Brian Parkin takes look at the past, present and possible futures of nuclear power in Scotland. If you want to read more on this topic do try the excellent paper by Simon Butler on ten reasons why nuclear is not the answer.
A MURKY MYSTERY
On a per head of population, Scotland has the highest concentration of nuclear installations in the world. Apart from the Advanced Gas Reactor stations (AGR’s) at Hunterston B, (Ayrshire) and Torness (East Lothian), both owned and operated by eDF, the other nuclear sites in Scotland are where nuclear power generation has ceased- but where licences remain for the continuation of nuclear power generation in the future. In total the number of nuclear sites in Scotland is five- the 2 operating reactors plus Chapelcross, Hunterston A and Dounreay in Caithness. In addition to the civilian generating sites, there are military related sites at Faslane on the Clyde, Vulcan in Caithness and Rosyth near Edinburgh. (See map).
The Chapelcross and Hunterston A stations are the now decommissioning Magnox-type reactors, ten of which formed the UK’s entrance into the world’s nuclear power race. The Magnoxs were developed over a number of years and so shared little in design and operational characteristics- but what they all shared was a graphite (carbon) core which was gas (CO2cooled) and which moderated (controlled) the speed of the Uranium235 fission- which in turn provided the heat for the steam that drove the electric turbines. All Magnox reactors are currently in the hands of the Nuclear Decommissioning Authority with the intention to render the sites decontaminated and safe- a process for which the technology is yet to be developed and the costs unknown.
The Dounreay site is the home to that ultimate nuclear fission fantasy- the Fast Breeder Reactor (FBR). The two FBR plants were intended to reproduce their own Plutonium fuel during operation- but in actual fact produced less power than consumed by their works canteens(!). The Dounreay plants present the greater decommissioning challenges due to the extremely high and extended half-life of their Plutonium fuel rods and the extreme levels of site irradiation.
GOING, GOING, GONE?
The remaining AGRs at Hunterston B and Torness, along with the other six such stations in the UK, both share a generic design fault in the form of micro and hairline cracks in their moderator block graphite cores. This has brought forward the AGR closure programme with the problem so acute that the Hunterston B station is due, on a 40% load to shut-down within the next 4 years. This will leave Scotland with the remaining Torness AGR at a 1360 MWe rating on declining load factor. According to current plans Scotland will have ceased to have any nuclear generated electricity within its borders by 2031.
But even after some 60 years of nuclear failure it might be premature to read the funeral rites.
From its very inception, nuclear power has been beset by problems. Its capital costs have historically been prone to going through the roof. Also, recurring safety issues have led to operational caution in the form of low load-factors with down-time and unscheduled outages leading to negative revenues from unreliability- all of which have made nuclear power the most expensive and unreliable on the system.
But in order to disguise the real cost of nuclear power, it has always been given a ‘first on the system/must run’ status to which in addition it has been covered by transferred subsidies from other forms of generation. In other words, nuclear power has historically inflated the overall cost of electricity to the disbenefit of the consumer. Nuclear power has been one of the biggest aggravating factors in the persistence of fuel poverty.
Also, despite a continuous torrent of glossy promotions, the nuclear industry has always hidden the cost and environmental hazards of the back-end matter of waste ‘management’; how to safely treat ‘spent’ fuel rods that represent a lethal radiological threat, plus hundreds of tonnes of reactor core material which must be ‘managed’- kept out of harms way in sealed containment for an incalculable number of years. At no stage in the planning and design of any reactor have such technological and economic challenges been factored in.
