Shocking plane radiation was measured
on flight from Chile to U.S. rense.com
Radiation fears should not hold back Mars colonization. space.com
Ghana’s nuclear plans are taking shape. topix.com
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.
Latitude 47.704656 Longitude -122.318745
Geiger Counter Readings in Seattle, WA on July 02, 2013
Ambient office = .123 microsieverts per hour
Ambient outside = .102 microsieverts per hour
Soil exposed to rain water = .077 microsieverts per hour
Mango from local produce stand = .120 microsieverts per hour
Tap water = .082 microsieverts per hour
Filtered water = .073 microsieverts per hour
I have already blogged about the issue of the accumulating spent nuclear fuel rods at U.S. reactors. It is estimated that at the current rate, the spent fuel pools at the operating reactors in the U.S. will be full in five years. The old style casks that have been used for the temporary storage of spent fuel at operating reactors have been found to be inadequate. Some are leaking and others may be in the process of building up hydrogen gas which could explode. The new design for spent fuel casks won’t even be tested for four years. With no permanent storage for spent nuclear fuel until 2048 at the earliest, the problem of dealing with spent nuclear fuel is becoming very serious very quickly.
In addition to the problem with spent nuclear fuel at operating reactors sites, there have recently been articles about problems with closed reactors. When a reactor is shut down, everything is disassembled in a process known as decommissioning. This includes the spent fuel pools. Currently, the spent fuel from decommissioned reactors is stored on site in the old style, unsafe dry casks rated for a twenty year lifespan.
When everything at the reactor is decommissioned, this included all the equipment for handling radioactive materials. In order to move the spent fuel to new casks for storage on site or transport, the new casks must be constructed and equipment will have to be brought to the site to handle the spent fuel. This will be an expensive and time consuming process as the old casks continue to deteriorate. Some of the casks contain a newer type of fuel known as high burnup fuel is disintegrating faster than the older type of fuel which will make handling the contents of those casks even more difficult than the casks with the older fuel.
If and when the new casks are constructed and filled with the old fuel, the next problem is what to do with them. Many of the old closed reactors are in highly populated urban areas with dense traffic. Recently the United States Department of Energy was caught using parade permits with lax safety rules to transport radioactive materials from the Hanford Nuclear Reservation through the town of Richland, Washington to a contractor’s facility. Can we trust them to be more conscientious in the transportations of thousands of casks of spent fuel from decommissioned reactors sites?
Since Yucca Mountain was ruled out as a permanent repository, the new plan at DOE is to create several regional repositories. This will be a difficult and time consuming process because any potential site will require extensive evaluation and there will be political resistance to any potential site.
This is a very important topic that must have a full debate in the public arena. As more and more reactors are passing their original intended lifespans, there will be more and more spent fuel that will have to be dealt with. So far all we have are some half formulated possible ways of dealing with this serious situation. Whatever plan is eventually chosen, you can guarantee that the U.S. taxpayer will be expected to shoulder a lot of the burden of cleaning up this nuclear waste nightmare.
Reactor pressure vessel being carted away from closed reactor site:
Geiger Counter Readings in Seattle, WA on July 01, 2013
Ambient office = .117 microsieverts per hour
Ambient outside = .106 microsieverts per hour
Soil exposed to rain water = .121 microsieverts per hour
Mango from local produce stand = .127 microsieverts per hour
Tap water = .135 microsieverts per hour
Filtered water = .121 microsieverts per hour
I have posted a number of articles about the Hanford Nuclear Reservation. The radioactive waste left over from the development of the U.S. nuclear arsenal is still causing a lot of problems. Waste buried in single wall tanks has been leaking into the ground water and the Columbia River. Some waste was moved to double walled tanks which we were assured would not leak but now one of those tanks is leaking. Attempts to build a plant to turn waste into glass logs for disposal has been halted because of design problems. Now comes a report about another way in which radioactivity has been escaping Hanford.
On June 19, 2013, two glove boxes that were used by Hanford workers to handle plutonium were shipped a short distance from the Reservation to Permafix, a private contractor that disassembles material from Hanford and repackages it for disposal. Workers at the contractor detected radiation on the outside of one of the glove boxes. Representative of Permafix said that at no time was there any danger to the workers at their facility or the general public. They said that no radiation escaped from the truck loading bay where the glove boxes were delivered. Permafix reported the incident to the U.S. Department of Energy (DOE) and the Washington State Department of Health (WSDOH as required by regulations.
DOE stated that it was not responsible for radiation found at private contractors and refused to become involved. The Washington State Department of Ecology (WSDOE) said that the case falls under the jurisdiction of the WADOH and they would not get involved. The Department of Health staffers who were dispatched to investigate found that there was radiation where it should not be. They found radiation on the equipment used to unload the glove boxes and on a forklift that was used to move the boxes. They found that the workers handling the glove boxes were not wearing protective gear. WSDOH criticized Permafix for opening Hanford shipping containers outside of their facility and then moving radioactive objects and materials into their facility without “secondary containment.” It is not understood how the radiation escaped from the glove boxes and the plastic wrapping that was applied at Hanford.
Hanford Challenge, the watchdog group who obtained documents about the incident said that there was a threat to the public and the environment and that DOE had to take a more active role in monitoring their contractors. They demanded greater transparency and more stringent control on such shipments and the handling of the material being shipped.
Investigation by King 5 Television in Seattle revealed that the DOE and its contractors were using parade permits to move radioactive shipments through Richmond, Washington. Parade permits have much less stringent requirements for safety measure than other types of transportation permits. It is obviously improper to move such shipment with parade permits and it is not clear how that was authorized and justified by DOE.
Richland, Washington near the Hanford Nuclear Reservation:
New Godzilla movie being shot in Japan is related to the recent Fukushima disaster. yvrshoots.com
On Thursday, a group of senators introduced a bill, the Nuclear Waste Administration Act, that would establish such a process, based in part on public comments solicited online by the bill’s sponsors. thecaucus.blogs.nytimes.com
Geiger Counter Readings in Seattle, WA on June 30, 2013
Ambient office = .114 microsieverts per hour
Ambient outside = .103 microsieverts per hour
Soil exposed to rain water = .107 microsieverts per hour
Whtie Peach from Costco = .102 microsieverts per hour
Tap water = .124 microsieverts per hour
Filtered water = .106 microsieverts per hour
I have posted a lot of articles about nuclear weapons. Most of these have focused on high-tech atomic and hydrogen bombs built by nation states with huge investments of manpower and equipment. These do constitute the greatest threat to the future of humanity. However, there is another type of bomb that utilizes nuclear materials known as a “dirty bomb.” This is a low tech device which does not result in a nuclear or thermonuclear explosion. Conventional explosives are combined with a radioactive material and the explosion results in spreading the radioactive material over a wide area rendering it dangerous for human occupation. Even if all the nations get rid of all their nuclear weapons, the world is still under threat from non-state actors creating and using dirty bombs for purposes of terrorism.
There are many possible sources for radioactive materials that might be used in dirty bombs. Radioactive materials can be found in smoke alarms, various kinds of industrial sensors, medical equipment, etc. One of the greatest concerns is that radioactive materials created for use in nuclear reactors or for the creations of nuclear weapons might be stolen from their manfucturers. Control of such nuclear materials is very strick but the break up of the Soviet Union created opportunities for the loss of such materials. A great deal of the current enforcement efforts for control of nuclear materials is concentrated on highly refined and concentrated uranium or plutonium. There is a small risk that an unauthroized group with sufficient funding, facilities and expertise could construct a workable atomic bomb. The most likely scenario is that some group will make a dirty bomb.
The International Atomic Energy Agency of the United Nations is going to host a meeting in Vienna next week for representatives of over a hundred nations to discuss this problem.The IAEA maintains a Tracking Database for incidents involving unathorized access to, theft of, illegal transfers of or sabotage with nuclear materials. Between one hundred and fifty and two hundred incidents are reported to the IAEA each year. Most of these are not major security risks there are some reported incidents that involve uranium or plutonium. Some smugglers have become more sophiticated and are using shielded containers to try to avoid detection. Fortunately, the quantities of uranium and plutonium involved are grams and not kilograms. They would be sufficient for the creation of a dirty bomb but not an actual atomic bomb.
There are other possible ways of spreading nuclear materials that do not involve explosives. One such method would involve grinding up a few grams of plutonium, mixing it with gasoline and then driving around a city. The radioactivity in the exhaust from the vehicle would settle over the driving area and pose a threat to human health. Most likely, there would be no effective way to clean up the radiation and the city would have to be abandoned. While terrorists do like to have spectacular events to generate terror, the possibility of less dramatic methods of nuclear dispersal definitely exist.
Work to remove melted fuel from the three crippled reactors at Tokyo Electric Power Co.’s Fukushima No. 1 nuclear plant could start in 2020. japantimes.co.jp
Two Pacific Northwest National Laboratory employees inhaled small amounts of radioactive tritium while doing work in the Hanford 300 Area last month. bellinghamherald.com