SEOUL, September 15. /TASS/. No radioactive traces have been found after the nuclear test carried out by North Korea on September 9, the South Korean Nuclear Safety and Security Commission said on Thursday.
"No traces of radionuclides from a nuclear test have been found on the territory of the Republic of Korea, such as xenon isotopes in the samples of soil, water and air," the commission said in a statement. Samples were collected twice a day starting from September 12. According to the commission, "radionuclides were not found either due to their insignificant amount or to the wind which blew them away in another direction after the underground nuclear test."
Background radiation in South Korea remained within the normal range - from 50 to 300 nanosieverts per hour.
On September 9, North Korea conducted its fifth nuclear test. According to South Korea’s ministry of national defense, it was the most powerful missile Pyongyang ever tested. North Korea conducted four previous nuclear tests in 2006, in 2009, in 2013 and in January 2016.