Ambient office  = 108 nanosieverts per hour

Ambient outside = 91 nanosieverts per hour

Soil exposed to rain water = 91 nanosieverts per hour

Crimini mushroom from Central Market = 92 nanosieverts per hour

Tap water = 112 nanosieverts per hour

Filter water = 109 nanosieverts per hour

       One of my early computer consulting jobs was to create an automated system to display the daily location of rail cars carrying pozzolan or fly ash from the burning of coal in Midwestern coal fired power plants. This material was being shipped to the West Coast to be used in the production of cement. Manufacturers are using increasing amounts of this fly ash as an inexpensive binding agent in concrete, wallboard, bricks, roofing and other building materials.
       A recent study of fly ash samples from different coal fired power plants at different locations in China found that some of these samples released forty-three times as much radiation as considered safe under standards created for residential building materials by the United Nations Scientific Committee on the Effects of Atomic Radiation.  Minerals containing uranium are varied and ubiquitous. The highly radioactive fly ash came from areas where the amount of uranium in the coal deposits was unusually high.
        The study was published in the journal Environmental Science and Technology. It was part of a collaboration between CUMT, Duke and Duke Kunshan University. This joint research is dedicated to investigating the environmental impacts of coal and coal ash in China. The research team tested samples from fifty-seven sites in China where there is a lot of uranium in the coal deposits.
        Avner Vengosh is a professor of geochemistry and water quality at Duke University’s Nicholas School of the Environment. He was on the team the conducted the study on Chinese fly ash. He said, “While most coals in China and the U.S. have typically low uranium concentrations, in some areas in China we have identified coals with high uranium content. Combustion of these coals leaves behind the uranium and radium and generates coal ash with very high levels of radiation.”
       Shifeng Dai is a professor of geochemistry at the state key laboratory of coal resources and safe mining at China University of Mining and Technology (CUMT) in Beijing and Xuzhou, China. He was also on the team the conducted the study on Chinese fly ash. He said, “The magnitude of radiation we found in some of the Chinese coal ash far exceeds safe standards for radiation in building materials/ This calls into question the use of coal ash originating from uranium-rich coals for these purposes.”
       Nancy Lauer is a Ph.D. student at Duke’s Nicholas School who led the research for the new study. She said, “By comparing the ratio of uranium in the coal to the radioactivity of the coal ash, we identified a threshold at which uranium content in coal becomes too high to allow coal ash produced from it to be used safely in residential building construction.”
      Ten parts per million of uranium in coal deposits is a threshold limit for commercial use of fly ash that applies to all coal deposits in the world, not just Chinese coal deposits. Lauer said that fly ash from coal deposits with higher levels of uranium “… should not be considered when deciding whether to allow coal ash to be recycled into building materials.”
       Vengosh said, “Since our findings demonstrate that using ash from this high-uranium coal is not suitable in building materials, the challenge becomes, how do we dispose of it in ways that limit any potential water or air contamination. This question requires careful consideration.”

Ambient office  = 96 nanosieverts per hour

Ambient outside = 79 nanosieverts per hour

Soil exposed to rain water = 76 nanosieverts per hour

Beefsteak tomato from Central Market = 88 nanosieverts per hour

Tap water = 105 nanosieverts per hour

Filter water = 100 nanosieverts per hour

       The U.K. Defense Nuclear Safety Regulator (DNSR) has notified the U.K. Ministry of Defense (MoD) of a “failure of safety culture,” “inadequate resourcing” and “continued non-compliance.” The DNSR issued two safety improvement notices to the MoD in 2010, two more in 2016 and one in 2017. These notices claim that there were a series of safety errors at the U.K. facilities for the construction and maintenance of the U.K. fleet of nuclear submarines. These safety notices were revealed last year after the MoD released them in response to a freedom of information request.
       In April of 2010, the DNSR accused the naval base at Devonport in Plymouth of a “failure to reinstate primary systems” following routine submarine maintenance. In May of 2010, the DNSR said that the Nuclear Propulsion Project Team was guilty of “failure to meet good safety management practice.” This failure took place in the construction of new Astute-class reactor-driven submarines. The DNSR notice said, “Inadequate resourcing forms the root cause of failing to address regulatory concerns. DNSR’s concern is that future nuclear reactor program safety may compromised.”
        In September of 2016, the DNSR criticized the Atomic Weapons Establishment at Aldermaston in Berkshire for “continued non-compliance” because they did not provide safety documents that were required. In October of 2016, the DNSR told the Naval Reactor Plant Authorisee that it did not have “an adequate, extant nuclear baseline.” The DNSR notice said, “DNSR considers that the lack of a nuclear baseline and therefore the lack of control of organizational change demonstrates a non-compliance.” 
        In September of 2017, the DNSR sent a safety notice to the Strategic Weapons Project Team at Abbey Wood near Bristol. The DNSR said that the SWPT had failed to meet safety requirements “on organizational capability.” The MoD was instructed to make “adequate arrangements to control any change to its organization structure or resources which may affect safety.”
         Stuart McDonald is a member of the Scottish parliament. He is the defense spokesperson for the Scottish National Party. He said, “The number of safety improvement notices served on the MoD for nuclear safety failures is alarming, and shows a lack of regard for public safety and transparency. It’s appalling that it takes a freedom of information request to uncover this information, which speaks to a wider concern over transparency at the MoD.”
       Mark Ruskell is a member of the Scottish Parliament representing the Green party. He expressed a fear that a “corner cutting culture” was compromising nuclear safety. He said, “Despite the vast sums spent on maintaining these weapons of mass destruction there is clearly a corner cutting culture that has seriously compromised safety standards.”
        The MoD defended its record of compliance with tight safety requirements for dealing with nuclear materials. A spokesperson for the MoD said, “We continue to deliver on our commitment to strengthen the management of all our nuclear programs, ensuring they are managed, advanced and delivered as efficiently and cost-effectively as possible.”
       Over and over again, defense departments of nuclear armed nations fail to rigorously follow regulations for nuclear safety. It appears that they often feel that in the pursuit of nation security, adhering to regulations is optional.

Ambient office  = 113 nanosieverts per hour

Ambient outside = 111 nanosieverts per hour

Soil exposed to rain water = 118 nanosieverts per hour

Yellow bell pepper from Central Market = 91 nanosieverts per hour

Tap water = 108 nanosieverts per hour

Filter water = 95 nanosieverts per hour

Ambient office  = 116 nanosieverts per hour

Ambient outside = 115 nanosieverts per hour

Soil exposed to rain water = 108 nanosieverts per hour

Organic avocado from Central Market = 108 nanosieverts per hour

Tap water = 59 nanosieverts per hour

Filter water = 46 nanosieverts per hour