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 Mar 17, 2023

    Geiger Readings for Mar 17, 2023

    Ambient office = 127 nanosieverts per hour

    Ambient outside = 116 nanosieverts per hour

    Soil exposed to rain water = 110 nanosieverts per hour

    English cucumber from Central Market = 94 nanosieverts per hour

    Tap water = 77 nanosieverts per hour

    Filter water = 61 nanosieverts per hour

  • Radioactive Waste 896 – Xcel Energy Cleaning Up Leak At Its Monticello Nuclear Power Plant

    Radioactive Waste 896 – Xcel Energy Cleaning Up Leak At Its Monticello Nuclear Power Plant

         Xcel Energy Inc. is a U.S. regulated electric utility and natural gas delivery company based in Minneapolis, Minnesota, serving more than three million seven hundred thousand electric customers and two million natural gas customers across parts of eight states (Colorado, Minnesota, Wisconsin, Michigan, North Dakota, South Dakota, Texas and New Mexico).
        Xcel owns and operates the Monticello nuclear power plant in Monticello, Minnesota. The site, which began operating in 1971, has a single nuclear reactor (boiling water reactor) of the General Electric BWR-3 design generating 613 megawatts,
         Xcel Energy has reported that about four hundred thousand gallons of water which contains radioactive tritium leaked from a water pipe running between two building at its Monticello facility. Xcel said it is monitoring groundwater from two dozen wells in the area.
         Tritium is a radioactive form of hydrogen with two neutrons in the nucleus. It is a byproduct of producing electricity at nuclear power plants, according to the Minnesota Pollution Control Agency (MPCA).
         Kirk Koudelka is a MPCA assistant commissioner for land and strategic initiatives. He said, “Our top priority is protecting residents and the environment, and the MPCA is working closely with other state agencies to oversee Xcel Energy’s monitoring data and cleanup activities. We are working to ensure this cleanup is concluded as thoroughly as possible with minimal or no risk to drinking water supplies.”
         When the leak was detected, the facility diverted water to an in-plant water treatment system to contain it and prevent additional water from leaving the plant. The MPCAS added that the leak has stopped. The contaminated water has not reached the Mississippi or contaminated drinking water sources.
          The MPCA said in a press release on Thursday that “There is no evidence at this time to indicate a risk to any drinking water wells in the vicinity of the plant.”
         Xcel Energy said that it completed a thorough inspection of all piping at the plant. It determined that no other areas of the facility are of concern. It will also be examining the pipe that leaked in the laboratory to determine why it happened.
         The contaminated water is contained in the grounds of the plant. It has not been detected beyond the facility or any local drinking water. Xcel is continuing to monitor groundwater from over two dozen wells on-site.
         An estimated twenty five percent of the leaked tritium water has been recovered. More of the water will be recovered over the course of next year. Xcel is considering options to store the recovered contaminated water. They are considering building above-ground storage tanks or a retention pool. Any new construction will be reviewed by the state agencies.
         Chris Clark is the President of Xcel Energy–Minnesota, North Dakota and South Dakota. He said in a statement, “We have taken comprehensive measures to address this situation on-site at the plant. While this leak does not pose a risk to the public or the environment, we take this very seriously and are working to safely address the situation.”
          The MPCA is monitoring Xcel’s process of cleaning up the leak in coordination with the Minnesota Department of Health, and the Minnesota Department of Natural Resources.

  • Geiger Readings for Mar 16, 2023

    Geiger Readings for Mar 16, 2023

    Ambient office = 131 nanosieverts per hour

    Ambient outside = 98 nanosieverts per hour

    Soil exposed to rain water = 95 nanosieverts per hour

    Corn from Central Market = 70 nanosieverts per hour

    Tap water = 103 nanosieverts per hour

    Filter water = 88 nanosieverts per hour

  • Nuclear Reactors 1193 – NB Power Working Thru Procedures To License A Small Modular Reactor For New Brunswick

    Nuclear Reactors 1193 – NB Power Working Thru Procedures To License A Small Modular Reactor For New Brunswick

