Radioactivity Dynamics in forests
ＱIn future, what will be radiation exposures to forest workers? Are there any methods to reduce it?
ＡIt is possible to estimate radiation exposure of a worker from air dose rates in the working places. The radiation exposure can be reduced by using silviculture equipment or wearing radiation-protective suit.
- The external radiation dose per unit area becomes high with the increase of working time.
- Radiation doses of workers in heavy machine tend to be lower than those of outside workers.
- External radiation doses of workers wearing radiation-protective suits are reduced by 15-20%.
- When special radiation-shielding sheets are used in a driver’s seat of a heavy machine, the radiation dose of the operator is reduced by about 5%.
Reference ：Text edition “Forests・Wood and Radioactive Materials 2015 (the Forestry Agency)
- Does the concentration of radioactive cesium deposited in mountain forests vary by altitude and location?
- Do sediment with high radioactive cesium concentration continue to be deposited on river bottoms?
- Is there a continuous input of cesium contamination to rivers from forests?
- How much did the amount or the concentration of Cs released to river water by forest fire? How did them change by time?