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Nuclear Power

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Comments

  • Closed Accounts Posts: 74 ✭✭fullgas


    From that site http://nextbigfuture.com/2008/04/concentrated-solar-power-balloons.html


    Most of the danger with solar rooftop is the rooftop part , working at height retrofitting stuff is more dangerous than installing it at ground level.

    As for hydro , how many deaths have there been in the last 35 years in Europe ? ( since you like to blame Russian accidents on their culture you can't include them )

    Wind deaths - be interesting to see the stats to see what size /age / region is most dangerous ?

    What's the point in providing that figure? There is hardly any possibility of an increase in hydro energy production in Europe.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    fullgas wrote: »
    What's the point in providing that figure? There is hardly any possibility of an increase in hydro energy production in Europe.
    What about the stuff in Iceland / Norway ?

    But it's more to show that there might be some selective choosing of stats. cba looking it up because I reckon that nuclear diverts spending from health that isn't counted in the health effects.

    In the past IIRC some studies on wood biomass used the death rate for lumberjacks instead of taking into account that a lot of it would come from coppiced willow.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    From the wind thread
    - this could be talking about reactors or backup cooling system generators or transformers.
    Chloe Pink wrote: »
    “We see
    turbine
    fires around the world when it gets very
    , very windy
    ,” he said. “They usually shut themselves off as a safety feature if the
    wind
    gets too much. But sometimes there is another failure.

    It can catch on fire for a whole multitude of reasons. It can be the mechanism going into overdrive. It can be to do with the connections or oil catching alight.



    A review of this weeks nuclear industry news . ( there are

    The San Onofre Nuclear Generating Station has been offline for more than one year since a radioactive leak from a damaged steam generator tube January 31, 2012. Southern California Edison said Monday it submitted a draft plan to the Nuclear Regulatory Commission to restart one of the plant's two units.


    This statement sums up my view of how the nuclear industry prepares for the worst case (except maybe the word unwilling especially in the purse strings dept.)
    “We must sincerely accept that we were unable to draw on human wisdom to prevent it.”


    Study says famed cyberattack against Iran nuclear plant is an ‘act of force’


    UK nuclear plans set back 5 years and first plant already has another £2 Bn added to the price tag.
    That didn't take long did it ?
    Government extends new nuclear power station timetable by five years, confirms first plant will cost up to £14bn


    The plant, about 20 miles north of Omaha, has been offline since April 2011. The reactor was shut down for a scheduled refueling process, kept cold because of flood concerns and eventually put under federal oversight because of a host of other safety problems.


    UK Torness two nuclear plant taken offline due to unplanned outage ( It's the jellyfish one )



    Tokyo Electric Power Co.'s president said it would be impossible to restart reactors at the Kashiwazaki-Kariwa nuclear power plant soon, damaging the utility's financial plans.


    U.S. Renewable Energy Production Now Tops Nuclear Power:P
    But the trend lines tell the story: Wind energy, for instance, grew 89% while electricity production from nuclear power plants fell 4%.


  • Moderators, Science, Health & Environment Moderators, Society & Culture Moderators Posts: 3,372 Mod ✭✭✭✭andrew


    No
    http://cen.acs.org/articles/91/web/2013/04/Nuclear-Power-Prevents-Deaths-Causes.html

    Here's an article about a paper which has shown that Nuclear power has saved many more lives than it has killed, just taking into consideration the effect it has had on air pollution.


  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    andrew wrote: »
    http://cen.acs.org/articles/91/web/2013/04/Nuclear-Power-Prevents-Deaths-Causes.html

    Here's an article about a paper which has shown that Nuclear power has saved many more lives than it has killed, just taking into consideration the effect it has had on air pollution.
    <sarcasm>Ah but don't you realise the choice between fossil fuels and nuclear is a "false dichotomy"? We should all be floating solar ballons and osmotic membranes and underground steam caverns</sarcasm>:rolleyes:
    cba looking it up because I reckon that nuclear diverts spending from health that isn't counted in the health effects.
    I could accept this if you or anyone else in the environmental-left recognised that nuclear power diverts fossil fuels from the grid - and has done so to a very large degree for a very long time. And in doing so, it has saved lives. Furthermore if the environmental-left were not engaged in a disinformation campaign, more fossil fuel power plants could be directly replaced by nuclear power plants.

    If you accept that, I would be willing to debate the issue of funds diverted from health spending. Unless you are willing to recognise the environmental-lefts role in promoting fossil fuels, it's just more:
    selective choosing of stats
    Though frankly I think its BS because it's making a number of flawed assumptions.


  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    As for hydro , how many deaths have there been in the last 35 years in Europe ? ( since you like to blame Russian accidents on their culture you can't include them )
    If you want to limit the figures to deaths that occured in Europe over the last 35 years, excluding the former Soviet Union, then you also have to exclude Chernobyl and Fukushima (which I imagine is included in the figures I posted).

    Do that and you have a death rate of approximately 0 mortalities per TW/h.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    Lifetime costs BTW
    http://www.renewableenergyworld.com/rea/news/article/2013/04/powering-world-with-nuclear-would-cost-quadrillion-dollars-says-expert-are-renewables-only-option
    "We would need 10,000 nuclear plants to provide the majority of global energy need," explains Tickell. "The cost to the tax payer for one single reactor would be $100 billion. To build 10,000, it would cost 1 quadrillion dollars. The nuclear industry is in state of desperation."

