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라돈의 위해의사소통 기법수립을 위한 사전 인식도 조사연구
김현탁,김신도,이철민,권명희,박태현,박시현,곽정은 한국냄새환경학회 2016 실내환경 및 냄새 학회지 Vol.15 No.4
The present study was conducted to investigate the public awareness level of the Korean population on the hazardsof radon. Its purpose was to serve as a preliminary study for the development of a risk communication programsuited to Korean domestic conditions. An in-house developed questionnaire was used as an awareness surveyingtool. Five thousand people (adults) from the general population, randomly selected regardless of their age, academicbackground, income level, and regional distribution were surveyed. The survey was conducted between December2015 and February 2016, and completed in a self-reporting format. The survey results showed that publicawareness of the radon risk was very low, as indicated by more than roughly 85% of the respondents saying thatthey did not know what radon was. Moreover, survey results for those who knew what radon was showed a verylow level of awareness regarding the physical properties and hazards of radon. Through the findings of the presentstudy, it was confirmed that the awareness of radon hazards among the residents of Korea needs urgentimprovement and that the development of a radon risk communication program accounting for age, income, region,occupation, and various information delivery routes is also needed.
KSLV-2를 이용한 금성 내 핵 폐기물 처리 개념 설계
김현탁,박철,권세진 한국항공우주학회 2014 한국항공우주학회 학술발표회 논문집 Vol.2014 No.11
원자력 발전을 통해 생성되는 사용후핵연료 중에서, 일부 방사성 물질은 지구 내 처분을 고려할 시 여러 제한사항에 직면한다. 대안으로써 우주 내 처분 개념이 제시되어 왔으며, 본 연구에서는 KSLV-2 발사체를 이용한 금성 내 핵 폐기물 처리 개념 설계를 진행하였다. 300-2000 km 타원형 주차궤도에서 금성 전이 궤도 투입을 위한 임무속도는 약 3.138 km/s이다. 전술한 임무속도와 고체 킥모터의 제원을 고려, KSLV-2에 추가할 4단을 설계하고 3자유도 궤적계산을 수행하였다. 상기 주차궤도로 투입된 4단은 킥모터 연소 후 금성 전이궤도로 투입되었으며, 약 120일 후에 금성에 도달하였다. 운반된 핵 폐기물은 방사능 차폐막을 포함하여 약 490 kg이다. 처리 용량 증대를 위해 후속적인 대형 발사체 개발과 안전성 검토, 제작 비용 절감 등이 요구된다. Disposal of some radioactive materials out of spent nuclear fuel, which is produced from nuclear power generation, has many limitations on the Earth. Space disposal has been proposed as an alternative. In this study, conceptual design for the space disposal in the Venus was performed using KSLV-2. Mission velocity for trans-Venus injection from the 300-2000 km parking orbit is about 3.138 km/s. Considering the mission velocity and characteristics of the applicable kick motor, the 4th stage above the KSLV-2 was designed and 3 degree of freedom trajectory calculation was performed. 490 kg of nuclear wastes package including radiation shielding material reaches Venus in about 120 days. A large-sized space launch vehicle, safety review and manufacturing cost reduction are required for disposing of many nuclear wastes.