MOTION #66: THIS HOUSE WOULD GO
NUCLEAR
Nuclear power is any
nuclear technology designed to extract usable energy from atomic nuclei via
controlled nuclear reactions. The most common method is through nuclear
fission, though other methods include nuclear fusion and radioactive decay.
Nuclear fission is the splitting of large atoms into smaller atoms with the
release of energy stored in the original nucleus. It produces no greenhouse
gases or other such pollutants but does produce radioactive waste that must be
stored safely for thousands of years. There is also the risk of a nuclear
explosion (due to meltdown) if the reaction gets out of control. This is different
from nuclear fusion, a process by which small atoms are joined to create larger
atoms, releasing energy in the process. This technology is currently some years
away from being widespread.
The debate surrounding
the use of nuclear power is hugely contentious. There is much public fear about
nuclear energy, fuelled by incidents such as Chernobyl, Three Mile Island and,
most recently, Fukushima in Japan. It is, however, an issue which is becoming
more important as we approach a time when fossil fuel resources may run out,
making it necessary to find other power sources. Germany has fuelled the debate
by announcing a complete abandonment of its nuclear power programme by 2022, a
U-turn on its previous decision to extend the life of its oldest plants by around
12 years. In 2007, nuclear power produced 28% of the EU's commercial
electricity, down from 32% in 2002. The US had 103 reactors providing 19% of
the country's electricity.
The main question is whether nuclear energy should constitute a major
component of the 21st century mixed economy of energy plans to
combat global warming and to help us meet the growing energy demand?
Pros
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Cons
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Alternative renewables are inefficient for the cost. Nuclear power is the most practical renewable energy
source as all the others face major difficulties either in scaling up to
provide enough to be a major component of nations energy mix, don't provide
energy all the time, the 'base load', or cause other environmental problems.
Nuclear is a proven technology with large firms that can build large amounts
of nuclear energy generation capacity.
The most efficient source of renewable energy has been
hydroelectric power, however, this usually creates more problems than it
solves. Building a large dam necessarily floods an enormous region behind the
dam which in turn can displace thousands of people. There are also enormous
ecological costs to dam building. A classical example is the Aswan dam in
Egypt along the Nile. Not only did many thousands lose their homes but the
yearly inundation of the Nile, which fertilised the surrounding land for
thousands of year, was also stopped; the subsequent silting up of the river
destroyed much wildlife. A similar story of ecological destruction and human
homelessness surrounded the more recent Three Gorges dam project in China.
Wind, tidal, and solar power are all affected by issues
of reliability. The tendency of wind power, in particular, to be a volatile
source of energy, means that other power sources such as fossil fuel power
stations have to make up the shortfall when wind levels drop. Tidal power
technology is still in at an early stage and may take years to become
profitable. It also has the potential to cause environmental problems in the
marine environment. For a large area of the European Union, there is not the
potential to exploit solar power as there are not enough hours of sunlight.
"Wind and solar power have their place, but
because they are intermittent and unpredictable they simply can't replace big
baseload plants such as coal, nuclear and hydroelectric. Natural gas, a
fossil fuel, is too expensive already, and its price is too volatile to risk
building big baseload plants. Given that hydroelectric resources are built
pretty much to capacity, nuclear is, by elimination, the only viable
substitute for coal. It's that simple.”
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Nuclear power is
itself inefficient: For every three units of energy produced by the reactor
core of a U.S. nuclear power plants, two units are discharged to the
environment as waste heat. Nuclear plants are built on the shores of lakes,
rivers, and oceans because these bodies provide the large quantities of
cooling water needed to handle the waste heat discharge.
It is perfectly true that alternative energy is not
efficient enough to serve the energy needs of the world's population today.
However, with investment all these methods could be made efficient enough.
Not enough has been done to make use of all the natural energy sources that
do not create the kind of damage nuclear power generation causes. We need to develop
more efficient ways to capture wind, water and solar power, to explore other
options and to reduce the level of power required. This is not an argument
for nuclear power but one for greater resources to be put to develop natural
energy sources and help protect the planet for future generations.
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Energy demands are increasing exponentially and nuclear
power is the only renewable source capable of matching it. Although EU countries are using energy more
efficiently, demand for energy continues to rise, especially in the new
eastern European member states. The demand for electricity is expected to
rise by 8-9% by 2020 meaning a much more urgent need for generating capacity.
At the same time world energy consumption is projected to expand by 50% from
2005 to 2030 leading to high oil and gas prices. The production of renewable
energy is not growing at a fast enough pace to replace fossil fuels; wind,
wave and solar simply cannot provide the quantities of energy required. It is
possible – indeed, desirable - to combine nuclear power with other
renewables, but nuclear energy is a crucial part of that mix as the only
option capable of producing the quantity of energy required. Nuclear power is
actually more efficient than any other power source: a gram of uranium 235
contains as much energy as four tons of coal.
