That would be my guess. A lump of powder might quickly get hotspots and meltdown. If you can keep a fluidized bed going the heating would be uniform. Maybe that is why defkalion showed that test reactor with a window in it to see when the powder was fluidizing...
On Tue, Jan 24, 2012 at 3:57 PM, Mark Iverson-ZeroPoint < [email protected]> wrote: > Jones:**** > > ** ** > > If you are filling a bucket with water at 1 liter/min., and draining it at > 0.99 l/min, it will take awhile, but will fill up and eventually overflow… > **** > > ** ** > > Question:**** > > Could the quiescence be something as simple as heat not being extracted > fast enough from the Ni-core material and it eventually builds up to begin > melting the Ni tubercles, slowly quenching the ‘active area’? If so, then > my initial thoughts don’t apply and it is an engineering problem.**** > > ** ** > > -Mark**** > > ** ** > > *From:* Mark Iverson-ZeroPoint [mailto:[email protected]] > *Sent:* Tuesday, January 24, 2012 12:40 PM > *To:* [email protected] > *Subject:* RE: [Vo]:Rossi's Best Chance**** > > ** ** > > On 24 January 2012 19:40, David Roberson <[email protected]> wrote:**** > > I agree that they must have a well designed and functioning control unit > to prevent meltdown.**** > > ** ** > > If quiescence is a reality, and **if** it will require a scientific/QM > understanding, the I don’t think any amount of ‘control engineering’ is > going to be much help… one will need to find out the cause of the > quiescence, which is a physics problem…**** > > ** ** > > If the quiescence is of a reasonable periodic nature (i.e., repeatable), > or if it gives you adequate ‘warning’ that it has started, then one could > have 2 or 3 reactor cores inside, only one of which is ‘running’. When it > begins to go into quiescence, one then starts up one of the ‘idle’ cores… > while shutting down the quiescent one. This is a brainless kind of > solution, and wouldn’t work if the quiescent core needs to be unassembled > in order to make it ‘ignite’ again. If reactive capability can be > reinstated by shocking it with a hi-V pulse or cycling H2 pressure, things > like that, then it could be automated and done while in-situ. These are > engineering problems, not scientific ones…**** > > ** ** > > -m**** >
