Chernobyl is back in the news due to an unexpected turn of events
www.earth.com
A study reveals that the cause of Chernobyl was not hidden fission, but changes in humidity inside the reactor, revealed by neutron spikes.
  • thespcicifcocean@lemmy.worldEnglish
    0·
    15 days ago

    They said that the keff value doesn’t exceed 1.27, is that within the normal range for this? Anything over 1 is supercritical, so shouldn’t any value of greater than 1 be concerning?

    • BussyCat@lemmy.worldEnglish
      2·
      10 days ago

      “The calculated growth factor of the NFD due to the increase in Keff does not exceed 1.27,”

      I am not positive but I think they mean the increase of neutron flux density does not exceed 1.27 and the cause of the increase of neutron flux is to due to an increase in Keff. Because otherwise 1.27 is prompt criticality and that would be a very bad day