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.

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  • Nuclear Weapons 880 – Tensions Rise Between Pakistan and India Over Kashmir

    Nuclear Weapons 880 – Tensions Rise Between Pakistan and India Over Kashmir

    Javed Ashraf Qazi is the former Director General of Pakistan’s Inter-Services Intelligence (ISI) and Military Intelligence, and a former senator during the Musharraf administration. He voiced grave concern over the rapidly deteriorating relationship between India and Pakistan, especially in the aftermath of the deadly attack on Hindu pilgrims in Kashmir.

    Qazi warned that the ongoing increase of hostility between the two nuclear-armed neighbors risks triggering a catastrophic conflict. He stated, “India had been threatening Pakistan with unrest in Baluchistan. After a train was hijacked in Baluchistan, it was confirmed that Baluch insurgents had been funded and instigated by India.”.

    He further noted that Pakistan had long been dealing with cross-border terrorism, particularly through Afghanistan. “We have been constantly facing the Taliban terrorists hitting our civilian population.”. Qazi pointing to a pattern of sustained external aggression.

    He continued that the relations between the two countries had significantly worsened following India’s unilateral move to absorb Kashmir into its territory, in defiance of UN resolutions. He emphasized, “Kashmiris have been fighting India for the last twenty years. There have been killings on both sides. India blames Pakistan for supporting the Kashmiri population, which is a Muslim-majority state forcibly absorbed by India.”.

    Qazi pointed out that many small groups of Kashmiris continue to resist Indian forces, fighting them in forests and mountains. Referring to the April 22nd attack in Pahalgam, he said, “A small group of five or six Kashmiris attacked passengers of a bus carrying Hindu pilgrims to a shrine. Reportedly, 26 Hindu passengers and two Muslim drivers were killed.”. He said that within minutes of the incident in Kashmir, India had blamed Pakistan and vowed retaliation.

    He had serious concerns over India’s immediate military response, “Pakistan’s river water was threatened to be blocked despite an international treaty. Indian forces have taken an offensive posture. Their Air Force is flying round-the-clock over the border.”.

    Qazi lamented the lack of serious dialogue between the two sides. “Pakistan has asked for proof, even just one terrorist shown to the media — but India has shut the border crossings and ordered all Pakistanis in India to leave. They are preparing to attack and refusing to talk.”.

    Highlighting the nuclear dimension of the conflict, the former ISI chief warned, “Both countries are nuclear weapon states. A war could lead to nuclear devastation — not just of our two nations, but of the entire region. The nuclear cloud can spread beyond hundreds of miles. In Japan, only two bombs were dropped and the consequences are visible even today. India and Pakistan have more than 170 bombs each. It is horrible to imagine a war with such an arsenal.”.

    Qazi believes that India is using the current situation in Kashmir to assert itself as a regional hegemon. He also said that the global community cannot remain a bystander. “This incident of Pahalgam — 26 tourist killings — pales when compared to the ongoing Muslim killings in India over the past many years,” he said. “The UN Security Council must take immediate notice and defuse the situation before it leads to a nuclear winter. Time is running out.”.

    Kashmir

     

  • Geiger Readings for May 02, 2025

    Latitude 47.704656 Longitude -122.318745

    Ambient office = 120 nanosieverts per hour

    Ambient outside = 54 nanosieverts per hour

    Soil exposed to rain water = 55 nanosieverts per hour

    Red bell pepper from Central Market = 73 nanosieverts per hour

    Tap water = 103 nanosieverts per hour

    Filter water = 92 nanosieverts per hour

  • Nuclear Reactors 1507 – Candu Energy Selects Doosan Enerbility as a Preferred Vendor

    Nuclear Reactors 1507 – Candu Energy Selects Doosan Enerbility as a Preferred Vendor

    Canada’s Candu Energy has just signed a preferred vendor agreement with South Korea’s Doosan Enerbility. This agreement will allow it to pursue collaboration on nuclear power projects worldwide, including the upgrading of Candu reactors and nuclear new-build projects.

    According to Doosan Enerbility, it was selected by Candu Energy following the shortlisting of nine companies from about two thousand vendors for the role of preferred vendor. The preferred vendor agreement was signed in Seoul on the 29th of April of this year.

    Doosan Enerbility said, “Upon signing this agreement, Doosan Enerbility will now be able to expand its participation in global nuclear projects, as it will have the chance to engage in the design, manufacturing, installation, commissioning and operation processes of global nuclear power plant projects being conducted by Candu Energy.”.

    Gary Rose is the Candu Energy President. He said, “The Candu technology has already been successfully rolled out to four continents of the world and been proven to be a product of the highest reliability. As we endeavor to strengthen our supplier capabilities for Candu’s global projects, including those in the Asian region, we are delighted to have Doosan Enerbility come on board as one of our global supply chain partners.”.