ECONOMIES OF SCALE 1: BIGGER IS BETTER
The continual economic failure of nuclear power has given rise to an enduring industry fantasy- basically by building bigger reactors with higher power densities and outputs, an ideal reactor design will become a generic model with large run replication and better reactor efficiencies. Hence some thirty years of shift-shaping a Pressurised Water Reactor of around 1,400 Megawatts output in the hope of a tooth fairy. So around the year 2000, optimum size thinking settled on the 1,600 MWe European Pressurised Water Reactor of the type now being constructed at Hinkley in Somerset- a sister of the Normandy and Finnish massive over-run and over-cost failures. So instead:
ECONOMIES OF SCALE 2: SMALL IS BEAUTIFUL: THE SMALL MODULAR REACTOR (SMR)
This is the obverse; a Small is Beautiful alternative to the Bigger is Better doctrine. The big sell of the SMR is a reactor that it is small, therefore requiring a smaller site footprint. It is also a modular plant that can be factory assembled and delivered with each unit- the reactor, plus cooling system components, steam turbine, pressure vessels and steam generator that when assembled form a single module that just requires being bolted into an outer shell and utility services like an Ikea kitchen flat-pack- or so the promotional goes. Also, once assembled, the reactor core can be loaded with fuel and control rods- all without the need for refuelling during the lifetime of the plant- about 40 years. The concept of the SMR is derived from earlier military Pressurised (Light) Water Reactors that were developed during the 1950-60’s to power nuclear submarines and aircraft carriers. Typically, such a reactor would be rated at around 30MW electrical output- and in the US and Russia such ‘mini’ SMR’s have been undergoing operational trials.But in many ways, the SMR is pretty well a conventional reactor sub-species in that its produced energy is derived from nuclear fission with Uranium235 as the fuel.
However, in the UK Rolls Royce have been scaling up their SMR designs to much bigger out-puts to more conventional power station ‘set’ sizes of 330-440MWe. Initially, this would seem to contradict the aim of the objective of compact size units- which to some degree is illustrated with the image of a SMR reactor encased in primary containment shell on the back of a low-loader truck. Also, the slender diameter of the reactor primary containment promotes the impression of technical simplicity-an impression dispensed by the cutaway illustration- added to which is the reality of the most demanding of shell pressures and an internal temperature hotter than the sun.
Initially, the sales spiel regarding the relative simplicity of the SMR is based on a claimed design and operational simplicity and flexibility of operation- along with claimed low capital costs of some 30% less than ‘conventional’ Pressurised Water Reactors. And it is here that SMR is now being projected as the answer to the need for a‘baseload’ component in a mainly renewables- but largely intermittent generating capacity. And with outgoing AGR nuclear stations at Hunterston and Torness- plus declining output from the gas-fired station at Peterhead, a smaller, lower cost and flexible SMR has some attraction.
Scotland; now virtually at the end of its fossil power generation history faces a future of almost unlimited renewable energy power generation technologies. Wind, wave, tidal, hydro, geo-thermal and solar power has recently begun to combine in powering Scotland for whole days without fossil or nuclear inputs. That is the future; not with a nuclear component that as ever offers jam tomorrow- but in the present offers the highest cost and most dangerous energy on the planet.
The ‘Big Read’ in the Herald newspaper on Sunday 4th October was ‘The nuclear option – can atomic power save the human race from climate change?’. In it, journalist Neil Mackay reviews a new book by US earth scientist James Lawrence Powell. Powell argues that we are at a tipping point that will lead to runaway global temperature rises unless decisive action is taken to reduce greenhouse gas emissions to zero. In this he is absolutely right. However, he goes on to argue that achieving zero carbon by replacing fossil fuels with renewable energy technologies will take too long. According to Mackay, Powell argues that achieving zero carbon in a decade by adopting renewables is just ‘infeasible’. The only serious option is to produce all our energy needs by a massive expansion in the number of nuclear power plants. Essentially, he says that we should use nuclear to buy time while renewable technologies are developed further.
Undoubtedly current energy needs could be met by nuclear. But Powell himself concedes it would take at least 25 years for this level of capacity to be reached. Indeed, construction timetables for nuclear power stations are notorious for length overruns.
Powell is not alone in arguing for nuclear as the means to end the climate crisis. However, in our view the nuclear strategy is profoundly mistaken.
