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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Example Q&A with the Artificial Burt Webb
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.
There has been publicity lately touting the promise of small modular reactors (SMR). As defined by the International Atomic Energy Agency, a “small modular reactor” is a nuclear reactor with an output of less than three hundred megawatts. However, in the general usage of term, any reactor with an output of less than five hundred megawatts is considered to be a small reactor. The current discussion of SMRs refers to reactors that are built in a factory and transported to the site where they will operate. In addition to reducing on-site construction, these SMRs are intended to be more efficient in containment and more secure for nuclear materials.
While the positive attributes of SMRs are attractive, there are also a number of negatives. As with any new reactor design, a great of work, time and money will have to be spent to build and test SMRs before any could be licensed. The big question is whether it will be cheaper and safer to build two SMRs to generate a gigawatt as opposed to building one conventional reactor to generate that same gigawatt. There is also a concern that if there is a problem in the design of the reactors or in the production line in the factory, every SMR produced will have that same problem. There is a lot of money being dedicated to SMR research but some companies have decided that SMRs are not a good bet.
Babcock & Wilcox has a SMR design called “mPower.” They signed a five year agreement with the U.S. Department of Energy (DoE) for cost matching of one hundred fifty million dollars a year to develop their mPower design with the Tennessee Valley Authority (TVA) as the first customer. They hoped to see the construction of the first unit by 2022. They expected to be able to sign up other customers and to obtain major investment capital for the project.
Now, one year after the contracts were signed, B & W have not been able to find any new customers or to obtain any major investors. As a result, B & W has decided to reduce spending on mPower from one hundred fifty million dollars to a maximum of fifteen million dollars per year. B & W is currently renegotiating the contracts with DoE and the TVA in hopes of finding a way to restructure and continue the program.
The DoE has a four hundred and fifty million dollar commitment to the development of SMRs. mPower was one of two projects that the DoE is been involved in. The other project is based on the “NuScale” design for a forty five megawatt SMR. Westinghouse lost out in the competition for DoE collaboration and is scaling back its work on a two hundred twenty megawatt SMR design.
There are currently SMR development projects in other countries. Argentina is working on their twenty seven megawatt CAREM SMR design in Atucha. China is working on two one hundred and five megawatt HTR SMRs at Shidaowan. Russia is developing two thirty five megawatt KLT-40S SMRs which they intend to install on a barge to create the Akademik Lomonosov floating power plant that can be towed to where ever it is needed.
While these projects are interesting, SMRs are too little and too late to make much of an impact on the global nuclear industry.
Babcock & Wilcox diagram of the mPower Small Modular Reactor:
The Global Threat Reduction Initiative (GTRI) is a program of the National Nuclear Security Administration under the U.S. Department of Energy (DoE). Its mission is to “reduce and protect vulnerable nuclear and radiological material located at civilian sites worldwide.” The GTRI have been very successful to date. There are three programs that are being carried out by the GTRI.
The GTRI Convert program is dedicated to converting about two hundred research reactors and isotope production facilities around the globe from the use of highly enriched uranium (HEU) for fuel and targets to low enriched uranium for fuel and targets. This will help reduce nuclear threats because weapon-grade HEU will no longer be needed in these reactors and production facilities.
The GTRI Nuclear and Radiological Materials Removal Program removes and/or disposes of weapons grade uranium and other radiological materials. The removal and conversion of nuclear materials from Russian warheads, U.S. warheads, and other civilian sources of radiological materials is an ongoing part of this program. This will help reduce nuclear threats because weapon-grade nuclear materials will no longer be available to terrorists.
The GTRI Nuclear and Radiological Materials Protection program is intended to protect at-risk nuclear and radiological materials worldwide from threats of theft and sabotage until these materials can be secured by a more permanent security program. This reduces the nuclear threat by making these material more difficult, if not impossible, to obtain.
The U.S. DoE has releases a budget proposal for 2015 which would push the target date for the reactor conversion project from 2030 to 2035. The budget for the GTRI programs would be cut by about eighteen percent. At the same time, the Obama Administration is asking for an increase in funding for nuclear weapons research and production by seven percent. The U.S. DoE is also delaying the implementation of security measures for non-military sites in the U.S. that possess nuclear and/or radiological materials. The original completion date for this project was 2044 but the U.S. DoE has changed that to TBD.
Senator Dianne Feinstein (D-Calif.) attacked the plans to underfund and delay the GTRI programs while speaking at a Senate Appropriations Energy and Water Development Subcommittee hearing recently. She said, “This simply is unacceptable at the same time we’re pouring money into the modernization of certain warheads. It’s just unacceptable.” She was especially concerned about the slowdown in providing protection for the nuclear and radiological materials at non-military sites that would be a tempting target for terrorists bent on building a “dirty bomb.” She asked, “Are terrorists no longer interested in acquiring nuclear or radiological bombs for improvised nuclear devices and dirty bombs? I don’t understand how you can defend this budget on nonproliferation cuts.”
The U.S. Energy Secretary, Ernst Moniz defended the program cuts saying that they were unavoidable with the very tight budget situation forcing “tough choices.” He also defended the Obama Administration’s record of international nuclear threat reduction.
Experts say that nuclear chain reactions may have lasted over 7 months at Fukushima after the tsunami. enenews.com
There are reports that people are dying suddenly in Fukushima. enenews.com
After a long impasse, Russia and India have reached an agreement for the construction of units 3 and 4 at the Kudankulam nuclear plant. nuclearstreet.com
Unit 1 at Arizona’s Palo Verde nuclear plant retroactively declared an unusual event Thursday stemming from a hydraulic line problem in November. nuclearstreet.com
U.S.N. Reagan aircraft carrier crew took massive radiation hits from Fukushima and dozens have cancer. enenews.com
TEPCO is not going to analyze plutonium or uranium in bypass water from Fukushima site before discharging it into the Pacific. fukushima-diary.com
Two nuclear plants reported unplanned reactor shutdowns Tuesday after water level irregularities in steam generators. nuclearstreet.com
