进口硝酸钾放射性超标事件的调查报告

Investigation report of imported potassium nitrate radiation excess event

目的防止不可控的放射性物质传入我国,保护我国环境及人民身体健康。方法对2012年1月进口的硝酸钾货物进行放射性检测。结果监测点的平均剂量率水平(本底值)为0.13～0.18μSv/h,测得货物整体最高值为0.75μSv/h;β/γ活度最高值为1.95Bq/cm2。结论对放射性异常的判定,需经科学合理的分析,并结合实验室检测作出定论。

Objective This paper aims to prevent uncontrollable radioactive substances from entering our country, and protect our environment and the health of the residents. Methods Radiation detections are carried out on potassium nitrate cargos imported in January, 2012. Results The background level at the monitoring port is 0.13 0. 18 μSv / h. The maximum value of the measured integrated cargos is 0. 75p, Sv / h. The active peak value of β/ γ is 1.95 Bq / cm2. Conclusion The conclusion of abnormal radiation should be subject to scientific and rational analysis, combined with laboratory testing.