    Also there is the problem of how to fuel 10,000 plants when we aren't mining enough fuel for less than 500 at the moment.

    Nuclear is more expensive when you have to retire plants early.
    http://www.power-eng.com/news/2013/04/02/russia-might-decommission-7-gw-of-nuclear-power-early-by-2019.html
    Russia might decommission 7 GW of nuclear power capacity ahead of schedule in the period to 2019, but gradually replace it with new capacity,
    ...
    All of these units have RBMK light-water graphite-moderated reactors that are beginning to have problems with graphite stacks, which are deforming earlier than anticipated.


    After Fukushima what are the chances of a Nuclear Plant being flooded especially after it's already had a flood defence upgrade ? (nice picture in the link)
    http://boingboing.net/2011/06/28/nebraska-nuclear-pow.html
    The Army Corps of Engineers expects the river to crest no higher than 1,008 feet elevation, and the flood barriers would protect the power plant to 1,010 feet. But that doesn't leave a lot of margin for error. If rainfall becomes extraordinarily heavy again, the river could crest higher.
    NRC estimated there was a 100% chance of reactor core damage caused by a flood rising above 1010 feet.


  • Closed Accounts Posts: 545 ✭✭✭Chemical Burn


    No
    People use ridiculous unrelated events to scaremonger against nuclear power .. like ohhh North Korea etc.


  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    So in your view the Tsunami didn't affect Japan's economy as much as not having nuclear power on line or other events.
    If you are claiming that the need to import vast quantities of fossil fuels (which they had to do because they took their nuclear plants offline) didn't have anything to do with the subsequent trade deficit, that would be quite an interesting claim.

    But its refreshing that you actually admit something else happened that day because the sense I've been getting is that environmental leftist boneheads like Greenpeace et. al. are writing tomorrows history books, the event will be recorded something like this:
    On the 11th of March 2011, there was a little earthquake and some flooding in Japan, after which the Fukushima 1 reactor just blew up for no reason, casting a big black scary cloak of radioactive DEATH over the countryside. 15,882 people died. It was the biggest nuclear disaster since Chernobyl which killed 500 million
    Lifetime costs BTW
    http://www.renewableenergyworld.com/rea/news/article/2013/04/powering-world-with-nuclear-would-cost-quadrillion-dollars-says-expert-are-renewables-only-option

    Also there is the problem of how to fuel 10,000 plants when we aren't mining enough fuel for less than 500 at the moment.
    Assuming for the sake of argument that this is true, try ro do the same job with wind tubines, or solar power, including your photovaltaic (sp) solar ballons. :D
    For added challenge, assume that the Chinese get sick of trashing their environment with rare earth metal processing to support boneheaded Western renewables programmes. Or that they simply run out of the stuff. Solar power also relies on rare earth metals as do the lithium batteries in those Green favourites, the hybrid and electric car.

    In China, the true cost of Britain's clean, green wind power experiment: Pollution on a disastrous scale.

    Nuclear is more expensive when you have to retire plants early.
    http://www.power-eng.com/news/2013/04/02/russia-might-decommission-7-gw-of-nuclear-power-early-by-2019.html
    Yet, from your own article ...
    All of these units have RBMK light-water graphite-moderated reactors that are beginning to have problems with graphite stacks, which are deforming earlier than anticipated.
    GOOD! The RBMK reactor was the type of reactor used at Chernobyl-4 and it never should have been used, anywhere, in the firstplace. Indeed, it was never used outside the Soviet Union because its so dangerous. Of course the Chernobyl accident would still have been avoided had the test they were doing been planned and executed in a competent fashion, but, it being the Soviet Union, the whole thing was mired in secrecy, borderline corruption and absolutley breathtaking incompetence.

    As an ardent pro-nuke, I've always condemned the RBMK reactor design and I'm delighted they have to be consigned to history sooner than expected, for any reason.

    Yet you come on saying premature retirmement makes nuclear power "too expensive" and to support that you cite a reactor design that any nuclear advocate or Westen nuclear regulator will tell you never should have been built? You just made that argument for me, nearly as strong as I could have! :rolleyes:
    After Fukushima what are the chances of a Nuclear Plant being flooded
    Presumably the same as before Fukushima? :rolleyes:


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    SeanW wrote: »
    If you are claiming that the need to import vast quantities of fossil fuels (which they had to do because they took their nuclear plants offline) didn't have anything to do with the subsequent trade deficit, that would be quite an interesting claim.
    I've seen varying figures

    http://www.guardian.co.uk/environment/2013/mar/06/fukushima-nuclear-decommissioning-plant-safety
    Now, Japan is about to embark on a clean-up that could cost at least $100bn – on top of the cost of compensating evacuees and decontaminating their abandoned homes.
    Figure for $54Bn to buy up the contaminated land.

    http://www.bbc.co.uk/news/world-asia-17219008
    But the country's national and local authorities believe the reconstruction will actually cost more than 23 trillion yen (£181bn) over a decade.

    It's still not clear if Fukushima will cost more than all the other tsunami damage combined.

    https://www.nytimes.com/2013/04/03/business/global/japanese-cabinet-proposes-energy-sector-overhauls.html?src=twrhp
    Mr. Abe instructed Industry Minister Toshimitsu Motegi to submit the power measure to the Parliament as soon as possible. He also urged Mr. Motegi and Environment Minister Nobuteru Ishihara to work together on strengthening environmental impact assessments to promote use of environmentally friendly and high-efficiency thermal power.

    For added challenge, assume that the Chinese get sick of trashing their environment with rare earth metal processing to support boneheaded Western renewables programmes. Or that they simply run out of the stuff. Solar power also relies on rare earth metals as do the lithium batteries in those Green favourites, the hybrid and electric car.
    LOL

    Solar doesn't rely on rare earths. Some types of solar do. Dye sensitized cells use organic dyes and white paint. I've posted before about cells made from wood. Cheap printable solar using common materials from a well established company ? http://ibmresearchnews.blogspot.ie/2012/08/shedding-light-on-new-frontiers-of.html
    So far, the tests of our Cu2ZnSn(S,Se)4 (made of readily available copper, zinc, and tin, and referred to as CZTS) thin-film devices have achieved a world-record PV solar-to-electric power conversion efficiency of 11.1 percent (10 percent better than any previous reports) for this class of semiconductors. And it can be manufactured by simple ink-based techniques such as printing or casting.

    Our CZTS PV cells could potentially yield up to 500 GW/year – getting closer to the Terawatt levels of renewable electricity the planet needs.

    Rare earths aren't rare, now that demand has gone up they are being mined in other parts of the world. Yes they give slight gains in efficiency with generation but thermal and hydro plants operate without them and wind can too.


    Hybrid cars aren't that much an improvement on a good diesel. And well to wheel of fully electric isn't great, the advantages of fully electric are mainly the different tax rates and the ability to use electricity generated from non-fossil fuel sources.

    Yet you come on saying premature retirmement makes nuclear power "too expensive" and to support that you cite a reactor design that any nuclear advocate or Westen nuclear regulator will tell you never should have been built? You just made that argument for me, nearly as strong as I could have! :rolleyes:
    If it were the only type then maybe
    How many examples would I have to give to convince you of the true cost of nuclear ?
    Japan / Germany / Italy
    Belgium / Switzerland
    Presumably the same as before Fukushima? :rolleyes:
    if so then it means lessons weren't learnt



    How is Germany doing with nuclear ?

    http://www.pv-magazine.com/news/details/archive/2013/april/beitrag/germany--power-exporter-even-with-fewer-nuclear-plants_100010756/
    Germany imported 43.8 TWh of power via the European electricity grid in 2012, costing the country €2.3 billion. At the same time, countries like Austria, the Netherlands and Switzerland bought 66.6 TWh of power from Germany to the tune of about €3.7 billion. The surplus was thereby €1.4 billion in the German coffers.


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  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    If it were the only type then maybe
    How many examples would I have to give to convince you of the true cost of nuclear ?
    Japan / Germany / Italy
    Belgium / Switzerland
    Don't bother, because most likely it would be trivial matters blown totally out of proportion.
    LOL
    Is that all you have to say about the environmental and other costs of renewables? I'm reasonably certain that if these toxic waste lakes and other issues were the result of nuclear plant construction, you would be all over them. More than that, that you would likely blow it out of proportion.

    As it stands, you have completely failed to address the issue of these problems with current generation renewables. "LOL" indeed.
    Mr. Abe instructed Industry Minister Toshimitsu Motegi to submit the power measure to the Parliament as soon as possible. He also urged Mr. Motegi and Environment Minister Nobuteru Ishihara to work together on strengthening environmental impact assessments to promote use of environmentally friendly and high-efficiency thermal power.
    Translation: we're going to import vast quantities of gas.
    Solar doesn't rely on rare earths. Some types of solar do. Dye sensitized cells use organic dyes and white paint. I've posted before about cells made from wood.
    Underground steam caverns. Osmotic membranes. Solar panels made of wood. You certainly have a fertile imagination, but like Steorns claim to have solved the energy problem by breaking the laws of physics, I suspect that the reason most of this stuff only exists on paper or in a laboratory, is because it's total bunk.

    Meanwhile nuclear energy is a current, viable alternative to fossil fuels. More to the point, it has been for many decades.
    Rare earths aren't rare, now that demand has gone up they are being mined in other parts of the world.
    No doubt with the same environmental costs.
    if so then it means lessons weren't learnt
    Memo to Capt'n Midnight: your sarcasm detector is on the fritz. :rolleyes:
    Remind me, is this the same Germany that's currently on a coal fired power plant building spree just behind that of China? That is tearing up vast chunks of East Germany to get lignite (brown coal)

    (all thanks to the environmental left).

    Like Japan, where gas is looking likely to be used as a drop in replacement for nuclear?

    Or how about closer to home, where Ireland built the Moneypoint coal fired power plant as a direct response to the actions of the environmental-left at Carnsore point?

    One point you have failed to deal with is that there is a choice to be made in many cases between nuclear energy and fossil fuels. That choice is real, it is unavoidable, and it is made as a matter of routine.

    Yet despite the facts of history and today being crystal clear, when I point this out I get accused of spreading a "false dichotomy" despite the reality clearly showing that it is the truth.