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Nuclear power is no
better placed to deliver the amount of energy required. There is an
unrealistic focus on nuclear power as a magical solution to climate change.
Despite increasing demand the amount of electricity being generated by
nuclear is projected to fall not rise. The share of nuclear energy will
decrease from 30% to 25% in electricity generation by 2020. According to
current projections, the nuclear generation capacity in the EU would fall by
as much as 33 GWe by 2020; this fall would mostly have to be met by dirty
power plants using gas, or particularly coal.
The focus on nuclear power diverts attention from other
renewables. In reality going nuclear would squeeze out renewables. Indeed,
the former Secretary of State for Business Patricia Hewitt said in a Commons
debate on a 2003 Energy White Paper: 'It would have been foolish to announce
…. that we would embark on a new generation of nuclear power stations because
that would have guaranteed that we would not make the necessary investment
and effort in both energy efficiency and in renewables'.
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Nuclear power is clean and emits significantly less CO2
than other renewable energy sources. In many senses nuclear energy is the cleanest of renewables. It does not
produce emissions such as CO2 and greenhouse gases, which are harmful to the
population and the environment. Roughly 700 million metric tons of CO2
emissions are avoided each year in the United States by generating
electricity from nuclear power rather than some other source; according to
the U.S. Department of Energy, that is nearly equivalent to the CO2 released
from all U.S. passenger cars.
It is true that it does produce radioactive waste but
since this is in solid form it can be dealt with relatively easily and stored
away from centres of population. Furthermore, as new technology becomes
available to allow the more efficient use of nuclear fuel, less nuclear waste
will be produced. (A recent example is the development of the fast breeder reactor,
which uses fuel much more efficiently)
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Nuclear power plants
are not much of an improvement over conventional coal-burning power plants
despite claims that nuclear is the 'clean air energy.' Uranium mining,
milling, leeching, plant construction and decommissioning all produce
substantial amounts of greenhouse gases. Taking into account the
carbon-equivalent emissions associated with the entire nuclear life cycle,
not just the nuclear fission itself, nuclear plants contribute significantly
to climate change and will contribute even more as stockpiles of high grade
uranium are depleted.
Nuclear waste can remain radioactive for thousands of
years. It must be stored for all this time away from water into which it can
dissolve and far from any tectonic activity. This is virtually impossible and
there are serious concerns over the state of waste discarded even a few
decades ago. A report by the Environment Agency attacked Britain's disposal
system as many containers used to store the waste are made of second-rate
materials, are handled carelessly, and are liable to corrode; computer models
suggest up to 40% of them could be at risk of being compromised within as
little as 200 years. Tens of thousands of containers of this waste, bound in
concrete, are simply being stored above ground, mainly at Sellafield, while
the Government and the nuclear industry decide what to do with them. On
present plans it is assumed they will remain there for up to another 150
years before being placed in a repository underground, and then another 50
years before it is sealed. This problem would only be added to if more
nuclear power stations were built.
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Nuclear power gives countries energy security and
self-sufficiency. In addition, the use
of nuclear power reduces our foreign energy dependency. The European Union is
a net importer for energy, and as such is reliant on Russia and Norway,
predominantly, for oil and gas supplies. Events such as the dispute between
Russia and the Ukraine over gas supplies demonstrated that the EU's energy
can easily be disrupted by political situations outside its control1. It also
means that the EU could be drawn into disputes between Russia and
neighbouring countries because it has a vested interest in the region. This
could set a dangerous precedent, where the EU could be intimidated by Russia,
because the EU relies so heavily on Russian gas. Building more nuclear power
stations would ensure a more secure supply of energy, thereby avoiding the
potential for energy supply to become a politically charged issue on an
international scale.
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There is almost always one renewable resource that a
given country can exploit with sufficient investment; tides for islands, the
sun for equatorial countries, hot rocks for volcanic regions. Any given
country can in principle become self-sufficient in terms of renewable energy.
The global distribution of uranium is hugely uneven (much more so than fossil
fuels) and the use of nuclear power therefore gives countries with uranium
deposits disproportionate economic power. Kazakhstan became the world's
number one supplier of uranium in 2009, and other major producers such as
Russia, Namibia, Niger and Uzbekistan may not be reliable1. It is far from
inconceivable that uranium could be subject to the same kind of monopoly that
the OPEC (Organisation of Petroleum Exporting Countries) places on oil.
