Current Status of Scenario for Current Status of Scenario for Modelling Contaminant Modelling Contaminant Transport and Countermeasures Transport and Countermeasures EMRAS-2 Urban Working Group EMRAS-2 Urban Working Group January 25-29, 2010 January 25-29, 2010 Vienna Vienna Won Tae Hwang Won Tae Hwang
Contents Contents � Description of a Selected Region � Description of a Selected Region � Input Information � Input Information � Modelling Endpoints � Modelling Endpoints 2/19
Geographical Location Geographical Location 3/19
Nuclear Facilities in Korea Nuclear Facilities in Korea : Operating : Operating : Constructing : Constructing : Nuclear complex site : Nuclear complex site : Radiowaste disposal site : Radiowaste disposal site Ulchin Taejeon Kyungju Wolsong Kori Yonggwang 4/19
Description of a Selected Region Description of a Selected Region � A central region of Seoul (capital city � A central region of Seoul (capital city of Korea) was selected for model of Korea) was selected for model testing testing � Provided geographical information � Provided geographical information � Climate characteristics (Seoul) � Climate characteristics (Seoul) - Temperature/Precipitation/Humidity/ - Temperature/Precipitation/Humidity/ Wind elements etc. Wind elements etc. 5/19
Description of a Selected Region Description of a Selected Region � (To be continued) � (To be continued) � Human geographical characteristics � Human geographical characteristics (Seoul) (Seoul) - Population/Living type/Land use/ - Population/Living type/Land use/ Traffic condition/Street cleaning etc. Traffic condition/Street cleaning etc. � Detailed information on a test site � Detailed information on a test site - BD attributes (height/width/material) - BD attributes (height/width/material) - Land-use attributes (street/road/park) - Land-use attributes (street/road/park) 6/19
Aerial Photo of the Test Site Aerial Photo of the Test Site Region 1 Business area Region 2 Park area 7/19
Close-up Photo of Region 1 Close-up Photo of Region 1 Building 1 24 story office BD Building 2 30 story office BD Building 3 16 story office BD Building 4 Pavilion for Exhibition (KOEX) 8/19
Close-up Photo of Region 2 Close-up Photo of Region 2 9/19
Additional Information (1) Additional Information (1) 10/19
Additional Information (2) Additional Information (2) 11/19
Input Information Input Information � Radionuclides � Radionuclides � Co-60/Pu-239 � Co-60/Pu-239 � Weather conditions during an event � Weather conditions during an event � Dry/Light rain (3mm)/Heavy rain � Dry/Light rain (3mm)/Heavy rain (20mm) (20mm) � Date of an event � Date of an event � 1 June (summer)/1 January (winter) � 1 June (summer)/1 January (winter) � Initial time-integrated radionuclide � Initial time-integrated radionuclide concentration in air at ground level is concentration in air at ground level is 1 MBq d /m 3 1 MBq d /m 3 12/19
Modelling Endpoints Modelling Endpoints � Contamination density at outdoor � Contamination density at outdoor � External total dose rate at outdoor � External total dose rate at outdoor and at different floors of indoor and at different floors of indoor � Contribution of each surface for total � Contribution of each surface for total dose rate dose rate � Internal dose for hypothetical � Internal dose for hypothetical scenarios scenarios � Countermeasure effectiveness � Countermeasure effectiveness 13/19
Thank you Thank you 14/19
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