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ICRP International

Conference on Recovery After Nuclear Accidents

Radiological Protection Lessons
from Fukushima and Beyond

December 1 - 18, 2020

L.Y. Krestinina, S.S. Silkin, A.V. Akleyev

Updated: Dec 11, 2020

Carcinogenic Effects in the Exposed Population in the Southern Urals

L.Y. Krestinina, S.S. Silkin, A.V. Akleyev (Urals Research Center for Radiation Medicine, URCRM, Russia)


In the fifties of the twentieth century, two radiation incidents occurred in the South Urals, Russia (the discharge of liquid radioactive waste into the Techa River in 1949-56 and a thermal explosion in the radioactive waste storage in 1957, which resulted in the formation of the East Urals Radioactive Trace). The consequence of these events was the prolonged exposure of the population living in these territories. In the Urals Research Center for Radiation Medicine in Chelyabinsk, cohorts of the exposed population have been formed, the follow-up period for cancer morbidity and mortality is more than 60 years. Studies show that there is a statistically significant increase in the leukemia risk among the Techa River cohort members and an increase in the risk of mortality and morbidity from solid cancer, depending on the dose in the exposed population. The report presents the results of the analysis of radiogenic risk both in those exposed on the Techa River and on the territory of EURT.

 

南ウラルの被ばく集団における発がん性の影響

L.Y. Krestinina, S.S. Silkin, A.V. Akleyev (Urals Research Center for Radiation Medicine, URCRM, Russia)


1950年代、ロシアの南ウラルでは2件の放射線事故(1949~56年の液体放射性廃棄物のテチャ川への放出、及び東ウラル放射性トレースの形成を生じた1957年の放射性廃棄物貯蔵庫の熱爆発)が発生した。これらの事故の結果、これらの地域の住民の被ばくが長期化した。チェリャビンスクのウラル放射線医学研究センターでは、被ばく住民の集団が形成されており、がんの罹患率と死亡率の追跡調査期間は60年を超えている。研究により、テチャ川集団のメンバーに白血病のリスクの統計学的に有意な増加、及び被ばく住民の線量に応じた固形がんによる死亡率と罹患率のリスクの増加が生じていることが示されている。本報告書は、テチャ川とEURTの領土内で被ばくした人たちの放射線リスクの分析結果を紹介している。

 

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