Abstract
Environmental radiation measurement and model simulation play important roles in the radiation protection of people and environment. This dissertation shows the efforts on the improvements of environmental radiation monitoring and model validation for radiation protection. During the study, this author found some innovative ways for environmental radiation measurement and model validation and display, including designed a new air cooling distillation device for environmental tritiated water monitoring and a mobile environmental survey system (MESS) for managing the works of environmental radiation survey. Both of them have got US patents and domestic patents. Chapter 1 gives a brief description of the importance of nuclear energy, radiation protection, environmental radiation monitoring and model simulation. Literature reviews for environmental radiation monitoring and model validation are given in Chapter 2. Chapter 3 gives the detailed descriptions of the air cooling distillation device. It can be set up and operated more easily than the traditional devices used for the distillation process. The decontamination factor (DF) value is increased about 20 times by increasing the height of the container from 7 cm to 20 cm. Chapter 4 gives the detailed design of MESS which can real time manage the activity of environmental radiation monitoring according to the worker location and the pre-set specific area and display the latest survey result anywhere by Geographic Information System (GIS). MESS can really improve the efficiency and agility of the environmental survey team. Chapter 5 depicts the functions of the atmosphere dispersion display and evaluation platform (ADDEP) which can display the result of atmospheric dispersion simulation on Google Earth and validate the simulation result by integrating data with web-based interfaces for decision making and model improvement. Finally, chapter 6 is the summary of this thesis.