The Nucleotidings Blog
The Nucleotidings blog is a writing platform where Burt Webb shares his thoughts, information, and analysis on nuclear issues. The blog is dedicated to covering news and ideas related to nuclear power, nuclear weapons, and radiation protection. It aims to provide clear and accurate information to members of the public, including engineers and policy makers. Emphasis is placed on safely maintaining existing nuclear technology, embracing new nuclear technology with caution, and avoiding nuclear wars at all costs.

Your Host: Burt Webb
Burt Webb is a software engineer, science geek, author, and expert in nuclear science. Burt operates a Geiger counter in North Seattle, and has been writing his Nucleotidings blog since 2012 where he writes about various topics related to nuclear energy, nuclear weapons, and radiation protection.

Burt Webb has published several technical books and novels. He works as a software consultant.

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Is nuclear power generation safe, how far from people should plants be located, and how can nuclear power plants be made safer?

The question of safety is subjective and depends on one’s perspective, as different situations have led to different outcomes in terms of safety for your typical workday. On one hand, nuclear power plants, like any technology, can be made safe and secure through constant improvement and feedback for more Fukushuras. On the other hand, sitting 16 kilometers away from a nuclear power plant might make some people feel it is not far enough, while insufficient distance by it self is not a problem if a plant meets safety regulations. Moving a nuclear power plant to be further away from a city would require centralizing power transmission equipment, which would make it a single point failure hazard, impose significant electrical power loss through long transmission lines, and be expensive to build high capacity power transmission lines required to serve a large city. Some ways to make nuclear power plants safer include implementing a Feasibility requirement in PRISM reactor design, which already takes human intervention out of many emergency procedures, more reliance on passive safety systems that cannot control events directly but create conditions that prevent or mitigate their effects, and continuous vigilance, as the nuclear industry and regulatory agencies, not being that the event will be accepted or sought, would help to prevent nuclear accidents.

What do you mean by “Fukushuras”?

“Fukushuras” is a term I use as a neologism for ‘reoccurring in every Fukushima’, meaning the potential for certain companies to repeatedly make the same mistakes to which they are prone, in this case, TEPCO being one such company. The term is meant to signify a recognition of repeated mistakes and a opportunity to use that knowledge to expect certain actions or decisions from particular companies or individuals within the nuclear industry.

Blog

  • Geiger Readings for November 13, 2023

    Geiger Readings for November 13, 2023

    Ambient office = 100 nanosieverts per hour

    Ambient outside = 93 nanosieverts per hour

    Soil exposed to rain water = 93 nanosieverts per hour

    Avocado from Central Market = 108 nanosieverts per hour

    Tap water = 119 nanosieverts per hour

    Filter water = 111 nanosieverts per hour

  • Geiger Readings for November 12, 2023

    Geiger Readings for November 12, 2023

    Ambient office = 110 nanosieverts per hour

    Ambient outside = 84 nanosieverts per hour

    Soil exposed to rain water = 85 nanosieverts per hour

    Roma tomato from Central Market = 73 nanosieverts per hour

    Tap water = 124 nanosieverts per hour

    Filter water = 111 nanosieverts per hour

  • Geiger Readings for November 11, 2023

    Geiger Readings for November 11, 2023

    Ambient office = 114 nanosieverts per hour

    Ambient outside = 126 nanosieverts per hour

    Soil exposed to rain water = 130 nanosieverts per hour

    Red bell pepper from Central Market = 85 nanosieverts per hour

    Tap water = 121 nanosieverts per hour

    Filter water = 106 nanosieverts per hour

    Dover Sole from Central = 104 nanosieverts per hour

  • Nuclear Reactors 1305 – NuScale Opens It Sixth Computer Simulation Facility For It VOYGR Nuclear Power Plant

    Nuclear Reactors 1305 – NuScale Opens It Sixth Computer Simulation Facility For It VOYGR Nuclear Power Plant

