*be sceptical - take nothing for granted!
Unless otherwise indicated all photos © Richard McKie 2005 - 2019

Who is Online

We have 265 guests and no members online

Translate to another language

Article Index

 

 
 
 

Nuclear Electricity

 

Nuclear power is a significant competitor to renewables generated electricity in many countries. Conventional nuclear power (fission) is growing rapidly and fusion sill holds promise for the future (as the resource is effectively limitless).

 

In much of the world nuclear generated electricity is already competitive with fossil fuels and less costly than wind or solar energy. Nuclear energy is expected to replace a modest proportion of fossil fuel generated electricity in many large economies during the first half of this century[28]. Prominent amongst these are China and India[29].

 

For example, the Republic of (South) Korea produced 343 TWh of electricity in 2004[30] of which 63 per cent came from conventional thermal sources, mainly coal, 36 per cent came from nuclear power, and a small amount came from hydro-power stations. But nuclear power is planned to steadily increase its share of the country’s net electricity generation. Korea already has four operating nuclear power stations containing a total of 20 nuclear reactors with a total capacity of 17,716 MWe. This exceeds the total electricity generation capacity in NSW[31].

Six additional reactors are under construction and a further six scheduled for completion by 2021 (total 14,800 MWe capacity). As a result, Korean manufacturers have developed proprietary IP and are beginning to market reactors internationally (with a target of 80 reactors exported by 2030)[32]. Similarly another major NSW coal customer Taiwan has two new 1,350 MWe reactors due to come on line this year.

A carbon mitigation strategy that attempts to achieve a zero increase in CO2emissions worldwide by 2030 (while not constraining economic growth) would need to achieve a very much faster growth in renewables than is presently the case (or is achievable in practice).

 

Implicit in the EIA projected worldwide growth in coal and gas consumption is the assumption that many new thermal power stations will be built. Many existing thermal power stations worldwide will also need replacement in this time frame.

 

Worldwide, the only practical and available alternative in a 20 year time-frame may be a very much faster growth in nuclear energy. If reliable, proven designs are adopted, allowing approvals to be streamlined, nuclear stations could have similar lead times to thermal stations.

 

A relatively modest threefold increase in present nuclear generation worldwide would meet the entire projected world electricity growth to 2030 and together with projected growth in renewables, return World fossil fuel consumption for electricity generation to 2006 levels.

 

 

World Electricity Projections to 2030 Present and with 300% Nuclear

 

 

image006
Source: IEA ibid; and the author

 
 

 

Simply replacing conventional thermal stations with nuclear stations as they retire may obviate the need to use the marginal renewables such as wind and solar when they are uneconomic without subsidy.

The following graphic shows the relative scale of energy flows in Australia.
 

image033

 

The dominance of coal and uranium are immediately apparent, as is the very small contribution presently made by renewables. The total of the carbon in the coal, gas and oil represents the Australian contribution to worldwide CO2 emissions.

The domesticity consumed component of this is so small that the domestic achievement of 20% renewables would be overwhelmed by a fractional increase in coal exports, as a result of the growing world demand for coal-fired thermal electricity.

 

A cessation of Australian coal exports might make a greater contribution to reduced world CO2 release. This would result in an increase in the world coal price, followed by accelerated development of coal projects in other countries to meet the growing demand.

This may be marginally effective as a higher coal price could be expected to accelerate the adoption of nuclear power, particularly by major NSW coal customers[33]; all of which have a high and growing nuclear capacity. But such a policy would have a serious short to medium term impact on the Australian economy (particularly in NSW[34] and Qld). Correspondingly, a relatively small increase in the export of uranium oxide would achieve greater reduction worldwide carbon emissions than can be achieved by adopting renewables domestically.

 

 

 

 

 

Add comment


Security code
Refresh


    Have you read this???     -  this content changes with each opening of a menu item


Travel

Russia

 

 

In June 2013 we visited Russia.  Before that we had a couple of weeks in the UK while our frequent travel companions Craig and Sonia, together with Sonia's two Russian speaking cousins and their partners and two other couples, travelled from Beijing by the trans Siberian railway.  We all met up in Moscow and a day later joined our cruise ship.  The tour provided another three guided days in Moscow before setting off for a cruise along the Volga-Baltic Waterway to St Petersburg; through some 19 locks and across some very impressive lakes.

Read more ...

Fiction, Recollections & News

The Writer

 

 

The fellow sitting beside me slammed his book closed and sat looking pensive. 

The bus was approaching Cremorne junction.  I like the M30.  It starts where I get on so I’m assured of a seat and it goes all the way to Sydenham in the inner West, past Sydney University.  Part of the trip is particularly scenic, approaching and crossing the Harbour Bridge.  We’d be in The City soon.

My fellow passenger sat there just staring blankly into space.  I was intrigued.   So I asked what he had been reading that evoked such deep thought.  He smiled broadly, aroused from his reverie.  “Oh it’s just Inferno the latest Dan Brown,” he said.   

Read more ...

Opinions and Philosophy

Bertrand Russell

 

 

Bertrand Russell (Bertrand Arthur William Russell, 3rd Earl Russell, OM, FRS (18 May 1872 – 2 February 1970)) has been a major influence on my life.  I asked for and was given a copy of his collected Basic Writings of Bertrand Russell for my 21st birthday and although I never agreed entirely with every one of his opinions I have always respected them.

 

In 1950 Russell won the Nobel Prize in literature but remained a controversial figure.  He was responsible for the Russell–Einstein Manifesto in 1955. The signatories included Albert Einstein, just before his death, and ten other eminent intellectuals and scientists. They warned of the dangers of nuclear weapons and called on governments to find alternative ways of resolving conflict.   Russell went on to become the first president of the campaign for nuclear disarmament (CND) and subsequently organised opposition to the Vietnam War. He could be seen in 50's news-reels at the head of CND demonstrations with his long divorced second wife Dora, for which he was jailed again at the age of 89.   The logo originally designed for the CND, the phallic Mercedes, became widely used as a universal peace symbol in the 60s and 70s, particularly in hippie communes and crudely painted on VW camper-vans.

 

Read more ...

Terms of Use                                           Copyright