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Nuclear power requires phenomenal amounts of capital to
build plants, run them and then close them down. The cost of building
reactors is enormous and the price of subsequently decommissioning them also
huge. Despite more than $150 billion in federal subsides over the past 60
years (roughly 30 times more than solar, wind and other renewable energy
sources have received) nuclear power still costs substantially more than
electricity made from wind, coal, oil or natural gas. This is mainly due to
the cost of borrowing money for the decade or more it takes to get a nuclear
plant up and running.
In the meantime, billions are still being spent on
decommissioning the old ones. In a recent estimate, the UK government
calculated that cleaning up the country’s ageing nuclear facilities will
exceed £73 billion ($100 billion). On top of this, the cost of building a
nuclear waste dump costs around $29 billion. The New Economics Foundation
contends that these construction overruns and decommissioning costs are
‘hidden costs’ that are not included in the official statistics meaning that
nuclear is actually much more expensive than is claimed. According to British
Energy and British Nuclear Fuels, the cost of nuclear generation is between
2.2 and 3.0p/kWh. But the NEF says that this figure is probably a severe
underestimate, with the real cost being somewhere between 3.4 and 8.3/kWh.
This means that at a cost of 3.0-4.0p/kWh for offshore and 1.5-2.5/kWh for
onshore production, wind is a far cheaper option than nuclear. In comparison,
building cleaner coal fired power stations and investing in renewable energy
technologies would be much less costly in purely financial terms.
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Nuclear power is
very expensive. For nuclear power
plants any cost figures normally include spent fuel management, plant
decommissioning and final waste disposal. These costs, while usually external
for other technologies, are internal for nuclear power. Costs are high
compared to coal fired generation precisely because the externalities
associated with high carbon outputs are not taken into account, whereas
similar externalities relating to nuclear generation are. If costs are
calculated equivalently to coal power stations then nuclear power is
competitive.
Also the cost of construction and decommissioning of
nuclear power plants is often overestimated; the French and Swedish nuclear
industries estimate decommissioning costs to be just 10 -15 % of the
construction costs and budget this into the price charged for electricity.
Nuclear is actually increasing its competitiveness as gas and oil prices
rise, new technology makes nuclear power more efficient and construction and
decommissioning costs less. An OECD study in 2005 showed nuclear overnight
construction costs ranged from US$ 1000/kW in Czech Republic to $2500/kW in
Japan, and averaged $1500/kW. Coal plants were costed at $1000-1500/kW, gas
plants $500-1000/kW and wind capacity $1000-1500/kW. The difference, when
weighed against nuclear power's other advantages, is thus not that great.
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Encouraging the further adoption of nuclear power is
against our security interests. The scientific understanding and technology
needed to generate nuclear power is the same as that needed to create nuclear
weapons, and it is all too easy for rogue states to pretend they are only
interested in peaceful uses while secretly pursuing military applications.
This is the route India and Israel have followed, and that Iran may well be
following at present. The process of enriching uranium to make it into fuel
for nuclear power stations can be a step towards further enriching it to make
nuclear weapons. Used fuel from nuclear power stations can be separated out
to recover any usable elements such as uranium and plutonium through a method
called reprocessing. Plutonium is a by-product of the nuclear fuel cycle and
can also be used to make nuclear weapons.
Even if the intentions of foreign governments are good,
widespread nuclear power plants are at risk of terrorism, in both the
developed and developing world. If a 9/11-style bomb was flown into a nuclear
power plant, the potential disaster would be catastrophic. And the more
nuclear material is transported around the world, the easier it will be for
terrorists to get hold of some in order to make their own nuclear weapons. An
atomic bomb might one day be within the reach of some international terrorist
groups, but even today a simple "dirty bomb" (in which
highly-radioactive materials is blasted over an urban area using conventional
explosives) could be deadly to many thousands of people. Encouraging the
spread of nuclear technology enables the spread of nuclear weapons.
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Promoting continued
nuclear research is against our lives. .Spreading the peaceful use of nuclear power brings important security
benefits. The Nuclear Non-Proliferation Treaty, whose signatories include
every state in the world apart from India, Pakistan and Israel (plus North
Korea and Iran whose membership fluctuates), is largely a provision for the
sharing of nuclear power technology, which it promises to share among members
who do not produce nuclear weapons (or, in the case of the 5 nuclear states,
who commit to a gradual and continual reduction in weapons stockpiles). This
has seen states including Brazil and Argentina abandon their nuclear weapons
programmes, in order to gain access to nuclear power technology. It is in our
interest to promote peaceful use of nuclear technologies, encouraging
scientists to find employment in an industry which is both peaceful and
useful rather than selling their skills to the highest rogue bidder. The
treaty also establishes and sets the remit of the International Atomic Energy
Agency, which all members are bound to grant unlimited access to in order to
facilitate inspection of nuclear facilities. This ensures that facilities
cannot surreptitiously be used to facilitate the creation of nuclear weapons.
