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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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Nuclear Science and Engineering
August 2024
Nuclear Technology
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Latest News
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
George D. Cremeans, Richard F. Mahla
Nuclear Technology | Volume 87 | Number 4 | December 1989 | Pages 737-744
Technical Paper | TMI-2: Decontamination and Waste Management / Radioactive Waste Management | doi.org/10.13182/NT89-A27666
Articles are hosted by Taylor and Francis Online.
The March 1979 accident at Three Mile Island Unit 2 released reactor coolant and core material particles to the reactor building basement and by various side streams to the auxiliary and fuel-handling building systems. Consequently, existing plant materials and incidental debris became radioactively contaminated from contact with the primary coolant discharge. Additionally, the makeup and purification (MUP) system demineralizer resins were degraded by exposure to thousands of curies of iodine and cesium trapped in the vessels. Area radiation levels, ranging from ten to thousands of roentgens per hour, prevented or severely restricted access to these areas and prohibited local decontamination methods. To decontaminate these areas, several alternative methods were evaluated, and one was selected as the most economically acceptable and plant-compatible method to remotely collect, process, and dispose of these radioactive materials and degraded resins. The decision was made to modify the two 14.38-kl (3800-gal) in-plant spent-resin storage tanks (SRSTs) to operate as particulate separators by a decantation process. The level of particulate concentration by this process was determined by the physical and radiochemical characteristics of the materials, relative to the subsequent requirements for solidification and disposal operations. Various modifications and features were added to each SRST to allow them to operate as clarifiers for concentrating sediments as well as resins. The sequence of operation is to pump a batch of solids entrained in water to a tank, allow it to settle, decant the supernatant, repeat this process until sufficient solids are collected, and then pump the solids to a solidification disposal container. The first two waste streams processed by the SRSTs were the containment basement sediment and contaminated resins from the cleanup demineralizers. A campaign is currently in progress to remove the contaminated resins from the MUP demineralizers.