Corium Experiments; Pedestal Behaviors Using Lead Part II

Following the initial published findings of our corium experiments in lead, an additional run was done. Read about the initial lead experiment here and the corium experiments in glass here.

This follow up run of the lead experiment was done using the same process as the initial one but included a new “floor”. The new lead volume was 250g. Of that about 150g fell through to the “floor” (about 60%).  A different material was used as the containment floor. On the previous experiment it was noticed that the ceramic saucer used as a floor had adhered to the lead and appeared to have acted as a heat sink. In this version a steel food container lid was used to determine if the lead would behave differently without the ceramic heat sink effect.

SAM_0628 The lead melt on the steel lid above. A portion of the lead left the pedestal as seen in the lower section. The run off was due to the lead still being slightly liquid when the pedestal was lifted. The lead at the edge then ran under the pedestal. The lead did flow quickly when heated. It also partially solidified quickly.
SAM_0631  Close up of the lead that left the pedestal via the doorway. This is more than the earlier run.  
Close up of the tea strainer partially lined with aluminum foil to hold the lead weights used in the experiment.

SAM_0636Lead “corium” melt underside. This version showed no adhering as was seen in the ceramic version. The new version on steel showed some considerable gas pockets on the underside but the center is mostly flat. Compared to the previous version using ceramic where there was more of a raised area in the center.


Side view of the melt mass. It appears somewhat thinner than the previous experiment. The composition of the floor and volume of the melt that fell contributed to the different outcome.

This article would not be possible without the extensive efforts of the SimplyInfo research team
Join the conversation at

© 2011-2023, All Rights Reserved Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than (or it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission.



Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: