According to The Enforcement Rules of Disaster Prevention and Protection Act, Radiation Disaster refers to a radiation accident caused by radiation source, radiation operation, or other natural or human factors, resulting in safety hazard to put personnel in radiation exposure or environment contamination. 

In Taiwan, radiological emergency can be classified into 5 categories, including:
1.Nuclear Power Plant Accidents
2.Cross-Border Nuclear emergency
3.Radioactive Material Accidents
4.Transportation of nuclear materials
5.Radiological Dispersal Device

 Radiation Accident Potential Information 
According to “Regulations on the Disclosure of Information about Potential Radiation Disasters “, types and areas of information about potential radiation disasters are included as follows:
1.The Municipalities and County (City) where the nuclear reactor facility is located.
2.The Municipalities and County (City) where the facility with the Category I and Category II Sealed Radioactive Material is located. Category I and Category II sealed radioactive material were according to the definition of ”Administrative Regulations for Radioactive Material and Equipment Capable of Producing Ionizing Radiation and Associated Practice”. 
3.The Municipalities and County (City) where the authorized nuclear materials and radioactive waste storage facility is located.