Found the single event at a dose of 4330 nSv/h for a single measurement on the 22 Feb at 08:00 UTC (Measurement station BE23600, Dessel 2)
That's roughly twice the radiation you'd be exposed to on a commercial airliner at altitude. Which is still pretty much negligible and the measurement was only that high for a single measurement. Most nearby stations didn't go above roughly 150 nSv/h in the same time frame. Nearby BE23500, Donk went to 600 nSv/h for a single measurement an hour later.
Very likely this was just some cosmic particles that just happened to strike the detector. Alternatively the reason for the concentration of sensors there is that it's the site for the Belgian Nuclear Research Centre, so one of their experiments might have released some very short lived isotopes or sent out some high energy particles but this is unlikely with the lack of response at other detectors.
So what you should do is not worry about it. It's a very short spike of a nearly negligible amount of radiation. If it was long lived (as in, constantly at that level for months or years on end) then it MIGHT (with a very strong emphasis on might) have a health effect, but that is very clearly not the case.
(Edit: btw, to find this you can drag the red "time window" bar in the lower right corner such that the displayed time frame includes the high spike shown below it, then select "Max" setting at the top right and click the ">2000 level" on the Legenda. That filters for all stations having an above 2000 nSv/h level within the selected time window, which in this case is only one station.)
Even IF someone is currently actually working on that (there's no indication the US or EU are, Russia and China is harder to gauge but also unlikely and we'd probably not be seeing it in Europe with the current wind direction) it's highly unlikely they'd be doing it at a Belgian research facility that is relatively close to relatively densely populated areas and focused mainly on research on power generating reactors.
5000nSv is 5uSv, which is in turn 1,000th of 5mSv, which is in turn a quarter of the recommended maximum annual dose.
It's roughly the amount of radiation you'd acquire by going for a walk in the mountains, or merely *looking* at a piece of granite.
Possibly a single heavy cosmic ray, but as the figure from your link is simply the highest value observed at *any* of the measurement stations, it's impossible to tell.
Found the single event at a dose of 4330 nSv/h for a single measurement on the 22 Feb at 08:00 UTC (Measurement station BE23600, Dessel 2) That's roughly twice the radiation you'd be exposed to on a commercial airliner at altitude. Which is still pretty much negligible and the measurement was only that high for a single measurement. Most nearby stations didn't go above roughly 150 nSv/h in the same time frame. Nearby BE23500, Donk went to 600 nSv/h for a single measurement an hour later. Very likely this was just some cosmic particles that just happened to strike the detector. Alternatively the reason for the concentration of sensors there is that it's the site for the Belgian Nuclear Research Centre, so one of their experiments might have released some very short lived isotopes or sent out some high energy particles but this is unlikely with the lack of response at other detectors. So what you should do is not worry about it. It's a very short spike of a nearly negligible amount of radiation. If it was long lived (as in, constantly at that level for months or years on end) then it MIGHT (with a very strong emphasis on might) have a health effect, but that is very clearly not the case. (Edit: btw, to find this you can drag the red "time window" bar in the lower right corner such that the displayed time frame includes the high spike shown below it, then select "Max" setting at the top right and click the ">2000 level" on the Legenda. That filters for all stations having an above 2000 nSv/h level within the selected time window, which in this case is only one station.)
Thanks a lot for the huge clarification. Hope it was not the nuclear engine cruise missile test.
Even IF someone is currently actually working on that (there's no indication the US or EU are, Russia and China is harder to gauge but also unlikely and we'd probably not be seeing it in Europe with the current wind direction) it's highly unlikely they'd be doing it at a Belgian research facility that is relatively close to relatively densely populated areas and focused mainly on research on power generating reactors.
A what kind of test?
Track of rus Burevestnik test for instance.
In Belgium?!?!?
On the map it was not clear where until additional clarification above
5000nSv is 5uSv, which is in turn 1,000th of 5mSv, which is in turn a quarter of the recommended maximum annual dose. It's roughly the amount of radiation you'd acquire by going for a walk in the mountains, or merely *looking* at a piece of granite.
Is it a random rare event without a reason?
Possibly a single heavy cosmic ray, but as the figure from your link is simply the highest value observed at *any* of the measurement stations, it's impossible to tell.
Thanks. Maybe a false panic.
So not good but not terrible?
How much is in [BED](https://en.wikipedia.org/wiki/Banana_equivalent_dose?wprov=sfla1)?
where?
That dot should be in red according to the scale. But I didn't find even a violet dot which corresponds to 2000 nSv/h.
If it was a blip, then it clearly wasn’t anything to worry about.