One of the less widely discussed issues with nuclear is that the bigger plants are all somewhat unique in their engineering particulars, which makes it more costly to maintain them. SMRs can be more readily standardised, which is expected to improve their economics as well as their cost to maintain.
this post was submitted on 01 Feb 2024
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This is only partially true, France for example has standardized its reactors in the past, with a lot of success, and is planning to do it again for the new projects which are planned in the 2030s. Now it was done in the past with little care for local populations and so on, so we'll see how it goes. What is true though is that standardization also makes sense when there is a repetitive market foreseen. New nuclear project tend to be announced in small numbers, due to the difficulty of investing so much capital at a time, which makes standardization difficult. Smaller reactors may help, but I remain sceptical with the tech.
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I've been following the situation in Canada. Afaik the closest we are to getting SMRs is a plan to supplement power production at the Darlington, Ontario CANDU plant using SMRs of the GE Hitachi design. The utility is seeking regulatory approval on the first of 4, but they haven't broken ground yet to the best of my knowledge. Each would put out up to 300 Mw, so I guess the completed project would add 1.2 Gw to the grid.
Ontario gets around half its power from nuclear, and the current provincial government is gung-ho on building more capacity. While I am not opposed to the idea (they would need to build more anyway just to maintain that ratio in coming decades), the fact that it comes at the heels of them cancelling nearly every renewable energy project at the beginning of their term adds a sour note. These included those that were actually under construction, and tax money had to foot the bill on broken contracts. It was flabbergasting. I am cautiously optimistic about SMRs but they are still vapourware for the most part at this time.
It's a known tactic of the fossil fuel industry (and the politicians they own) to push SMRs as a delay tactic, so they can continue to make money from coal and gas for a bit longer. And conservative parties get to play culture war over it, which we know they love to do.
If something real comes out of it then great, but you can't plan an energy transition based on a technology that isn't proven yet.
Oh man, that is just depressing. I mean I wouldn't put it past them. It's like this whole business with carbon capture.
A couple of years ago, I was driving around the Permian Basin near Midland, Texas. I asked a local about all these gas flares you'd see. He said it's waste natural gas. They're drilling for oil, you see, so they just burn it off. When I looked incredulous, he added that it's better than simply venting it. Methane is a potent greenhouse gas! Well sure, but…
Let's just say it would take a lot to convince me at this point that the future is carbon capture.
It’s like this whole business with carbon capture.
Yep, it's very similar to the CCS push from the 2000s. And you saw the Democratic party pushing it too, despite it fast becoming obvious that it's not viable.
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Yes, Soviet/Russian technology, the posterchild for prudence and carefulness.
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The Akademik Lomonosov was supposed to cost the equivalent of $232M, but ended up somewhere north of $700M all for a net electrical output of 64MWe. In that respect, it follows a familiar path for nuclear projects.
On a cost/kW basis, it's about three times the cost of wind installations. ($3625/kW vs $1300/kW)
The last co-gen plant I worked on had an output of 353MWe and cost about $450M, which was about $50M under budget.
This misses one of the key points about smr's. They're supposed to be made in a factory. That ship is one unit and expensive as hell. If you make 100 or more of the same smr, you can amortize the tooling cost over many units. This also allows for configurable size stations. Right now, nuclear stations are one and done, custom jobs.
People keep saying this, but it's not accurate.
An EPR is an EPR, the same with the AP1000. There are only very minor differences between installs, usually things that will help ease of construction or reliability on future builds. Both are GEN III+ designs, greatly simplified compared to previous generations, with fewer pump, valves and pipe-runs. They also shortened pipe runs where possible. They also have large, factory-built assemblies that are shipped to site, ready to "bolt" in, which should have reduced site construction time.
Where major changes do happen, it's with the balance of plant infrastructure, which is site dependent. Location of access roads, where the switchyard is installed, where cooling water is accessed , etc will never be the same between sites. Nor will the geotech information. So a lot of mainly civil and structural design and fabrication will always be site specific.
The KLT-40S reactor is a variant of the KLT-40 reactors developed for and installed in the Taymyr icebreakers back in the late 1980s. It should have been cheap, as it's a known quantity with a long track record.
the world’s first floating nuclear power plant
That's a weird thing to say, considering we've had nuclear power plants inside submarines since 1958.
Ah, but they're not floating. They're sinking, but controlled sinking.
The special thing about submarines isn't that they can go underwater. It's that they can come back up.
Yeah, it's pretty common for subs/ships at Pearl harbor to supply power back to the Hawaiian grid in the case of a blackout.
It honestly could be done at any naval base, but most of them would not be able to meet the needs of the larger urban areas they dock at.
SMRs are interesting.
Frankly i just think we need to take SMR tech and scale it up to stationary plant size. I realize thats a big ask, but it's already a big enough ask to make SMRs a thing that exist and work. Plus a whole plant is more inline with existing regulations.
Also worst case scenario, it's just normal nuclear plants. Instead of a bunch of small ones. We have a bunch of big ones, but with standardized designs.
Big Bespoke Reactors? Isn’t that what we do now?
I thought the entire advantage was to be small and use multiple.
- Construction is cheaper because you can gear up a factory to make many of the same thing
- Assembly is cheaper and more reliable because you have more complete modules shipped in for less site assembly
- Sizing is cheaper because instead of designing for the specific site and specific needs, design for how many standard modules you want
- Enhancing is cheaper because a smaller unit is easier to fit into whatever situation you have than to redesign the whole thing
- Maintenance is cheaper because taking one offline is less of a hit in total power generation
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When they say small, how small are we talking? The size of a sedan? A school bus?
"SMRs — which are smaller and less costly to build than traditional, large-scale reactors"
They somehow forgot to mention a few key things:
They don't actually exist yet.
They may be cheaper but they generate way less power. If you added up the cost of enough SMRs to equal one conventional nuclear plant they would be even more expensive than an already prohibitively expensive method of generating power.
What a dumb article.
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