    You have had the option of either accepting or explicitly demolishing my central point which is simply this: for a large portion of our power needs, we must choose between nuclear and fossil fuels, i.e. coal and gas. The environmental-left clearly demonstrates a very strong preference for fossil fuels and are key, central forces in encouraging nations (Ireland, Germany, Japan etc) to embrace coal and gas with unprecedented zeal in their bid to eliminate nuclear power. They do this in spite of being the loudest voices claiming that we're going to all going to be burned to a crisp or washed away unless we radically change our lifestyles to avoid the catastrophe of global warming.

    Both historical and current facts clearly and unimpeachably support this claim. Except for the ability to spoof nonsense about wooden solar panels and osmotic membranes and other Steorn-esque drivel, you have absolutely nothing.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    SeanW wrote: »
    Don't bother, because most likely it would be trivial matters blown totally out of proportion.
    Trivial as in apart from Japan they will be phasing out Nuclear power.

    Translation: we're going to import vast quantities of gas.
    And ?
    Gas like Nuclear is a transitional power source.

    Underground steam caverns. Osmotic membranes. Solar panels made of wood. You certainly have a fertile imagination, but like Steorns claim to have solved the energy problem by breaking the laws of physics, I suspect that the reason most of this stuff only exists on paper or in a laboratory, is because it's total bunk.
    Steorn, the guys selling perpetual motion ?
    All the stuff I've posted have at the very lease been demonstrated working in a lab.

    Meanwhile nuclear energy is a current, viable alternative to fossil fuels. More to the point, it has been for many decades.
    Peak Uranium vs. continually falling costs on the renewable side
    No doubt with the same environmental costs.
    Do you even read my posts ?
    You missed the bit about them not being essential
    Memo to Capt'n Midnight: your sarcasm detector is on the fritz. :rolleyes:
    So tell me what lessons were learnt from Fukushima by the nuclear industry that weren't bleedin' obvious already.

    Or how about closer to home, where Ireland built the Moneypoint coal fired power plant as a direct response to the actions of the environmental-left at Carnsore point?
    For the Nth time, we get more energy from wind than from coal.


    One point you have failed to deal with is that there is a choice to be made in many cases between nuclear energy and fossil fuels. That choice is real, it is unavoidable, and it is made as a matter of routine.
    The actual choice is between Nuclear + Fossil or Renewables + Fossil unless you are lucky enough to have a lot of hydro.

    Because as a general rule peaking plants are fossil, and usually gas.


    Both historical and current facts clearly and unimpeachably support this claim. Except for the ability to spoof nonsense about wooden solar panels and osmotic membranes and other Steorn-esque drivel, you have absolutely nothing.
    Economics dear boy, nuclear is far too expensive for base load, especially when you include the whole lifetime costs.


    One very important consequence of renewables is that they reduce the peak cost of electricity when they are available. Overall this means that nuclear can't compete on sunny or windy days.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    Rat Chase Again Bedevils Fukushima Nuclear Plant


    http://www.kentucky.com/2013/04/04/2585766/paducah-nuclear-plant-avoids-layoffs.html
    Commercial enrichment operations at the plant have been uncertain for some time as the market for nuclear technology dwindles. Contracts signed in 2012 with multiple parties to re-enrich high-assay depleted uranium hexafluoride, called tails, into low-enrichment uranium end May 31, and officials have been alluding to plans that the plant will shut down.


    SEOUL, April 4 (Yonhap) -- A nuclear reactor on South Korea's southeast coast was shut down Thursday afternoon, but the cause was not immediately known, plant operators said.


    Japan to Become Largest Solar Market After China, Between 6GW and 9GW this year.


  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    Steorn, the guys selling perpetual motion ?
    All the stuff I've posted have at the very lease been demonstrated working in a lab.
    You have to admit, when you talk about wooden solar panels, osmotic membranes, solar ballons and the like, you cannot be surprised that a reasonable person is reminded of other bunk like Steorn.
    Do you even read my posts ?
    You missed the bit about them not being essential
    Oviously not, otherwise rare earths would not be used as much as they have to make wind turbines (neodymium) and solar (selenium at least, and toxins like cadmium).
    Rare earths aren't rare, now that demand has gone up they are being mined in other parts of the world.
    Why is that? Becuase demand has soared for some reason other than electric cars and boneheaded renewables programmes? Colour me skeptical.
    Hmm, I wonder if there's a reason for that ...
    Grid parity, the point at which photovoltaic electricity is equal to or cheaper than grid power, is achieved first in areas with abundant sun and high costs for electricity such as in California and Japan.

    I don't know if you've noticed but there's a difference between the Californian climate and that of ... oh ... say ... Ireland?
    So tell me what lessons were learnt from Fukushima by the nuclear industry that weren't bleedin' obvious already.
    If you want a more meaningful answer, I suggest you ask nuclear industry insiders and nuclear regulators.
    For the Nth time, we get more energy from wind than from coal.
    THAT'S NOT WHAT I AKSED YOU! I asked you specifically about why the Moneypoint power station was built and has been operating for a very long time - I blame the environmental left and believe that it never should have happened. I didn't ask you how much power we got from Moneypoint vs wind or anything else.

    I additionally asked you to explain why Germany - which I contend is at the behest of its environmental left - is on a coal fired power plant building spree the likes of which are unprecedented in the Western world. They have a choice between nuclear and fossil fuels, so they're choosing fossil fuels with a vengance because the eco-left told them to.
    One very important consequence of renewables is that they reduce the peak cost of electricity when they are available!!!!!!! Overall this means that nuclear can't compete on sunny or windy days.
    That's the point, they are unreliable and inconsistent. So you subsidise the bejesus out of these things, and after you've powed a fortune into them, they work great ... when the weather is cooperating :rolleyes:
    The actual choice is between Nuclear + Fossil or Renewables + Fossil unless you are lucky enough to have a lot of hydro.
    Oh dear, you'd better run over to France then (90%+ non-fossil) and tell them they're living on another planet ... oh wait, that's you :rolleyes:

    Again, 90%+ non-fossil power, mostly nuclear (~75%), some renewables and the remainder (<10%) in fossil fuels. If the environmental left had their way, they'd flip that on its head and increase the share of fossil fuels from <10% to something dramatically higher. Problem for them is that the French aren't that boneheaded.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    SeanW wrote: »
    You have to admit, when you talk about wooden solar panels, osmotic membranes, solar ballons and the like, you cannot be surprised that a reasonable person is reminded of other bunk like Steorn.
    Steorn is different, it's more like nuclear in that they haven't produced working examples of new technology.

    All the other stuff I've listed exists. Not all of it will be commercialised.

    rare earths Japanese have found deposits on the sea bed that are 1000 times more concentrated than on land.

    If you want a more meaningful answer, I suggest you ask nuclear industry insiders and nuclear regulators.
    I've shown that predictable problems are still happening. I cba checking up on the promises made because so far there is a whole litany of failed inspections.

    And let's be clear, this is how the nuclear industry behaves when in the spotlight and fighting for it's existance.


    Fossil fuel[/quote] If you can explain how nuclear can replace most fossil fuel then I'll listen. Until then it's a temporary fact of life.



    That's the point, they are unreliable and inconsistent. So you subsidise the bejesus out of these things, and after you've powed a fortune into them, they work great ... when the weather is cooperating :rolleyes:
    The exact same is true of nuclear.
    except with nuclear you have can loose huge %'s of your generating capacity without warning and for times varying from hours to years
    Oh dear, you'd better run over to France then (90%+ non-fossil)
    Also France have more controllable reactors then others, slightly less efficient. Also they export at night. Also and this is the rub, why aren't they building more of them ??


    So overall

    What new nuclear technologies have there been since the 1960's ?

    What large scale proven cost reductions have there been in nuclear technologies ?

    Peak uranium ?

    If nuclear power is so cheap why are there continual screw ups caused by penny pinching and delaying upgrades ?


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    Here is a survey for North East USA , with more costings than I've ever seen from any nuclear proposal

    http://dx.doi.org/10.1016/j.jpowsour.2012.09.054
    Our model evaluated over 28 billion combinations of renewables and storage, each tested over 35,040 h (four years) of load and weather data. We find that the least cost solutions yield seemingly-excessive generation capacity—at times, almost three times the electricity needed to meet electrical load. This is because diverse renewable generation and the excess capacity together meet electric load with less storage, lowering total system cost.
    ...
    but for simplicity we here conservatively do not assume load management but fill any remaining gaps of power with fossil generation.
    ...
    We discounted future renewable generation at 12%, did not project any increase in fossil fuel prices, eliminated tax subsidies for renewables but not traditional generation, and did not project any technology breakthroughs for renewables, all of which raise the comparative cost of renewable power.
    ...
    Counter-intuitively, when we increase the requirement from 90% to 99.9%, less storage and significantly less fossil backup capacity are needed. This is because, to meet 99.9% of hours, more renewable generation is required from more diverse sources.
    ...
    We find that 90% of hours are covered most cost-effectively by a system that generates from renewables 180% the electrical energy needed by load, and 99.9% of hours are covered by generating almost 290% of need. Only 9–72 h of storage were required to cover 99.9% of hours of load over four years.
    ...
    Today we build dispatchable generation, and design for enough capacity to meet peak load plus a reserve margin. If we applied the findings of this article, in the future we would build variable generation, designing for enough capacity to make electric load for the worst hours, and as a side effect we will have enough extra electricity to meet thermal loads.


  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    Steorn is different, it's more like nuclear in that they haven't produced working examples of new technology.
    Nuclear energy exists. Steorns' "we've broken the laws of physics" whatever it was, does not.
    rare earths Japanese have found deposits on the sea bed that are 1000 times more concentrated than on land.
    How they going to get them down there? Go for a dive? Additionally, they will still have to be processed and even I accepted (I do not) that the mountain of toxic sludge result in processing would be reduced by a commensurate amount, that benefit would be quickly lost given the dramatically increased demand provoked by some boneheaded worldwide renewables programme.
    I've shown that predictable problems are still happening. I cba checking up on the promises made because so far there is a whole litany of failed inspections.
    Which, if true, only proves that there is a strong regulatory framework, one of many key planks missing in the Soviet Union for example.
    Fossil fuel If you can explain how nuclear can replace most fossil fuel then I'll listen. Until then it's a temporary fact of life.
    I don't have to: the French have already done it and the Irish government might have got a good start on it in the 1970s but for the actions of the environmental-left.
    Except with nuclear you have can loose huge %'s of your generating capacity without warning and for times varying from hours to years
    Not a problem when the reactors are of an appropriate size relevant to the market are used. For example, a bog standard 1000MW or so Light Water Reactor in the United States, no big deal if one goes down because the market is absolutely humongous, the grid probably has many times that in spinning reserve.
    Also France have more controllable reactors then others, slightly less efficient. Also they export at night. Also and this is the rub, why aren't they building more of them ??
    They aren't? :rolleyes: That's news to EDF, that is currently building an EPR for Flamanville-3.
    Here is a survey for North East USA , with more costings than I've ever seen from any nuclear proposal

    http://dx.doi.org/10.1016/j.jpowsour.2012.09.054
    You're forgetting some key points, I fear:
    1. The Northeast United States is a huge, varying region sizewise that has lots of wind, tidal and solar. Ireland is not, we have a unreliable wind 'asset' that has a proven negative correlation between supply and demand (i.e. when we need electrcity the most desperately, during anti-cyclones such as the big freeze of 2010) the wind will not co-operate. Tidal maybe, but not there yet, I doubt.
    2. It also, like much of the world, has very warm summers, so if solar energy can be made viable, then it makes sense to use it because there's likely to be a very strong correlation between air-conditioner use and solar radiation. Ireland does not have this peak problem.
    3. Using unreliable renewables continuously, i.e. regardless of weather conditions, requires obsecene levels of storage. That means: if you want to store wind energy, for any reason, you need something like a massive mountain valley that you can flood with pumped hydro. Other things are proposed as solutions, such as storing solar energy in energy crops.
    In relation to the last point, have a look at this video showing an experiement by the University of Kassel in Germany.

    As you might like to know, they proved that renewables could supply any given amount of energy (1/100th of 1% IIRC) at any given time.

    The chief problem was that the video started by the assumption that there was going to be a phase out of both nuclear and coal mining. We now know that this will not happen, yes to the nuclear phase out, but coal consumption, rather than being phased out is accelearting at an unprecendented rate. The second problem arose near the end, in that their approach relied on storing solar energy in biogas energy crops, and wind power in pumped hydro. So to go from 0.01% to 100% of the supply for Germany, you would need 10,000 mountain valleys, and 10,000 times as much land to be pressed into service for energy crops. Much of it, I feared, would be taken from nature reserves. I hoped against hope that I was wrong, and sense would prevail. It didn't. I was right about the potential environmental destruction that would follow from this madness, but to a far greatet extent than I ever dreaded.

    From Der Spiegel:
    The Costs of Going Green
    One would assume that ecology and the Energiewende, Germany's plans to phase out nuclear energy and increase its reliance on renewable sources, were natural allies. But in reality, the two goals have been coming into greater and greater conflict. "With the use of wood, especially," Kaiser says, "the limits of sustainability have already been exceeded several times." To understand what this really means, one needs to know Kaiser's background: For several years, he has been the head of the climate division at Greenpeace Germany's headquarters in Hamburg.


    same article:
    Encroaching on Nature Reserves
    The opposition in Berlin has so far contented itself with criticizing Merkel, believing that her climate policies have failed and that she has steered Germany's most important infrastructure project into a wall. Granted, neither the center-left Social Democratic Party (SPD) nor the Greens are part of the ruling coalition at the federal level, but they do jointly govern a number of Germany's 16 federal states. And, when forced to choose between nature and renewable energies, it is usually nature that take a back seat in those states.
    It was in this way that, in 2009, Germany's largest solar park to date arose right in the middle of the Lieberoser Heide, a bird sanctuary about a 100 kilometers (62 miles) southeast of Berlin. Since German reunification in 1990, more than 200 endangered species have settled in the former military training grounds. But that didn't seem to matter. In spite of all the protests by environmentalists, huge areas of ancient pine trees were clear cut in order to make room for solar collectors bigger than soccer fields.
    A similar thing happened in Baden-Württemberg, even though the southwestern state has been led for almost two years by Winfried Kretschmann, the first state governor in Germany belonging to the Green Party. In 2012, it was the Greens there who passed a wind-energy decree that aims to boost the number of wind turbines in the state from 400 to roughly 2,500 by 2020. And in the party's reckoning, nature is standing in the way.
    The decree includes an exemption that makes it easier to erect huge windmills in nature conservations areas, where they are otherwise forbidden. But now this exception threatens to become the rule: In many regions of the state, including Stuttgart, Esslingen and Göppingen, district administrators are reporting that they plan to permit wind farms to be erected in several nature reserves.
    But apparently even that isn't enough for Claus Schmiedel, the SPD leader in the state parliament. Two weeks ago, he wrote a letter to Kretschmann recommending that he put the bothersome conservationists back into line. Schmiedel claimed that investors in renewable energies were being "serially harassed by the low-level regional nature-conservation authorities" -- and complained that the state government wasn't doing enough to combat this.


    It costs a fortune, some say the "energy revolution" in Germany will cost 1 trillion dollars, i.e. $1,000,000,000,000. Most of this will be paid for by consumers, including recipient of the Hartz IV welfare scheme who are already feeling the pain.


    It has also caused massive power fluctuations that cause serious damage to industrial users, with damage from an unstable grid costing upwards of €10,000 each time to repair wrecked machinery, write off destroyed goods in production and possibly even compensation for injuries to workers.
    Sudden fluctuations in Germany's power grid are causing major damage to a number of industrial companies. Germany is undergoing a transition to renewable energy which is wreaking havoc on the German power grid. Spikes and dips in power are becoming a regular occurrence.
    Grid Instability Has Industry Scrambling for Solutions

    German Chancellor Merkel set the ambitious goals of boosting renewable energy to 35 percent of total power consumption by 2020 and 80 percent by 2050. Germany is phasing out their nuclear power reactors by 2022.

