Possible radiation leak from North Korea nuke test

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Fri Sep 08, 2017 8:41 am

Monitoring stations record upward trend, but expert says it could be explained by natural causes
The changes could be down to environmental factors and unrelated to the nuclear test, but the trend was “worthy of attention”, said a scientist who sits on a panel that advises the Chinese government on emergency responses to radioactive hazards.
The radiation level in Changbai Korean autonomous county – the closest Chinese urban area to the Punggye-ri test facility – climbed gradually from an average of 104.9 nanograys per hour immediately after the test on Sunday to 108.5 on Tuesday, according to figures released by China’s environment ministry.

By Wednesday morning the average level in the county, which lies about 80km west of the blast site, had risen to 110.7 with a peak of 112.5.

Nanograys per hour is the standard unit for measuring the absorption of radiation by human tissue.

Similar upward trends were reported by monitoring stations in other regions, including in Antu county at the foot of Changbai Mountain and in Yanbian Korean autonomous prefecture further north.

Guo Qiuju, a professor of radiation protection at the school of physics at Peking University, said it was too early to be certain what had caused the rising trend at the monitoring stations as radiation levels change over time even under normal conditions.

The public had no need to panic as no suspicious trace elements were detected by the government on Tuesday, she said.

“If something bad had happened I would be one of the first to be informed,” she said. “I have not received the call so far.”

The current radiation levels were far below anything that could be regarded as a risk to people’s health, she said, “but if the figures keep going up it may require a closer look”.

http://www.scmp.com/news/china/diplomac ... lose-north
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DWS Staff
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Fri Sep 08, 2017 12:57 pm

Traces of xenon gas, a radionuclide, were detected in South Korea, the nuclear safety agency said Friday, five days after North Korea conducted its most powerful nuclear test.

the radioactive material, the xenon-133 isotope, was found in the Nuclear Safety and Security Commission's analysis of ground, air and maritime samplings that were collected locally after the latest nuclear test by the North, according to the agency.
The detected amount measures 0.43 milibecquerel per cubic meter or 0.03 mBq/㎥, according to the analysis.
The agency added, however, that the amount would not have any health effects as South Korea's background radiation currently remains at the usual level of 50-300 nanosieverts per hour.
http://m.yna.co.kr/mob2/en/contents_en. ... 0100000000

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Fri Sep 08, 2017 4:59 pm

Information about radiation from this event is difficult to come by. More likely than not, the traces found are so low as to not be worthy of reporting, especially for China which wants to keep the public from panicking. Still, keep an eye out for any reports.

I have listed what we know under Radiation Reports. That info will be deleted tomorrow if nothing new comes up. I generally don't keep radiation reports alive for more than 48 hours unless it is high or we get new information.

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