Nuclear power has always been entangled with nuclear weapons programmes. The US ‘Atoms for Peace’ programme, launched at the height of the cold war promised a future of almost limitless energy. In truth the civilian reactors provided the raw material for a huge increase in the US nuclear arsenal. By 1961 the US inventory of nuclear weapons was equivalent to 1,360,000 Hiroshima bombs. In the US, the UK, Russia and elsewhere nuclear power has always been a necessary support for nuclear weapons. In the UK context researchers at the University of Sussex Science Policy Research Unit have shown that the sole case for nuclear power is to subsidise nuclear weapons. Electricity consumers are paying for the high cost of an industry that subsidises the military nuclear weapons programme.
Worldwide the number of operational nuclear plants is in long-term decline. In part this is a response to Chernobyl and Fukushima, but it is also a result of the high cost of building new plants (not to mention the eyewatering sums needed for decommissioning plants at the end of their life). Renewables are cheaper than nuclear power and the gap is growing year on year.
Nuclear power is not zero carbon either. Greenhouse gases are admitted at every stage of the lifespan of a nuclear power station. The process of mining uranium and the process of milling and separating the uranium from the ore omits considerable carbon and is likely to be more energy intensive in the future.
Powell has undoubtedly played an important role in arguing the case for rapid action in the face of the climate crisis. He is a fine scientist. However, in making the case for nuclear he employs inaccurate data and even worse judgement.
He notes that in Sweden GDP and carbon emissions rose in lockstep until Sweden increase nuclear power generation at which point GDP started to grow faster than emissions. We are meant to understand here that GDP is equivalent to wealth and that with nuclear we can have GDP growth and low emissions. This is an argument that appeals to big business – it should be less appealing to the 99% for whom GDP growth in recent decades has gone along with increasing inequality.
He dismisses renewables as being immature and not ready yet. But serious studies around the world, including those by Commonweal in Scotland and the Centre for Alternative Technology in Wales, have shown that existing renewable technologies can achieve zero carbon. The technologies that are not ready are those like Carbon Capture and Storage which are advocated by those who want to tackle the climate crisis while not making the radical changes in the economic system that a genuinely sustainable economy requires.
Inexcusably Powell plays down the issue of nuclear safety and Mackay repeats his figures without questioning them. ‘Manual for Survival – A Chernobyl Guide to the Future’ by Kate Brown ought to be compulsory reading for anyone writing on this topic. In a scrupulous forensic investigation, she uncovers the decades long efforts by the old Soviet Union and then the US to cover up the real impact of Chernobyl. Rather than Powell’s 4 – 16 thousand deaths the true figure is most likely in the range 35 – 150,000. And it remains the case that long-term safe storage of the radioactive by-products of nuclear power remains unsolved.
Don’t Bank on the Bomb Scotland has produced an excellent new report that looks at the links between nuclear weapons, tackling the climate crisis and degradation of the environment. Written by Linda Pearson the report collects together a wealth of useful links for anti-war and climate campaigners alike. The aim of the report is ‘to highlight the connections between climate change, nuclear weapons, militarism, environmental destruction, racism, gender inequalities and social injustice in order to build a broad-based movement that can challenge existing power structures and bring about systemic change’.
Scot.E3 from its formation has argued that defence divestment needs to be part of the transition to a sustainable zero carbon economy. We agree with Don’t Bank on the Bomb that ‘… any Green New Deal plans should include a transition away from military production, as well as a transition away from fossil fuels’.
The new report highlights the expenditure of huge sums of money on ‘modernising’ nuclear arsenals around the world. The nuclear industry (military and civilian) is perhaps the most centralised and authoritarian manifestation of the military-industrial complex. We would argue that it’s not simply that the money spent on nukes should be spent on developing a new sustainable economy; the nuclear industry and arms manufacture more generally distorts economic and social choices and constrains civil liberties. The skills of engineers and scientists that could be devoted to productive, environmentally useful activity are instead harnessed to a system that produces waste, trashes the environment and risks all our lives. The report highlights the interconnections between the drive for profit, the impact of climate change and increased military tensions. One example of this is the race for commercial and military dominance of the Arctic.