    Some of these industrial companies are responding by brining online their own power generators to help minimize the risks.

    Some companies might be forced to leave Germany if the government doesn't deal with the issues fast.
    The Cause

    It was 3 in the morning when the machines suddenly ground to a halt at Hydro Aluminium in Hamburg. The Aluminum rolling mill's highly sensitive production line stopped so abruptly that the aluminum belts snagged causing significant damage.

    The reason behind this disaster: the voltage from the electricity grid weakened for a millisecond.

    After the shutdown, workers had to free half-finished aluminum rolls from the machines. Several hours elapsed before the machines could be restarted.

    The estimated cost was $12,300 USD (€10,000).

    In the following three weeks, the voltage weakened at the Hamburg factory two more times, each time for a fraction of second. No damage was done because the machines were offline both times. A lucky twist of fate.

    Power fluctuations could also lead to a plant fire and that would be expensive and threaten people's lives.

    If you want to talk about how nuclear power is "too expensive" you also have to talk about the cost of the mass-embrace of renewables that you claim is an alternative ... yeah, if you don't mind destroying your nature reserves, threatening the survival of bats and endagered birds, going hell for leather into coal/gas burning, spending $1,000,000,000,000 and threatening whats left of your industrial base with the consquences of an unstable grid ... But other than that it's a great idea :rolleyes:


    You couldn't make this stuff up, but I seriously fear that boneheaded environmental-leftist policy will threaten not only what remains of our first world lifestyle, but also whats left of our ecosystem.


  • Registered Users, Registered Users 2 Posts: 9,160 ✭✭✭SeanW


    No
    More on the realities of an embrace of renewable power from the Institute for Energy Research.

    It paints a much more sobering picture than your puff pieces about how great solar ballons and osmotic membranes etc are.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    SeanW wrote: »
    Nuclear energy exists. Steorns' "we've broken the laws of physics" whatever it was, does not.
    Steorn is a strawman that you brought up.

    Their claim to "over unity" is unproven and IMHO the whole thing was at best a publicity stunt.

    Similarily the nuclear industry has made many claims of "over unity" when it comes to enriching fuel and yes physics says it's possible. However, efficiency and economics matter.

    Yes you can make breeders
    The Japanese had one delivering energy to the grid for an hour.
    The French and Russians had better "success" getting up to 8% up time

    But there were massive problems in reprocessing and the breeding rate so far has been abysmal.

    The Shipping port one ran for several years and had only a tiny % more fuel than when it started.


    I still contend that there hasn't been any fundamentally new developments in nuclear power since the late 1960's. And that while the vast majority of the lab developments won't be commercialised the ones that do could easily pull the rug from under nuclear.




    Nuclear power can't follow demand. So for peaking you still need fossil fuel or pumped storage or lots of nuclear idling at off peak (like in France where they export to Italy/Germany). Pumped storage is expensive. Like really expensive. Like accountants get nervous when you mention it expensive.http://www.sustainability.ie/pumpedstoragemyth.html
    The total energy storage capacity of Turlough Hill is thus about 1.6 GWh ... or roughly one two-hundredth of one percent of Ireland's annual electricity demand.

    Now here's the thing, if you use fossil fuel or interconnectors to balance the day/night demand with nuclear then you can do the same with the day in / day out supply of renewables.


    PS. Portugal got 37% of it's electricity from hydro and 27% from wind so far this year. And they are exporting 6% of the electricity they produce.


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  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    This is interesting. Germany is moving to Coal.
    But it's nothing to do running out of capacity since they shut down the nukes.

    http://www.renewableenergyworld.com/rea/news/article/2013/03/what-do-struggling-gas-fired-plants-mean-for-renewables?cmpid=WNL-Friday-March15-2013
    “Gas-fired plants are stopped three days out of four,” Gerard Mestrallet, chief executive officer of GDF Suez, France’s former gas monopoly, said at a briefing on Feb. 28. “The thermal industry is in crisis. There is overcapacity.”
    ...
    Gas plants are also unprofitable in France, the Netherlands, Spain and the Czech Republic, according to data compiled by Bloomberg. In the U.K., they’re barely breaking even.
    ...
    Germany’s second-largest utility and Europe’s largest carbon dioxide emitter, churned out 11 percent more greenhouse gases last year as coal-fired plants increased production, according to the company’s annual report. Their profitability has been increased by the collapse in carbon permits to record lows, cutting the cost of burning coal.
    ...
    Utilities in Europe need to shut more than 30 percent of fossil-fuel fired stations to counter increasing production from wind turbines and solar, UBS analysts led by Per Lekander said in a note last week. Gas-fired plants will lead shutdowns, they said.
    ...
    In the meantime, plants are likely to keep closing until the mismatch between power and gas prices ends, analysts said.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    https://www.nytimes.com/2013/04/09/us/ex-regulator-says-nuclear-reactors-in-united-states-are-flawed.html?_r=0
    All 104 nuclear power reactors now in operation in the United States have a safety problem that cannot be fixed and they should be replaced with newer technology, the former chairman of the Nuclear Regulatory Commission said on Monday. Shutting them all down at once is not practical, he said, but he supports phasing them out rather than trying to extend their lives.

