Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×
Power

Westinghouse Unveils Small Modular Nuclear Reactor (reuters.com) 183

An anonymous reader quotes a report from Reuters: U.S. company Westinghouse unveiled plans on Thursday for a small modular reactor to generate virtually emissions-free electricity that could replace coal plants or power water desalinization and other industries. Rita Baranwal, the Westinghouse Electricity Co's top technology officer, said the reactor, dubbed AP300 for its planned 300 Megawatt capacity, will not use special fuels or liquid metal coolants unlike some other next-generation reactors. It will be a smaller version of its AP1000 reactor, several of which are operating in China, and which are ramping up in Georgia at the Vogtle plant, after years of delay and billions of dollars over budget.

Despite hurdles for new nuclear, Baranwal was confident. "We've kept it simple, designed it on demonstrated and licensed technology, and I think that's one of the advantages that we have with this concept," she told Reuters in an interview. Westinghouse, owned by Brookfield Business Partners, plans to start constructing the reactor by 2030 and have it running by 2033. So far the design for only one SMR, planned by NuScale Power, has been approved by U.S. regulators and it still needs permits.

Westinghouse did not reveal how much the first reactor would cost, but said later units would cost about $1 billion. The company, based in western Pennsylvania, has had informal talks with parties in neighboring states Ohio and West Virginia about the potential building of AP300s at former coal plants. Westinghouse also hopes to sell reactors to countries in eastern Europe, even though nuclear power critics have expressed concerns that developers and governments should think carefully before building new nuclear plants anywhere near the region. They noted that Russia took the Zaporizhzhia nuclear power plant in Ukraine, the site of repeated shelling.

This discussion has been archived. No new comments can be posted.

Westinghouse Unveils Small Modular Nuclear Reactor

Comments Filter:
  • I'm going to go get mine now! [youtube.com]

  • I fully support free enterprise. If some business thinks they profit in the YS without welfare I hope they buy and install this reactor. I just donâ(TM)t want it to be another case where a reactor ends up only being a hole in the ground and the ratepayers end up paying executive salaries for years.
    • Re:No welfare (Score:5, Interesting)

      by mobby_6kl ( 668092 ) on Friday May 05, 2023 @11:44AM (#63499410)

      There are massive subsidies for fossil fuels as well as renewables. Let's do nuclear too.

      • by fermion ( 181285 )
        Subsides are not welfare. Texas produces twice as much power from wind and solar as from nuclear, produces a quarter of the wind energy in the nation, so any funding means power for the people. Nuclear welfare means we might get power in a decade. If the welfare queens donâ(TM)t just keep pushing the ball down the road.
      • by AmiMoJo ( 196126 )

        Wind is now subsidy free in Europe. Offshore and onshore.

  • As long as a small reactor has the same risks and siting requirements as a large one, these can't be competitive. If your fixed costs for a 100MW output unit are approaching the same as a 1000MW unit, then the choice is kinda obvious from a business perspective (or to build something else that's cheaper)
    • by Mspangler ( 770054 ) on Friday May 05, 2023 @10:00AM (#63499146)

      Economics are the key.

      On the other side small reactors are easier to site, they need less cooling water for one example. They are easier to control, the negative temperature coefficient is larger because the surface area to volume ration is larger, and emergency cooling is easier, less total heat to dump.

      The Navy ran S5W reactor plants for decades, then moved to the twice as big S6G for more decades. The S5G and S8G reactors can run at low power on natural circulation, so a whole group of problems from loss of flow don't happen as long as gravity still works. Small reactors do have a long history.

      Not everything follows the usual scaling rules used in chemical engineering that dictates that one big one is cheaper than two little ones.

      • by AmiMoJo ( 196126 )

        SMRs only need less cooling water because they produce less power. While it's true that they require a cooling pool rather than a constant supply of water from a river or the sea, if you want to match the output of traditional reactors you need a lot of pools.

        They aren't just random swimming pools either, they have to be extremely resilient and constantly monitored. If they leak the reactor can melt down. Not ideal in parts of the world that experience earthquakes, for example.

        I'm sceptical that in the end

        • The pool of water is to protect the reactor, not to protect the lives of people. If the water is lost then the reactor could melt down but a meltdown does not mean radiation or material escapes containment. A meltdown will be expensive so they will want to take reasonable measures to prevent it. If this is a problem in earthquake prone areas then they will have to take measures to protect against that. We build things in places that get earthquakes, things that could cause considerable loss of life if t

        • by jsonn ( 792303 )
          Let me rephrase that. Any form of a thermoelectric power plant needs cooling and typically only releases 40% of the generated heat as power. It doesn't matter what size the plant is, those are the basic laws of physics. Now, this cooling can be done using multiple methods, but all of them suck when it is a hot summer with drought and you are not physically next to an ocean that it hopefully doesn't matter if you pump extra heat into it. Evaporation cooling wastes water, river cooling kills wildlife, wind co
        • The pool is part of the Westinghouse design and is inside the reactor containment vessel above the reactor. The entire system is entirely contained and the heat exchanger is the entire outside wall of the containment vessel. Do you really think the reservoir pool is the key engineering design problem?
          • by AmiMoJo ( 196126 )

            Exactly, they need to build a large containment building for each reactor and its pool. Since each reactor only produces a few hundreds of megawatts max, it's suddenly looking pretty expensive.