This video has Professor Andy Stirling and Dr Phil Johnstone, in conversation with CND Chair Dave Webb, about the connections between the UK’s nuclear weapons programme and nuclear power. Their research shows that the sole case for nuclear power is to subsidise nuclear weapons production. Electricity consumers are paying for the high cost of nuclear generated electricity and thereby subsidising research that is used by the military to maintain the nuclear weapons programme. The argument that Nuclear Power is ‘climate friendly and necessary’ is a convenient afterthought to disguise the real reasons for developing it.
The supporters of nuclear energy are at it again, attempting to position it as key to a ‘green’ recovery from the Covid-19 pandemic, and as part of the solution to the climate catastrophe. In this post, first published at www.rs21.org.uk and republished here with permission Scot.E3 activist Brian Parkin exposes the dangerous myths of nuclear power.
Climate of doubt
Nuclear power has made many bold claims on economic viability, safety, reliability and environmental sustainability over the years. Again and again it has been disgraced. But nuclear power is the come-back-kid when it comes to energy technology reincarnation and rebranding. Backed up by state revenues, corporate confidentiality and operational unaccountability, the nuclear industry remains the biggest fraud of the industrial age.
One of the most persistent frauds is the claim that it is the most technologically advanced form of electricity generation available. In fact, the global nuclear inventory is ageing and, as safety fears mount, it delivers ever-decreasing load factors (efficiency) and availability (the amount of time when energy is produced). The industry persistently claims that past operational problems are being resolved with each successive advance in reactor design and waste management improvement. It is forever promising that technological leaps will bring the cost of nuclear-derived power inexorably down.
The advocates of nuclear power now see the current economic and climate crises as an opportunity. Nuclear power still holds onto its reputation as a clean source of energy since it produces neither acid-rain precursors nor CO2 emissions, and does not rely on relatively short-term finite fuel resources. Yet, despite this continually revamped argument, nuclear power cannot address either the prohibitive costs reality nor the safety issues that inevitably arise from an energy source created by fallible humans attempting to harness a power source hotter than the sun. It also hinders rather than advances the path to a low-carbon future.
This article will explain why the periodically disgraced nuclear dream is so dangerous, explain the political power that the industry can mobilise, and resist the arguments of supporters of nuclear power, such as George Monbiot, within the climate movement.
Today, nuclear power accounts for some 10.5% of all electricity generated worldwide. This power comes from a total of 457 reactors across a total of 31 countries.Initially, the promotion of nuclear power generation was limited to the post-war ‘spheres of influence’ contest between the Soviet Union and the USA that extended their influence via the means of offering client states a various range of infrastructural vanity projects. This arrangement was later complicated by the rift opened up between the USSR and China, mainly in the Indian sub-continent, with India and Pakistan respectively choosing Russia and China as economic allies.
Another factor was the post-war craze for the developing economies (‘Third World’ in the terminology of the time) to obtain sexy totemic technologies that marked their entry into the ‘First World’ via the procurement of mega-projects that gave swagger-power to the various state bureaucracies but little in terms of gross benefits to what remained impoverished populations. This often proved to be the case in countries where gross electricity demand was low and where the necessary distribution and supply networks were near non-existent.
In fact, what these projects did, via the means of fuel-cycle and operational technology, was to increase the subordination of developing states. Any illusions of sovereign security of supply and energy self-sufficiency, printed on the tin of the latest Pressurised Water Reactor or Boiling Water variants, were quickly blown out of the water. Operational ‘teething troubles’, low load factors and poor availabilities left developing states unable to pay off debts acquired throughout the construction, commissioning and life-time operation of reactors that had not been needed in the first place.