    And Iran say the earthquake hasn't affected their nuclear plant.

    The UK nuclear plant recently agreed may not go ahead now
    http://www.telegraph.co.uk/finance/newsbysector/energy/9978548/EDF-in-big-trouble-says-French-nuclear-expert.html
    Negotiations on a deal between EDF and the Government over the construction of a massive plant at Hinkley Point in Somerset are deadlocked because the two sides have failed to agree on a price for electricity and a range of other guarantees.
    ...
    Mr Schneider said that EDF with debts of €39bn (£33.3bn) might not have the cash to put into Hinkley and added: “It’s not certain it will go ahead.


    Tests of 45MW Reactor design went well, but it's still just a mock up so don't get too excited.
    http://www.elp.com/articles/2013/04/nuscale-power-conducts-fuel-test-for-small-modular-nuclear-react.html
    A full-length, full-power, electrically-heated fuel assembly mock-up with spacer grids was tested for a wide range of natural circulation flow rates with both uniform and cosine shape power profiles. The data, known as critical heat flux (CHF) data, is being used to define the limiting conditions for fuel performance and to validate NuScale's safety analysis computer codes.


  • Registered Users, Registered Users 2 Posts: 663 ✭✭✭Funk It


    This is interesting. Germany is moving to Coal.
    But it's nothing to do running out of capacity since they shut down the nukes.

    http://www.renewableenergyworld.com/rea/news/article/2013/03/what-do-struggling-gas-fired-plants-mean-for-renewables?cmpid=WNL-Friday-March15-2013

    Coal burn is cheap as hell these days, have been basically fired up near full capacity in the UK for the last year or so. A lot of profit is being made by generators at the moment.

    Only problem is that through the EU regulation, these coal power stations will have to come off line sooner than expected due to the current high usage. Replacing this capacity is where the problem lies. What was interesting about this is that the EU as a whole had reduced carbon emmissions last year, but the UK had increased, mainly due to the coal.


  • Registered Users, Registered Users 2 Posts: 23,140 ✭✭✭✭TheDoc


    No
    Massively in favour, although it's a silly hypothetical discussion as our nation is too regressive thinking to do anything about it.

    What normally doesn't get translated is the actual benefit to the end user. You and me. A Nuclear installation would obviously result in massive benefits in terms of longevity, security of a power source, minimal waste etc. But to me and you it would result in MASSIVELY reduced cost of electricity.

    While Ireland probably isn't an ideal candidate for Nuclear energy, a small facility could potentially be viable. The cost of having highly trained staff with a more highly advanced infrastructure is offset by the cost saved in waste and the likes.

    But on the flipside, as a small island, we have a real chance to become a global leader in renewable energy via water and wind energy. Unfortunately it is taking us ****ing ages to get anything of the sort going...


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,563 Mod ✭✭✭✭Capt'n Midnight


    TheDoc wrote: »
    What normally doesn't get translated is the actual benefit to the end user. You and me. A Nuclear installation would obviously result in massive benefits in terms of longevity, security of a power source, minimal waste etc. But to me and you it would result in MASSIVELY reduced cost of electricity.
    I'd hardly call a 24/7 price of 10p per unit wholesale as a Massive reduction. And that's not including the £160m a year subsidy that other generators in the UK have to pay to provide standby in case nuclear goes down. And that UK plant isn't going to be ready anytime soon.

    Compare that to our current wholesale prices are here ( 10c/unit ~ €116/MWh) http://www.sem-o.com/Pages/default.aspx

    I've posted in the Wind thread that there is ~ 750 of renewables in the pipeline here. (assuming 75% of the 1GW contracted is completed)

    AND 2GW of offshore wind ready to rollout - it's just a matter of economics ;)


    One of the big problems with solar that the electricity you produce may not cover what you would save by waiting until they get cheaper. LED lights have the same problem. It's not that solar isn't cost effective (Grid parity in Italy etc.) it's that it will be so much more cost effective in the foreseeable future.

    The industry roadmap is this
    http://www.greentechmedia.com/articles/read/top-chinese-manufacturers-will-produce-solar-panels-for-42-cents-a-wat
    Between 2009 and 2012, leading "best-in-class" Chinese c-Si solar manufacturers reduced module costs by more than 50 percent. And in the next three years, those players -- companies like Jinko, Yingli, Trina and Renesola -- are on a path to lower costs by another 30 percent.

    And then's stuff like this waiting in the wings
    http://gigaom.com/2013/04/08/tiny-wires-could-be-a-breakthrough-for-cheap-solar-panels/
    The company turns these nanowires into an ink, which can be layered onto basic solar panels and boost the efficiency of a standard panel by 25 percent.
    ...
    The company says the capital expensive of the ink and machines add 1 to 2 cents per Watt for the panels.


    Also peak uranium is a huge problem if when you consider that most of the easy ore has been found. Granite contains uranium but it takes a lot of fossil fuel energy to crush and transport the rocks. Using current technology there are limits beyond which it takes more energy to recover than it contains. In the US for example mining gets huge reductions in excise on fuel. It's not at the state yet where the cheapest way of getting uranium will be from phosphate tailings and coal ash. But expansion of the nuclear industry to back to the position it had before Chernobyl would mean that there would be no economic fuel after the next generation of reactors are build.

    Also decommissioning and waste repository and mine clean up would incur a huge energy debt.


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