    Jongdoo Kim is the CEO of Doosan Enerbility’s Nuclear Business Group. He added, “Doosan Enerbility is the first-ever non-Canadian company to be selected as a preferred vendor, which is essentially a verification of the Korean nuclear industry’s competitiveness in the global market. With the signing of this agreement, we aim to participate in not only Candu Energy’s heavy water reactor facility upgrade projects, but also in nuclear new-build projects.”.

    In 2024, Candu Energy placed orders with Doosan Enerbility to supply feeder pipes for use in the refurbishment of Unit 1 at the Cernavoda nuclear power plant in Romania and for the four Candu reactors at Canada’s Pickering B plant.

    Earlier this month, Candu Energy finalized preferred vendor agreements with eight Canadian companies for the refurbishment and construction of Candu reactors. Agreements were signed with BC Instruments, BWXT, Celeros, ES Fox, Niagara Energy, NWI Precision, Senior Flexonics and Velan. Candu Energy said that these companies would benefit from preferential access to key contracts and will play a critical role in the deployment of new Candu reactors in Canada and abroad.

    There are currently thirty-one Candu reactors in operation around the world, including in Canada, South Korea, Romania, China and Argentina. Candu units are pressurized heavy water reactors designed to operate for thirty years, with a further thirty years available subject to refurbishment. This process includes the replacement of key reactor components such as steam generators, pressure tubes, calandria tubes and feeder tubes. It involves removing all the reactor’s nuclear fuel and heavy water and isolating it from the rest of the power station before it is dismantled. Thousands of components, including those that are not accessible when the reactor is assembled, are inspected. All four hundred fuel channels and nine hundred and sixty feeder tubes are replaced during the high-precision rebuild.

    AtkinsRéalis is the parent company of Candu Energy. It unveiled plans for the one-thousand-megawatt Candu Monark, a Generation III+ reactor with the highest output of any Candu technology, in November of 2023. AtkinsRéalis completed the conceptual design phase in September of 2024 and is in the planning stage of a vendor design review with the Canadian nuclear regulator.

    Candu Energy

     

  • Geiger Readings for May 01, 2025

    Latitude 47.704656 Longitude -122.318745

    Ambient office = 119 nanosieverts per hour

    Ambient outside = 65 nanosieverts per hour

    Soil exposed to rain water = 66 nanosieverts per hour

    English cucumber from Central Market = 133 nanosieverts per hour

    Tap water = 74 nanosieverts per hour

    Filter water = 64 nanosieverts per hour

  • Nuclear Reactors 1506 – BRICS Holds First Session of Nuclear Energy Platform Program

    Nuclear Reactors 1506 – BRICS Holds First Session of Nuclear Energy Platform Program

    BRICS is an intergovernmental organization comprising ten countries including Brazil, Russia, India, China, South Africa, Egypt, Ethiopia, Indonesia, Iran and the United Arab Emirates. The first expert session within the framework of the BRICS Nuclear Energy Platform (NEP) has just been held in China. Leading experts discussed the best practices for implementing modern solutions in the energy sector.

    The BRICS NEP was created in October of 2024 and is intended to share experience and support for the development of nuclear technologies among BRICS member countries. One of the platform’s goals is to help companies with persuading their governments to see nuclear power as a clean energy source, and also share assistance for dealing with other issues which may be impeding nuclear energy projects.

    Held on the sidelines of the 16th China International Exhibition on Nuclear Power Industry in Beijing on the 27th of April, the first expert session was held within the framework of the BRICS Nuclear Energy Platform.

    The theme of the event was ‘Key factors influencing the development of nuclear energy’. It was organized with the support of Rosatom, the Russian state nuclear corporation. The event brought together representatives of government agencies and specialized organizations of the BRICS countries and partner countries of the association, as well as representatives from the ASEAN Energy Center and World Nuclear Association.

    The discussions focused on new approaches to the efficient distribution of nuclear power resources, current industry trends and prospects for cooperation between participating countries for balanced global development and energy security.

    The opening speech was given by the Platform’s Chief Coordinator Elsie Pule of South Africa and Celso Cunha, president of the Brazilian Association for the Development of the Nuclear Industry. Rosatom said that for representatives of countries new to the nuclear power industry, the session “became an opportunity to adopt best practices in the energy and non-energy application of nuclear developments to address environmental and social challenges facing society”.

    Chen Xin is deputy director of the Uranium Resources Department of China’s State Nuclear Uranium Resource Development Company. He said, “Young specialists in the nuclear industry need the help of experienced experts from countries with advanced technologies. The session provided an opportunity for representatives of nuclear organizations of the BRICS countries to establish interaction for the implementation of joint projects.”

