燃煤电厂储灰场还田的放射性影响评估

邯郸区域燃煤电厂储灰场的粉煤灰中放射性核素含量,除~(40)K外均高于当地土壤中的放射性核素含量,但不影响储灰场还田。实测与化验证实,粉煤灰上种植的小麦、玉米、水稻中的放射性核素含量和非粉煤灰上种植的无差异;在储灰场上劳动的农民年接受外幅射附加剂量仅为国家规定的附加剂量限值的百分之一。

Radiactive Impact Assessment of Returning the Coal-Ash Storage Sites of the Power Stations into Farmland

The radionuclide contents of coal ash from the power stations in Handan Area are higher than that in the local soil except ⁴⁰K. However, this situation doesn't affect the sites to he reformed into farmland. The results of delection show that radionuclide contents in wheat, maize and rice which were planted on the farmland are not different from those planted on ordinary ones, and the additional radiation dosage received annually by the peasants working in the coalash storage sites is only 1% of the limit stipulated by Chinese authorities concerned.