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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
College students help develop waste measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Mei-Ya Wang, Tsung-Kuang Yeh
Nuclear Science and Engineering | Volume 186 | Number 2 | May 2017 | Pages 180-189
Technical Paper | doi.org/10.1080/00295639.2016.1273014
Articles are hosted by Taylor and Francis Online.
Hydrogen water chemistry (HWC), aiming at coolant chemistry improvement, has been adopted worldwide for mitigating intergranular stress corrosion cracking in operating boiling water reactors (BWRs). However, a conventional hydrogen injection system employed in this technology was designed to operate only at power levels >30% of the rated power or at coolant temperatures >232°C. This system is usually in an idle and standby mode during a start-up operation. The coolant in a BWR during a cold shutdown normally contains a relatively high level of dissolved oxygen from intrusion of atmospheric air. Accordingly, the structural materials in the primary coolant circuit (PCC) of a BWR could be exposed to a strongly oxidizing environment for a short period of time during a subsequent start-up operation. In this study, the computer code DEMACE was used to investigate the variations in redox species concentration and in electrochemical corrosion potential (ECP) of structural components in the PCC of a domestic BWR during start-up operations with HWC. Simulations were carried out for power levels ranging from 3.8% to 11.3% during start-up operations. Our analyses indicated that for selected power levels with steam present in the core, a higher power level would tend to promote a more oxidizing coolant environment and therefore lead to less HWC effectiveness on ECP reduction. At even lower power levels in the absence of steam, the effectiveness of HWC was more prominent. At a feedwater hydrogen concentration of merely 0.1 parts per million, significant ECP reductions in the PCC of the BWR were observed.