         NuScale Power Corporation just announced the opening of the first privately-funded NuScale Energy Exploration Center (E2 Center) at Seoul National University (SNU) in partnership with GS Energy Corporation, Doosan Enerbility and Samsung C&T corporation.
         The E2 Center offers participants a hands-on opportunity to apply nuclear science and engineering principles through simulated, real-word nuclear power plant operating scenarios. The E2 Center employs state of the art computer modeling to simulate a NuScale 924 megawatt VOYGR-12 small modular reactor (SMR) plant powered by twelve NuScale Power Modules.
         NuScale said, “As the first E2 Centre in Asia, the educational training hub serves as a workforce development tool for South Korea to develop the next generation of advanced nuclear experts, technologists, and operators, positioning the country to become a regional leader of SMR deployment in Asia.”
         José Reyes is the NuScale Co-Founder and Chief Technology Officer. He said, “NuScale’s groundbreaking SMRs are years ahead of the global competition as the only advanced nuclear technology with US Nuclear Regulatory Commission approval, and today’s opening of the E2 Centre allows South Korea to advance its position as a global leader in clean energy. With the support of our partners GS Energy, Doosan, Samsung C&T, and Seoul National University, we are excited to reach this new milestone in our collaboration to advance the shared goal of global decarbonization.”
         Professor Eung Soo Kim is the Head of SNU’s Department of Nuclear Engineering. He said, “The E2 Centre provides our students with an unrivaled opportunity to engage in hands-on SMR operations, cultivating the expertise essential for leading the global clean energy transition. We are proud to be the first institution in Asia to integrate NuScale’s state-of-the-art simulation technology into our curriculum.”
         The first center opened at Oregon State University in November 2020. It was followed by a second center at the University of Idaho at the Center for Advanced Energy Studies in August 2021. The third center is located at Texas A&M’s Engineering Experiment Station. It opened in November of 2021. The fourth center opened in October of 2022 at Idaho State University in Pocatello, Idaho. In May of this year, the first E2 Center outside the U.S. opened at the University of Politehnica of Bucharest, Romania.
         The VOYGR nuclear power plants are based on the NuScale Power Module (NPM). It is a pressurized water reactor with all the components for steam generation and heat exchange incorporated into a single seventy-seven megawatt reactor. NuScale offers a twelve-module VOYGR-12 power plant which is able to generate nine hundred and twenty-four megawatts. It also offers the three hundred and eight megawatt four-module VOYGR-4 as well as the four hundred and sixty-two megawatt VOYGR-6. Other configurations are available based on customer needs.
         Doosan Enerbility was formerly named Doosan Heavy Industries & Construction. In 2019, it signed a business collaboration agreement with NuScale for the supply of NuScale Power Modules and other equipment. Together with Korean financial investors, Doosan has made an equity investment of almost one hundred and four million dollars in NuScale.
         In May of this year, private power generation company GS Energy signed a Memorandum of Understanding (MoU) with Uljin County in North Gyeongsang Province, South Korea. The purpose of the MoU is to consider the use of NuScale Power’s SMR technology to provide heat and power to the planned Uljin Nuclear Hydrogen National Industrial Complex. 
         A pilot six-module plant had been planned to be built near Idaho Falls in the U.S. It was intended for the Utah Associated Municipal Power Systems (UAMPS)-led Carbon Free Power Project. It was expected to be operational by 20320. However, UAMPS and NuScale announced last week that they had mutually agreed to terminate the project.

  • Geiger Readings for November 10, 2023

    Geiger Readings for November 10, 2023

    Ambient office = 109 nanosieverts per hour

    Ambient outside = 97 nanosieverts per hour

    Soil exposed to rain water = 95 nanosieverts per hour

    Garlic bulb from Central Market = 146 nanosieverts per hour

    Tap water = 107 nanosieverts per hour

    Filter water = 595 nanosieverts per hour

  • Nuclear Reactors 1304 – Centrus Is Producing HALEU Fuel For The Department Of Energy

    Nuclear Reactors 1304 – Centrus Is Producing HALEU Fuel For The Department Of Energy

         Centrus Energy Corp. (formerly USEC Inc.) is an American company that supplies nuclear fuel for use in nuclear power plants and works to develop and deploy advanced centrifuge technology to produce enriched uranium for commercial and government uses, including for national security. The American Centrifuge Plant (ACP) in Piketon, Ohio, was constructed by Centrus on the same site as other Centrus facilities. Contracts for delivery of high-assay, low-enriched (HALEU) were signed with the U.S. Department of Energy.
         The ACP has made its first delivery of HALEU to the DoE. This marks the end of the first phase of a cost-share contract that was signed in 2022. The ACP is the first new U.S.-owned uranium enrichment plant using U.S. technology to begin production since 1954. The plant began enrichment operations in October.
         HALEU is uranium enriched between five percent and twenty percent uranium-235. It will be used in the advanced nuclear fuel required for most of the next generation reactor designs that are currently under development. Nine advanced reactor designs have been approved under the Energy Department’s Advanced Reactor Demonstration Program. The DoE has been supporting activities to ensure the availability of the material for those reactors when needed. They also are assisting in the development of a domestic HALEU supply chain.
         Daniel Poneman is the President and CEO of Centrus which owns the ACP. He said, “Centrus is proud to be pioneering American HALEU production, with our first delivery of the fuel that is urgently needed to support the demonstration and commercialization of advanced reactors. This critical milestone is essential to meeting the Department’s near-term HALEU needs, while laying the groundwork for the full restoration of America’s lost domestic uranium enrichment capacity.”
         Construction of the sixteen-centrifuge demonstration cascade plant began in 2019. This work was carried out under a contract with the DoE. The two-phase contract awarded to Centrus last year included cost-shared funding to finish the cascade, complete final regulatory steps, and begin operating the cascade. The goal was to produce up to forty-four pounds of HALEU by the end of this year. The first phase of the contract called for Centrus and the DoE to each contribute about thirty million dollars to the overall cost of sixty million dollars.
         The delivery by Centrus of more than forty-four pounds of HALEU to the DoE means that phase one of the contract has now been completed. Centrus can now move ahead with the second phase which consists of a full year of HALEU production which will produce one thousand nine hundred and eighty-four pounds of nuclear fuel.
         Centrus says that with sufficient funding and offtake commitments, it could expand production. A full-scale cascade of one hundred and twenty centrifuges could be constructed in forty-two months following the securing of funding. It should be able to produce about thirteen thousand two hundred pounds of HALEU per year. More cascades of centrifuges could be added after that. Centrus says that construction and operation of such a plant would support thousands of direct and indirect jobs across a nationwide manufacturing supply chain.