      • Not everything follows the usual scaling rules used in chemical engineering that dictates that one big one is cheaper than two little ones.

        Except big ones are cheaper than two little ones. Best estimates so far for SMRs have put them at a cost that is anywhere from 5x to 20x that of a large scale nuclear facility in per MWh generated terms.

        Even here you're talking about reactors significantly larger in terms of thermal output than the ones you're comparing them to.

        Westinghouse is quoting a mythical $1bn for an as yet to be optimised / economies of scaled production run of these 300W reactors.
        This is the same Westinghouse that quoted $6bn for 2

        • Except big ones are cheaper than two little ones. Best estimates so far for SMRs have put them at a cost that is anywhere from 5x to 20x that of a large scale nuclear facility in per MWh generated terms.

          Well, theoretically. As we've seen, big projects (not just nukes) tend to run over budget and time. Smaller projects are easier to manage and account for contingencies. When building many identical reactors you can also learn from the process and improve it, vs making one huge one per decade.

          China is building SMRs now. Let's build a few dozen and see how that goes.

      • Not everything follows the usual scaling rules used in chemical engineering that dictates that one big one is cheaper than two little ones.

        Nuclear reactors absolutely do, and it has nothing to do with chemical engineering. It has to do with inspection costs, site design costs, per-unit fueling costs, site security costs, and per-unit decommissioning costs (if you don't plan and account for the full cradle to grave lifespan, you are doing it wrong.) It doesn't cost only 1/3 as much to weld and inspect a pipe that carries only 1/3 as much coolant. It probably costs 2/3 as much. By making the same shitty design smaller, they're going to have all

  • If only... (Score:2, Insightful)

    If only we would build these at the same pace that wind and solar plantations get built, we wouldn't have an electricity supply problem.

    • If we could build these at the same *cost* that wind and solar plantations get built we wouldn't have the problem. The problem with pace is largely related to the desire of the product. The reason the nuclear industry is in the state that it is is because they largely didn't have customers who instead opted for cheaper solutions which left the industry in tatters.

    • We need different kinds of reactors for nuclear to be even a medium-term solution to our hunger for more electricity.

      Global readily available uranium sources will be tapped out by the end of the century at current consumption rates and their typical use scenarios.

      We're still using gasoline at scale after a century, and we're looking to replace it with something that we currently expect will run out in less than a human lifetime. That seems pretty short sighted.

      We shouldn't build any more traditional nuclea

      • Global readily available uranium sources will be tapped out by the end of the century at current consumption rates and their typical use scenarios.

        This sort of problem almost never turns out to actually be a problem. As readily-available sources decline, the price rises and other sources are identified and techniques for exploiting them invented. Very often, this results in greater supply and lower price than before we approached depletion. In this case, for example, we could ultimately fall back on extracting uranium from seawater. Right now, our methods for doing cost orders of magnitude more than mining it... but the cost of fuel is negligible for

      • 50 year ago we had 50 years of available oil reserves. Today, we still have 50 years of available oil reserves. 50 years from now, we will still have 50 years of available oil reserves. That is how far ahead it is practical to look, not how much is actually left.

  • ... some New York city [slashdot.org] apartments kicking in for one of these when the oil and gas heat has got to go.

  • I expected a somewhat transportable item, not another building.

    • by gweihir ( 88907 )

      That is the nuclear industry for you: Lying when they open their mouths.

    • Modular means the main reactor components can be mass-produced and shipped to the site, unlike current, meaning 1970's produced, reactors that are all assembled on-site.

      You are probably thinking of micro-reactors, which are self-contained and roughly the size of a small passenger bus. There are a few of those designs getting ready for deployment.

      https://en.wikipedia.org/wiki/... [wikipedia.org]

  • 1 solar/wind watt does not equal 1 nuclear/gas/coal watt.

    You have to normalize the numbers. For wind/solar that depends on location.

    Capacity factor is used. Nuclear averages about 93%, in the lower 48 USA average solar is 24.7%, Massachusetts is 15.6%, in Germany about 11.1%. Canada is even lower. America is also massively different, solar in the southwest is going be better than northeast.

    So for x watts of generation, nuclear needs 1.0753x watts, solar needs 4.04x watts solar in Germany needs 9.009x watts,

  • Westinghouse did not reveal how much the first reactor would cost, but said later units would cost about $1 billion.

    So... Elon could have bought 44 of these instead of Twitter. Don't know which would be the better investment, but am guessing the ROI would be about the same. :-)

  • The information on this design is limited but I'd say this thing barely qualifies as an Small Modular Reactor (SMR) if it does at all. It just looks like a sized down reactor fully integrated into a building and looks to be far to large to transport. My understanding of SMRs is that they are designed to be small enough to be transported, so that the reactors can be manufactured in a separate main factory and then shipped to various power plants where they will be used along with other reactor modules at t

Always draw your curves, then plot your reading.

Working...