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Monitoring of Radionuclides in the Air in the Czech Republic after the Fukushima NPP Accident

Monitoring of Radionuclides in the Air in the Czech Republic after the Fukushima NPP Accident. Miroslav Hyza et Al. National Radiation Protection Institute. Czech R adiation Monitoring N etwork. a ir contamination measuring sites. Dukovany and Temelin NPPs. Filter 1x week

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Monitoring of Radionuclides in the Air in the Czech Republic after the Fukushima NPP Accident

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  1. Monitoring of Radionuclides in the Air in the Czech Republic after the Fukushima NPP Accident Miroslav Hyza et Al. NationalRadiationProtection Institute IRPA 13 Glasgow

  2. Czech Radiation Monitoring Network air contaminationmeasuringsites Dukovany and TemelinNPPs • Filter1x week • Charcoal sorbent 1x month • Fallout 1x month 10 Measuringsites 4 laboratories Aerosols, gases, fallout IRPA 13 Glasgow

  3. Sampling equipment 900 m3/h 120 m3/h 12 m3/h Pirrko - wet/dry falloutcollection Charcoal sorbent cartridge 3 IRPA 13 Glasgow

  4. HPGegammaspectrometry Marinelli, beakers, filtersdetection limit for Cs137 10E-7 Bq/m3 Radiochemicalanalysis (Pu, Sr)detection limit forSr 90: 3E-8 Bq/m3detection limit Pu 239+240: 2E-10Bq/m3 IRPA 13 Glasgow

  5. Rangeofvalues Tef = 3.5 days Tef = 3.7 days Tef = 6.5 days Tef = 7.1 days IRPA 13 Glasgow

  6. Sr 90, Pu 238 a Pu 239, 240 – background level • Am 241 a Cm 242 – not found • Natural radionuclides: • Be 7 : max 10 000 µBq/m3 (average - 3000 µBq/m3) • Pb 210 : max 2000 µBq/m3 (average - 500 µBq/m3) IRPA 13 Glasgow

  7. IRPA 13 Glasgow

  8. 1986 vs. 2011 in the Czech Republic (averagevalues) Maximalobservedvalues IRPA 13 Glasgow

  9. 1986 vs. 2011 in the Czech Republic IRPA 13 Glasgow

  10. NationalRadiationProtection Institute Thankyouforyourattention IRPA 13 Glasgow

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