earticle

영어

Since 1990s, some events - detection of a dirty bomb in a Russian nation park in 1995, 9/11 terrorist attack to WTC in 2001,discovery of Al-Qaeda’s experimentation to build a dirty bomb in 2003 etc - have showed that nuclear or radiological terrorism relatingto radioactive materials (hereinafter “radioactive materials” is referred to as “nuclear material, nuclear spent fuel and radioactive source”)isnot incredible but serious and credible threat. Thus, to respond to the new threat, the international community has not only strengthenedsecurity and physical protection of radioactive materials but also established prevention of and response to illicit traffickingof radioactivematerials. In this regard, our government has enacted or revised the national regulatory framework with a view to improving security ofradioactive materials and joined the international convention or agreement to meet this international trend. For the purpose of preventionofnuclear/radiological terrorism, this paper reviews physical characteristics of nuclear material and existing detection instruments used forprevention of illicit trafficking. Finally, national detection regime against nuclear/radiological terrorism based on paths of the smuggledradioactive materials to terrorist’s target building/area, national topography and road networks, and defence-in-depth concept is suggestedin this paper. This study should contribute to protect people's health, safety and environment from nuclear/radiological terrorism.