Detection in Muncie, Indiana, of the Fukushima Nuclear Reactor Releases Following the Japanese Earthquake"
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1 Detection in Muncie, Indiana, of the Fukushima Nuclear Reactor Releases Following the Japanese Earthquake" Juan Carlos Ramirez-Dorronsoro, Department of Natural Resources and Environmental Management, David Grosnick, Saiful Islam, and David Ober Department of Physics and Astronomy Ball State University
2 Outline 1. Introduction Japan s March 11, 2011, Earthquake and Tsunami 2. EPA's RadNet Monitoring Data Following the Cloud 3. Experimental Details of Sampling, Measurements, and Results from Muncie and Indianapolis 4. Comparisons of Releases from Fukushima and Chernobyl (1986) 5. Suggested Vocabulary and Topics in Environmental, Medical Physics, and Applied Nuclear Physics for an Informed Citizenry
3 March 11, 2011, the most powerful earthquake to hit Japan (9.0 earthquake off the coast of Japan) created a tsunami; earthquake and tsunami caused the loss of power to electric generators at the Fukushima nuclear power plants and releases of radiation.
4 EPA's RadNet Real-time Monitoring Data (Beta and Gamma Radiation) Beta Radiation
5 To-date, levels recorded at this monitor have been thousands of times below any conservative level of concern. The beta gross count rate measures the radiation from all radionuclides that emit beta particles, which is indicated by the term gross or total. The term count rate tells us how quickly beta particles are being detected, which indicates how much radioactivity the monitor is seeing.
6 Gamma-Radiation ROI Ranges To-date, levels recorded at this monitor have been thousands of times below any conservative level of concern. The gamma data measures radiation from all radionuclides that emit gamma rays and splits them into ranges of energy. The word gross, or total, indicates that the measurement is from all gamma emitting radionuclides. Not all gamma rays have the same amount of energy. Breaking the data into discrete energy ranges helps scientists to determine which radionuclides may be present. ROI Energy Range MeV
7
8 I-131 Concentrations - pci/meter cubed 3 pci/meter 3 Radiation Detected in Dutch Harbor, Alaska, within 9 days Dutch Harbor, AK, Air Cartridge Concentrations of I-131 following Fukushima Reactor Releases Dutch Harbor, AK Air Filter /18/2011 3/23/2011 3/28/2011 4/2/2011 Date
9 I-131 Concentrations - pci/meter cubed 1.5 pci/meter 3 Maximum Radiation Detected in Nome, Alaska, in 13 days Nome, AK, Air Cartridge Concentrations of I-131 following Fukushima Reactor Releases Nome, AK Air Filter /18/20113/23/20113/28/2011 4/2/2011 4/7/2011 Date
10 I-131 Concentrations - pci/meter cubed < 0.5 pci/meter 3 Maximum Radiation Detected in Juneau, Alaska, in 15 days Juneau, AK, Air Cartridge Concentrations I-131 following Fukushima Reactor Releases Juneau, AK Air Filter /18/20113/23/20113/28/2011 4/2/2011 4/7/2011 Date
11 Maximum (EPA) concentration levels and dates for selected locations following March 11 earthquake Peak Radiation Level pci/meter 3 City State Date Cartridge Filter Dutch Harbor AK 20-Mar Nome AK 24-Mar Juneau AK 26-Mar Anaheim CA 21-Mar San Bernardino CA 22-Mar Las Vegas NV 21-Mar Boise ID 24-Mar Montgomery AL 24-Mar
12 Ball State University s High Volume Air Samplers Used in This Investigation
13 24-hr Sampling Periods, 8 x 10 Filters, and 40 ft 3 /min Flow Rate
14 Gamma-Rays of Radioactive Isotopes Collected on Filters Analyzed with High-Resolution Ge Detector
15 Gamma-Ray Spectra: Know your background and know what you expect/hope to find
16 Counts/24 hrs Filter Gamma-Ray Spectrum - March 31, 2011 Air Sampler Time 24 hrs - Count Time 24.5 hrs Counts/24 hrs Iodine 131 Cesium 137 Cesium Gamma-Ray Energy - kev
17 I-131 and Cs-137 Concentration Levels between March 26 and April 15, 2011 for Muncie and ISBH (Indianapolis) Levels for March 22, 28, and April 3 I-131 Cs-137
18 I-131 and Cs-137 Concentrations in Muncie, Indiana, following Chernobyl Reactor Accident - April 1986 Chernobyl Accident April 26, 1986 Muncie, Indiana Concentrations of I-131 and Cs-137 Concentration Statistical pci/m 3 +/- Sigma - pci/m 3 Date Day I Cs I Cs May May May May Jun Jun Jun Jun Jun Jun Jun Jun Jun
19 April 11 - One Month Later: How does Fukushima compare to Chernobyl? Japan nuclear crisis on same level as Chernobyl according to April 11 msn.com headline Japanese nuclear regulators said the rating was being raised from 5 to 7 the highest level on an international scale overseen by the International Atomic Energy Agency (IEA) after new assessments of radiation leaks from the Fukushima Dai-ichi plant Japan s deputy director-general of the Nuclear and Industrial Safety Agency (NISA), said the decision to raise the severity of the incident from level 5 to 7 the same as the Chernobyl disaster in Ukraine in 1986 was based on cumulative quantities of radiation released No radiation-linked deaths have been reported since the earthquake struck, and only 21 plant workers have been affected by minor radiation sickness, according to Japan s Cabinet Secretary Japanese government says the Chernobyl incident released 5.2 million terabecquerels ( 1.4 x 10 8 Curies) into the air about 10 times that of the Fukushima plant
20 Teachable Moments in Radiation Applications and Topics for Physics, Nuclear Chemistry, and Environmental Science Radon National Radon Study pci/l EPA action level (Note: The above translates to 4000 pci/meter 3 ) Environmental Radiation Compared to Power Plant Releases Radiation Terms/Vocabulary needed to digest daily news
21 Environmental Radiation Selected Terms/Vocabulary Radioactive Alpha, Beta, and Gamma Radiation and Ranges Half-lives Isotopes (Medical and Environmental) X-rays or Gamma rays CT, PET, and Nuclear Medicine Scans Curies, Rads, Sieverts (Rems), and Roentgens Sources of Annual Doses of Radiation for Public and Workers
22 Thank you Comments and Questions
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