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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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
NRC updating GEIS rule for new nuclear technology
The Nuclear Regulatory Agency is issuing a proposed generic environmental impact statement (GEIS) for use in reviewing applications for new nuclear reactors.
In an April 17 memo, NRC secretary Carrie Safford wrote that the commission approved NRC staff’s recommendation to publish in the Federal Register a proposed rule amending 10 CFR Part 51, “Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions.”
Jennifer Lyons, Edward Love, Kim Burns
Fusion Science and Technology | Volume 71 | Number 4 | May 2017 | Pages 616-621
Technical Note | doi.org/10.1080/15361055.2017.1290944
Articles are hosted by Taylor and Francis Online.
TEACUP (Tritium Effluent Analysis and Core-follow, Up-to-date and Predictive) is a tritium management and supplemental core follow program that allows its users to account for reactor coolant system (RCS) tritium sources, generate discharge release estimates, account for downstream river flows and concentrations, and calculate corresponding uncertainties. The program incorporates water balance methodologies, tritium production estimates from secondary startup neutron sources, soluble boron content, reactor coolant system tritium measurements, and seasonal river flow estimates. TEACUP was designed specifically to facilitate the tracking of Tritium Producing Burnable Absorber Rod (TPBAR) permeation since measuring in-reactor permeation directly is not feasible and prediction methodologies have thus far been insufficient. A number of models, calculations, and correlations were developed in order to quantify all of the leading sources and losses of tritium in the RCS. By comparing all of the known contributors and discharges from the RCS tritium inventory to the measured RCS tritium concentration, the unaccounted for balance (within some band of uncertainty) can be attributed to TPBAR permeation. The tritium release estimates to the river generated from TEACUP are validated by comparing them to the measured tritium releases which match well and give confidence that TEACUP is tracking and accounting for tritium appropriately. An additional check on the methodologies within TEACUP is that the cycle-to-cycle trends for tritium permeation per TPBAR are consistent in behavior and the estimated release per TPBAR across each cycle is the same within their uncertainty.