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We hear a lot about the depletion of supplies of fossil
fuels, however it is not mentioned that there is also a potential problem
with the supply of uranium: "There is currently a gap in the amount of
uranium being mined and the amount of uranium being consumed," states
Nuclear Energy Corporation of South Africa (Necsa) CEO Rob Adam.
This would potentially be ok if it did not look like we
are approaching a uranium peak. The peak in supplies of uranium seems likely
to arrive sometime between 2030 and 2040 with uranium being almost totally
gone by 2070 or 2120 at the latest. It is the peak that matters, as after this
point supply will not be able to keep up with demand. If you take into
account that nuclear energy produces 16% of world electricity, and less than
5% primary energy supply, it seems impossible to me for nuclear energy with
current technology to ever satisfy a big part of the world's energy demand.
It means that nuclear power is not a sustainable base which we should be
looking to be dependent on.
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The supply of
uranium needed for nuclear power is not actually unlimited, renewable or
sustainable. The projected
lifespan of uranium must be compared to that of oil, gas and coal which are
irrefutably running out. Uranium supply is expected to last for over 200
years, which could be extended to 30,000 with modern technologies. There has
not been sufficient research undertaken to explore new potential sites, new
forms or ways of prolonging the life of that which we already have access to.
For example, it has been claimed recently that there are potential
alternatives to uranium which could be used in the nuclear process:
"There is also almost always thorium, a lightly radioactive metal, in
the same ores, and it has to be disposed of." This disposal would create
the same amount of energy as nuclear fission. The USA and Australia have
potentially very big mines for rare earths and they are going to be producing
Thorium as a waste product anyway, what better way to dispose of it than by
creating energy?
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The nuclear industry has a shameful safety record and
it is haunted by the constant risk of meltdown or explosion. "No reactor
in the world is inherently safe. All operational reactors have inherent
safety flaws, which cannot be eliminated by safety upgrading. Highly
radioactive spent fuel requires constant cooling. If this fails, it could
lead to a catastrophic release of radioactivity. They are also highly
vulnerable to deliberate acts of sabotage, including terrorist attack".
Chernobyl and Japan's Fukushima plant has shown the world what happens when
cooling systems fail.
The effects on the local people and the environment are
devastating. It cannot be a coincidence that the rate of occurrence of
certain types of cancer, such as leukaemia, is much higher in the population
around nuclear plants. It is perfectly true that modern nuclear reactors are
safer but they are not completely safe. It is not worth the risk.
The dumping of nuclear waste also presents a host of
problems. The Nuclear Inspectorate in the UK has been very critical of safety
standards within the industry; it is too dominated by the profit motive to
really care about safety and too shrouded in secrecy to be accountable.
According to Agenda 2000: "The problem of nuclear safety in some
candidate countries causes serious concerns to the EU... and should be
urgently and effectively addressed. It is imperative that solutions,
including closure where required, be found to these issues in accordance with
the Community nuclear acquis and a "nuclear safety culture" as
established in the western world as soon as possible".
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Nuclear power is
potentially extremely unsafe. It is
unfortunately the case that the nuclear industry has a bad reputation for
safety. This is undeserved. The overwhelming majority of nuclear reactors
have functioned safely and effectively for their entire lifetimes. The four
historic nuclear disasters (1957 Windscale Fire, 1979 Three Mile Island and
1986 Chernobyl, 2011 Fukushima, Japan) killed fewer people than the oil and
coal industries have. "The multi-agency U.N. Chernoby Forum reported
last year that 56 deaths could be directly attributed to the accident, most
of those from radiation or burns suffered while fighting the fire. Tragic as
those deaths were, they pale in comparison to the more than 5,000 coal-mining
deaths that occur worldwide every year".
Further, the two
major nuclear accidents, at Three Mile Island and Chernobyl, were both in old
style reactors, made worse in the latter case by poor Soviet safety
standards. The Chernobyl disaster took place at a time when our understanding
of nuclear issues was much lesser than it is now, and was the result of
poorly trained staff in the plant's control room. Power stations today are
better staffed, better maintained and better understood, and because the
effects of an attack upon them are acknowledged, they are better defended and
monitored by the armed services. No system can be 100% safe, but solid design
principles can minimize risk.
Perhaps the best guarantee of safety standards in the
nuclear industry is the increasing transparency with which the industry is
presenting itself. Many of the problems in its early days were caused by
excessive control due to the origin of nuclear energy from military
applications. As the gap between the two separates so the nuclear industry
becomes more accountable. The question is, is the slight risk of a nuclear
accident a worse danger than the inevitable climate catastrophe that awaits
us?
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