Antinuclear

Australian news, and some related international items

Dr Arjun Makhijani explains why Small Modular Nuclear Reactors (SMRs) are doomed to fail

scrutiny-Royal-Commission CHAINPUBLIC HEARING, SA NUCLEAR FUEL CYCLE ROYAL COMMISSION DR ARJUN MAKHIJANI, Institute for Energy and Environmental Research ADELAIDE , THURSDAY, 1 OCTOBER 2015

Excerpt “…….the core idea of an SMR is that you have smaller reactors. Of course you lose the economies of scale, reactors are big because cost of  materials goes according to surface area, and power production goes according to volume, and the larger the reactor the smaller the material needed per kilowatt.

That is the theory and that is why there were small reactors in the fifties, they were proposed and we went to bigger reactors because they were cheaper, all other things being equal. So you go back to smaller reactors, the underlying technology will tell you that the costs per kilowatt, in terms of materials and labour, the number of wells you need per kilowatt, the amount of steel you need per kilowatt will all go up.

The proposal is that all of these costs would be offset by assembly line manufacturing. So you won’t have to set it up on site. And in theory it is a fair idea to evaluate and you ask what is the size of the assembly line you need? And who is going to create this assembly line and the required supply chain, the vessels and the pumps and valves and all of it? So if you look at what the Department of Energy has said, what the industry itself has said is that you can’t – so you are really displacing the heavy capital cost upstream from the reactor sites……

so now instead of having a 10 billion dollar problem, you have got a 50 or a 100 million dollar problem because to .SA Nuclear 01.10.15 P-431 Spark and Cannon set up a supply chain for say 100 or 150 reactors a year, you need that scale of investment……

you need a supply chain investment that is about the same order of kind of an assembly line for airbuses or (indistinct) So it’s very, very huge. So who is 5 going to make all of these orders that will cause some private party to make that investment in the assembly line? With airbuses we know they get advance orders of hundreds of aircraft and they set up their assembly lines. The answer to that question is, no one other than governments…….

SMRs Australia

How you would handle such a system from a regulatory point of view is 15 mysterious to me because when you have assembly lines, as I note in my paper, you have recalls. Today we have got an 11 million car recall, one of the most reputable companies from perhaps the most technologically reputable country in the world, Germany. What are we going to do if we have 2,000 assembly line reactors that are found to have a fault through design? By design I mean 20 as not properly conceived, or through some cover up, like what happened with Volkswagen. How are we going to deal with it? Are we going to shut them down? Are we going to send them to the manufacturer? Are we going to – it’s unclear…..

the fine 25 print of small module reactors is much, much more complicated economically and in terms of the risks and investments, than their performance have led you to believe. That’s why they’re not – I mean I think – at least two of the four companies that are embarked on it, are already not pursuing it in the United States. Fallen apart before anything was built…. ” http://nuclearrc.sa.gov.au/app/uploads/mp/files/videos/files/151001-topic-4-day-2-transcript-full.v2.pdf

Advertisements

October 2, 2015 - Posted by | NUCLEAR ROYAL COMMISSION 2016

1 Comment »

  1. More info here:

    The Forgotten History of Small Nuclear Reactors

    Economics killed small nuclear power plants in the past—and probably will keep doing so
    By M.V. Ramana

    http://spectrum.ieee.org/energy/nuclear/the-forgotten-history-of-small-nuclear-reactors

    Comment by CaptD | October 3, 2015 | Reply


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: