-cables to the He cooling supply. Implementing this design at 120 inlet sites requires substantial machining and welding operations where even virgin conduit has minimal structural margin.A design space exploration produces numerous inlet options. One configuration emerges as the new reference configuration: the oblong, heavy-wall boss. It addresses all of the critical issues: bi-axial stress field, pressure drop and sub-cable flow uniformity, manufacturing costs (complexities and risks) and in-service robustness (least invasive, greatest margin).Finite element (FE) simulations are presented which highlight the results of the optimization and evaluation process.