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MSR fuel processing

Posted: Tue May 27, 2014 5:24 pm
by djw1
Perhaps not the right topic, but our molten salt project
has been making extensive use of Serpent for burn up, trifluoride build up, temp coefficients, decay heat, etc, etc.
Many thanks. We will go public as soonas we can.

A key to this has been Manu Aufiero's patch that adjusts the fuel salt composition
to stay just critical at each burn up step. Unfortunately, using the patch
without messing with the code means writing shell scripts
that edit the additional header files that Manu added, recompiling, running,
and then re-editing the header files to the original.

The proposed branch cards promise to remove a lot of drudgery
for the solid fuel types, but I dont see any similar plans
for a fuel adjust card that implements Manu's algorithm.

Where do we stand on this?

Jack

jack

Re: MSR fuel processing

Posted: Wed May 28, 2014 10:19 am
by Jaakko Leppänen
The branch cards introduced in the memo are not really intended for the continuous reprocessing of MSR's, and I'd rather keep the methodology simple for easy maintenance. I've been planning to include Manuele's MSR routines in the official version of Serpent 2 for more than 6 months now, and I will definitely do that before the public release. I'll make another note to myself that this needs to be done rather sooner than later...

Re: MSR fuel processing

Posted: Wed May 28, 2014 12:36 pm
by Jaakko Leppänen
Also, the branch capability is intended for making momentary variations in the physical conditions by means of restart calculations using material compositions stored during a single burnup history calculation. What you are talking about here is changing the conditions during the actual burnup calculation. I've thought about extending the use of the branch cards in such way that they could be used for adjusting boron concentration, control rod positions, etc. during burnup, but I think this falls under a different topic. In any case, MSR burnup calculations are best handled using Manuele's routines.

Re: MSR fuel processing

Posted: Thu May 29, 2014 9:08 pm
by djw1
Thanks. We will stay tuned.

Jack