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Consequences of the reactor accident in chernobyl in the federal republic of Germany: Environmental contamination, radiation protection measures, radiation risk assessment
AbstractAs a result of the Chernobyl reactor accident, and depending on the amount of precipitation, the Federal Republic of Germany experienced regionally quite varying degrees of radioactive fallout depositions: the southeastern regions of Bavaria had a 137Cs soil contamination of more than 40 kBq/m2, in the Munich area the contamination proved to be about 20 kBq/m2, north of the river Danube it was below 5 kBq/m2. In consequence, and mainly due to 131I and 132Te, the local dose rate experienced an erratic increase (e.g., in the Munich area), from 0.08 μSv/h to 1 μSv/h within only a few minutes. On account of 137Cs and 134Cs depositions, the local dose rate today is still increased by about 50% in comparison to the time prior to the end of April 1986. In the Munich area, leafy vegetables were contaminated with 131I up to 20 kBq/kg, milk up to 1 kBq/1. Upon recommendations from the Radiation Protection Commission of the Federal Republic of Germany, the sale of milk with a 131I contamination of more than 500 Bq/1 and of fresh leafy vegetables contaminated with 131I by more than 250 B1/kg was prohibited. These precautions were taken to limit the thyroid dose to infants to a maximum value of 30 mSv. A limit of foodstuff contamination by 137Cs and 134Cs was not recommended, since the measured values and the amounts of food consumed, such as fresh leafy vegetables, milk and meat, were not expected to increase the dose per annum from natural sources by more than one third. Later, the EC-limits were established. Due to the Chernobyl fallout, the upper limit of the hypothetical genetic and somatic radiation risk from external and internal irradiation (inhalation of 131I and ingestion of contaminated foodstuffs) of about 2 mSv lifetime committed effective dose equivalent lies within the range of one per thousand in comparison to the spontaneous mean genetic risk of 2–4%, or corresponds to an increase of about 0.002% of the spontaneous cancer mortality of 20% per year on the average.
Consequences of the reactor accident in chernobyl in the federal republic of Germany: Environmental contamination, radiation protection measures, radiation risk assessment
AbstractAs a result of the Chernobyl reactor accident, and depending on the amount of precipitation, the Federal Republic of Germany experienced regionally quite varying degrees of radioactive fallout depositions: the southeastern regions of Bavaria had a 137Cs soil contamination of more than 40 kBq/m2, in the Munich area the contamination proved to be about 20 kBq/m2, north of the river Danube it was below 5 kBq/m2. In consequence, and mainly due to 131I and 132Te, the local dose rate experienced an erratic increase (e.g., in the Munich area), from 0.08 μSv/h to 1 μSv/h within only a few minutes. On account of 137Cs and 134Cs depositions, the local dose rate today is still increased by about 50% in comparison to the time prior to the end of April 1986. In the Munich area, leafy vegetables were contaminated with 131I up to 20 kBq/kg, milk up to 1 kBq/1. Upon recommendations from the Radiation Protection Commission of the Federal Republic of Germany, the sale of milk with a 131I contamination of more than 500 Bq/1 and of fresh leafy vegetables contaminated with 131I by more than 250 B1/kg was prohibited. These precautions were taken to limit the thyroid dose to infants to a maximum value of 30 mSv. A limit of foodstuff contamination by 137Cs and 134Cs was not recommended, since the measured values and the amounts of food consumed, such as fresh leafy vegetables, milk and meat, were not expected to increase the dose per annum from natural sources by more than one third. Later, the EC-limits were established. Due to the Chernobyl fallout, the upper limit of the hypothetical genetic and somatic radiation risk from external and internal irradiation (inhalation of 131I and ingestion of contaminated foodstuffs) of about 2 mSv lifetime committed effective dose equivalent lies within the range of one per thousand in comparison to the spontaneous mean genetic risk of 2–4%, or corresponds to an increase of about 0.002% of the spontaneous cancer mortality of 20% per year on the average.
Consequences of the reactor accident in chernobyl in the federal republic of Germany: Environmental contamination, radiation protection measures, radiation risk assessment
Kaul, Alexander (author)
Environmental International ; 14 ; 83-89
1988-05-10
7 pages
Article (Journal)
Electronic Resource
English
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