I just a twitter thread (can’t find it now) that suggests the elevated readings of radiation around Chernobyl may be attributed to agitated soil stirred up as tanks went through the area. It mentioned the sensor readings spiked around the same time the tanks would have entered the area and several of them returned to normal levels before they went offline.
Again this is unverified information but hopefully one that comes to fruition, damages to that site could/would be catastrophic .
Edit: found thread
https://twitter.com/user/status/1497215329767870470