Study on Radiation Protection for Crew Member in Maritime Mobile Radiation Monitoring System

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  • 海上移動型放射線モニタリングシステムにおける船舶職員の放射線防護に関する研究

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Abstract

The monitoring posts and monitoring cars are main tools for prevailing Emergency Radiation Monitoring, ERM, in case of a nuclear accident. However, they eventually lost their ability to function normally when most of roads and electricity networks were heavily damaged by the large earthquake and huge Tsunami in 2011. Thus, we propose a Maritime Mobile radiation Monitoring system in order to support ERM system. In this M3 system, we use temporarily a training ship belonging to national universities or colleges. A member of experts in the fields of radiation safety and nuclear engineering will get on board with several types of radiation monitors and radiation protection equipment. Then, the ship will approach the nuclear power station from the sea and become a kind of the front-line base for ERM operation on the sea. In this study, as a part of M3 project, we have calculated the dose rate when the radiation source would exist outside and inside of the ship from a viewpoint of radiation protection. An internal exposure to crew member has also been discussed in a severest case.

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