| 摘要 |
PROBLEM TO BE SOLVED: To provide a decontamination method for buildings, plants, or soil that prevents radioactive materials from spreading peripherally, since a water jet, which is being considered to be used for decontamination of buildings in a wide area contaminated with radioactive materials generated by Fukushima Daiichi Nuclear Power Plant severely damaged by the Great East Japan Earthquake, has a risk of further spreading of radioactive materials.SOLUTION: When decontamination is conducted for buildings, plants, or soil, the following steps are carried out sequentially: a first step in which spray coating of a washing agent is applied to surfaces of buildings or the like to let it reach every corner of them without allowing it to spread peripherally; a second step in which the applied washing agent is removed to clean the buildings or the like; and a third step in which the removed washing agent mixed with radioactive materials is treated as radioactive waste. Thus, decontamination of the buildings or the like can be carried out easily at low cost without spreading of the radioactive materials in their circumference environment. |