    Artem Goncharuk is the director general of Rosatom East Asia. He added, “The session once again confirmed the existence of a large and as yet untapped potential for joint work between BRICS organizations and partners. We will continue to move forward and will ‘take a step, leaving a mark’. Work on preparations for the next expert session has already begun.”

    During 2025, the Platform plans to hold special expert-level events at major nuclear industry venues. The next Platform session is due to be held on the 21st of May on the sidelines of the Nuclear Trade & Technology Exchange conference and exhibition in Brazil.

    More than twenty other countries are expressing an interest in joining the organization which is widely seen as a counterbalance to the G7 grouping of industrialized nations.

    BRICS member countries currently have about three hundred and ninety gigawatts of operable nuclear power units with a further sixty megawatts under construction.

    BRICS

  • Geiger Readings for Apr 30, 2025

    Latitude 47.704656 Longitude -122.318745

    Ambient office = 110 nanosieverts per hour

    Ambient outside = 66 nanosieverts per hour

    Soil exposed to rain water = 69 nanosieverts per hour

    Campari tomato from Central Market = 122 nanosieverts per hour

    Tap water = 69 nanosieverts per hour

    Filter water = 60 nanosieverts per hour

  • Nuclear Reactors 1505 – Blykalla and Norway’s Institute of Energy Technology Enter Agreement to Collaborate on the SEALER Lead-Cooled SMR

    Nuclear Reactors 1505 – Blykalla and Norway’s Institute of Energy Technology Enter Agreement to Collaborate on the SEALER Lead-Cooled SMR

    Swedish lead-cooled small modular reactor technology developer Blykalla and Norway’s Institute of Energy Technology (IFE) are forming a strategic collaboration to accelerate the technical development of Blykalla’s SEALER reactor.

    Blykalla was formerly called LeadCold. It is a spin-off from the KTH Royal Institute of Technology in Stockholm. Lead-cooled reactor systems have been under development at the Institute since 1996. The company was founded in 2013 as a joint stock company. It is developing the SEALER (Swedish Advanced Lead Reactor) lead-cooled SMR.

    Blykalla said that the new collaboration with the IFE focuses on a number of critical areas that are essential for scaling SEALER from prototype to full commercial readiness. These areas include the development of control room and operator environments, as well as the design of instrumentation and control systems to allow remote and autonomous operation. The IFE will also contribute to the development of core mechanical components, such as shutdown assemblies and fuel handling systems, and it will support the design of radiation shielding to meet rigorous regulatory requirements.

    Prototype development and component testing will be a central part of the work. It will help mature instrumentation of core, primary system and auxiliary systems, and reduce the technical risks associated with licensing and deployment. Together, Blykalla and IFE intend to speed up the transition from low technological readiness levels to the industrial standards needed for commercial rollout.

    Blykalla said initial joint development will take place in Sweden and Norway. Further phases align with SEALER’s licensing and industrialization timeline.

    Jacob Stedman is the CEO of Blykalla. He said, “We’re proud to work with the renowned research institute IFE. Strengthening Scandinavian collaboration feels both vital and natural at a time when technological sovereignty is becoming central to industrial growth and long-term sustainability. Partnerships between leading actors can make all the difference in bringing new technologies to market and securing a clean energy future for our region.”

    Bjørn Axel Gran is the vice president at IFE Nuclear. He added, “We’re pleased that our competence and expertise will be used in the next stage of the nuclear area. Partnership with Blykalla allows them to take research into innovation and allows us to get first-hand learning of future research gaps.”

    Blykalla plans to construct its first reactor called SEALER-One, in Sweden. The prototype will function as a demonstration of its technology. At the same time, it will be used for pyrolysis, whereby industrial customers can utilize its steam for, among other things, decarbonized biochar production. The company aims to make SEALER-One operational by 2029. Blykalla has signed a Letter of Intent with nuclear operator Studsvik to develop SEALER-One on its site in Nyköping, Sweden. Work to license the reactor is currently under way.

    In the long-term, Blykalla plans to deploy up to one thousand SMRs by 2050, delivering five hundred terawatts of clean energy annually to industrial users that cannot rely on intermittent power sources. It states that SEALER is designed to serve sectors such as hydrogen production, process heat, and pyrolysis. It has the potential to significantly reduce global carbon dioxide emissions and secure industrial resilience and growth.

    In February of this year, Blykalla and Norwegian nuclear project developer Norsk Kjernekraft signed a Memorandum of Understanding (MoU) to collaborate on the deployment of SEALER in Scandinavia. Under the MoU, the two companies will assess the business case for integrating the SEALER into power plant projects that are currently under development by Norsk Kjernekraft, evaluating site suitability, regulatory pathways, and economic feasibility for deployment in Norway. The agreement also covers the collaboration on licensing, financing, construction, and operational aspects of SEALER-One in Sweden.

    Blykalla