Moltex changed their SSR-W design based on Canadian Nuclear Safety Commission feedback.
It is at the 6 minute mark. Here's a deep-link:
https://www.youtube.com/watch?v=V8ApH-0YHkA&t=362
Being Canadian, and quite excited about their plans to build a pilot in New Brunswick (in Canada), I'm generally as curious about Moltex as I am Terrestrial Energy (who are trying to build a pilot in Ontario).
None of these guys are about to build a pilot in Alberta, where I live, but I can get past that. I don't hold a grudge. You want to build your pilots in Ontario or New Brunswick because they have experienced nuclear construction and operators... well fine. Whatever.
But I do try keep on top of I-MSR and SSR-W, and so it was sort of an interesting thing that I already would have heard about. It is news to me, so maybe news to you?
And from my understanding about TerraPower's Natrium reactor, based on their Travelling Wave Reactor concept (which ceased to be a travelling wave long ago), the SSR-W change might also have implications for them too?
New Brunswick Power doesn't want to be shuffling pseudo-fuel-rods around too many times. Their CANDU requires lots of fuel-rod shuffling, and they don't like it.
Also, at the 10 minute mark, Ian Scott talks about burn up being limited anyway by "neutron irradiation data available for materials." What-hey-now, what?
I'll just post the talk to YouTube and not be all chatty about the SSR-W change (and burnup expectations) in my metadata.
Build Back Better
Incoming Biden administration is accepting applications. I'd hope to see pro-nuclear folks working in or with the administration, as opposed to trying to influence from outside? Go work at a national lab and get me some good b-roll, please!