         New Brunswick (NB) Power in Canada will soon apply to the Canadian Nuclear Safety Commission (CNSC) in preparation for small modular reactors (SMR) at the Point Lepreau Nuclear Generating Station in Charlotte County.
         Heather McKnight is an engineer with NB Power. She said that the provincial utility is currently in the “pre-project” phase. It will soon be submitting a license to prepare to the CNSC. This is the first step in a three-step process to bring generation-four SMRs to the Canadian province. She went on to say to the Saint Andrews town council that “It will prepare the site for construction that will begin years down the road.”  She added that it will run in conjunction with environmental assessments.
         NB power hopes to submit the license to prepare by the end of June. The license will be the official start for the project which could see New Brunswick become the first province to generate electricity via a generation-four reactor that is more advanced than the current widely used CANDU reactor technology.
         ARC Clean Energy Canada is committed to a 2029 launch date for its SMR at the Point Lepreau facility.  Moltex Energy is also planning to deploy its SMR at Point Lepreau facility within a similar time frame.
          McKnight said that as a scale of reference for comparison, each of these SMRs will be approximately half the size of the Costco warehouse on Saint John’s east side. She added that there is potential to add more nuclear reactors in northern New Brunswick. She said, “These reactors aren’t just targeted for power production.” They can also be used to provide steam heating for industrial purposes.
         NB Power is currently mandated to provide four gigawatts of power at any given time. Currently about half of that power comes from “clean” sources, including hydro, nuclear, wind, solar and biomass. Additional energy is imported from Quebec and New England. The other half of the power is currently supplied by Belledune’s coal plant, the Coleson Cove generator in Lorneville, Millbank in Miramichi, and the Bayside generator. The last three generators run off natural gas or oil.
         New Brunswick, Saskatchewan, Ontario and Alberta have signed a memorandum of understanding (MoU) committing them to SMR development. Don Morgan is Saskatchewan’s Minister of Crown Investment Corporations and minister responsible for SaskPower. SaskPower is the principal electric utility in Saskatchewan, Canada. Established in 1929 by the provincial government, it serves more than 538,000 customers and manages over $11.8 billion in assets. Morgan toured Point Lepreau last summer. He said that his prairie province was locking east for inspiration on how to develop nuclear energy.
         In 2021, the federal government passed the Canadian Net-Zero Emissions Accountability Act. This legislation outlines the country’s commitment to net-zero emission by 2050. Net-zero can be achieved by both reducing energy emissions and offsetting any carbon emissions by purchasing renewable energy credits (RECs). These are used to procure renewable energy sources.
         SNC Lavalin’s Net Zero 2050 report includes oil and gas use decreasing by thirty percent. This was done in part due to SMRs replacing fossil fuels.

  • Geiger Readings for Mar 15, 2023

    Geiger Readings for Mar 15, 2023

    Ambient office = 92 nanosieverts per hour

    Ambient outside = 106 nanosieverts per hour

    Soil exposed to rain water = 106 nanosieverts per hour

    Blueberry from Central Market = 90 nanosieverts per hour

    Tap water = 106 nanosieverts per hour

    Filter water = 83 nanosieverts per hour

  • Nuclear Reactors 1192 – Dual Fluid And TRIUMF Are Collaborating On A Lead-cooled Small Modular Reactor

    Nuclear Reactors 1192 – Dual Fluid And TRIUMF Are Collaborating On A Lead-cooled Small Modular Reactor

         Canadian-German nuclear technology company Dual Fluid Energy Inc. has just signed a memorandum of understanding (MoU) with Canadian research center Tri-University Meson Facility (TRIUMF) at the University of British Columbia to advance development of a small modular reactor based on Dual Fluid Energy technology. Dual Fluid Energy said, “The goal of the new reactor concept is to use processed nuclear waste as fuel, and to exponentially increase the performance of today’s nuclear power production technologies.”
         As part of the MoU, Dual Fluid Energy and TRIUMF will focus on materials research to address several challenges inherent to nuclear power. These include the identification of materials that can withstand the high demands in the reactor core, which operates at temperatures in excess of eighteen hundred degrees Fahrenheit and produces highly radioactive and corrosive conditions.
         This research will leverage TRIUMF’s materials irradiation facilities which are known as the Proton and Neutron Irradiation Facilities and their metallurgical testing capabilities. Collaboration is also planned for detector development and reactor core imaging.
         TRIUMP is located in Vancouver, British Columbia. It is a national center owned and operated as a joint venture by a consortium of universities. They also receive funding from the National Research Council of Canada.
          Ahmed Hussein is the chief research officer at Dual Fluid Energy. He said, “The collaboration with TRIUMF is a major milestone for us, as the planned material testing is crucial for further development. Given TRIUMF’s expertise, we cannot imagine a better partner.”
         Kathryn Hayashi is the chief executive officer of TRIUMF innovations which is the commercialization arm of TRIUMF. She said, “TRIUMF is very pleased to be engaging with Dual Fluid on this exciting project. The world is looking increasingly to nuclear power as a major opportunity for energy generation, and TRIUMF is uniquely poised to advance these technologies through materials characterization at our leading-edge facilities and with support from our wide-reaching international network of subatomic physics research expertise. Our agreement with Dual Fluid also spotlights the strategic advantages that TRIUMF can enable for scientific collaborations between Canada and countries around the world.”
         Dual Fluid Energy’s compact reactor design features two loops consisting of a fuel loop and a coolant loop. The reactor uses a liquid fuel comprising thorium, natural uranium and processed nuclear waste. Liquid lead is used as a coolant. The reactor is designed to operate with a fuel change interval of about twenty-five years. It can be used to generate electricity and/or heat for the production of hydrogen. The company says that the operating temperature of eighteen hundred degrees Fahrenheit allows new heat applications. The reactor comes in two sizes. The DF300 will have a capacity of three hundred megawatts and the DF1500 has a capacity of fifteen hundred megawatts.
         Dual Fluid Energy Inc. was incorporated as a public company in Vancouver, Canada in January of 2021 to bring Dual Fluid Energy technology to serial production status. Construction of a prototype of a Dual Fluid Energy reactor is scheduled to begin in this decade. Serial production will begin around 2034.