Nuclear power relies on the controlled heat energy released by the separation (fission) of the nucleus of an enriched heavy radioactive element, in most cases Uranium235. This process is therefore closely related to that of the uncontrolled fission of a nuclear weapon. With further ‘enrichment’, a totally artificial and radioactive element, Plutonium, can be created: the stuff of thermo-nuclear ‘hydrogen’ bombs. Consequently, it has always been a matter of international concern that civil nuclear programmes may well lead down the road to nuclear arms proliferation.
From its inception in 1956 at Windscale (now Sellafield) in Cumbria, nuclear power in the UK has been driven by the military imperatives of weapons grade material: supporting US missile ambitions, offering a means of repaying the US-UK lend-lease debts, while ensuring that by ownership of a military nuclear programme, that the UK would be ensured a seat on the UN Security Council. In this regard the post-war Labour government was as culpable as successive Tory administrations.
The International Atomic Energy Agency (IAEA) was established in order to promote nuclear power, albeit within a tightly set-down set of protocols policed by the United Nations. However, by this point nuclear weapons ownership had already expanded beyond the post-war Cold War four of the US, USSR, France and the UK to China, India, Pakistan and Israel.
The other IAEA concerns were the standardisation of operating standards, mainly in order to create a safety culture as well as control over the fuel cycle and the manufacture of fuel rods and subsequent ‘waste management’. The latter issue was never satisfactorily resolved either technically or economically. What these arrangements have ensured, though, are techno-dependencies whereby fuel-cycle management has been out-sourced to the wealthier ‘nuclear club’ states for fuel manufacture, enrichment and the alchemy of fuel recycling.
Reactor enigma variations: jam tomorrow
Over some 55 years of reactor design and development, little in the way of a standard ‘safe’ reactor consensus has arisen. This is largely due to state-sponsored nuclear competition looking for export opportunities.
Initially, the design of reactors was a military thing. In the case of the US, this meant a Pressurised Water cooled Reactor (PWR), which over time became the dominant and preferred reactor for US power utilities. Elsewhere, designs favoured other means of moderating (slowing down) neutron release via different core materials such as graphite or heavy water, while others favoured different primary heat/cooling cycle systems such as pressurised light (ordinary) water, heavy water, gas (usually carbon dioxide) or sodium (liquid salt). But whatever the means, the sole object remains to raise super-heated steam in order to drive a steam turbine in order to produce electricity via an alternator. Whatever the glitz, nuclear power is a steam-age technology.
For over 50 years, nuclear power in its civilian guise has promised clean and infinite energy at a price ‘too cheap to meter’. In every respect, it has failed abysmally: due to impossible engineering challenges, rocketing costs, ever-demanding and failing safety systems and a perpetually irresolvable economic and technical waste management issue. Despite the continual claims that, ‘this time we have really got it right’, there is still no standard and generic design and operational culture.
When this is combined with newer imported costs and construction delays, the consequence has been that nuclear power has never been able to operate in a ‘free’ market, without state subsidies and a skewed regulatory environment.
Meanwhile, epic nuclear ‘incidents’ such as Windscale (now called Sellafield) (1957), Three Mile Island (1979), Chernobyl (1986) and Fukushima (2011) have all resulted in massive nuclear releases to the outside environment with melt-downs and huge reactor fires beyond the scope of established safety procedures. With each such incident, the nuclear ‘community’ has had to pause, think and then go into inventive mode regarding another excuse and a massive falsehood regarding the extent of environmental damage and long-term radiological health assessments.
Then, after a respectful moment of silence, this has been followed by another vast PR offensive, garnished with even more Jam Tomorrow.
An energy technology looking for a cause
Nuclear power has met each set-back with a new justification for its existence: security of supply, cheap power, clean power, infinite power and a source of power beyond the control of working class militancy (in the case of the UK, the miners). And at each challenge, a new fall.
But with the realisation of an impending climate catastrophe, the advocates of nuclear finally think that they have a irrefutable case. As nuclear power has no operational CO2 footprint, it is touted as the environmental answer for clean and sustainable baseload power. They foresee a new and massive worldwide programme of nuclear reactor construction, standardisation and replication costs that will set generating costs on a downwards trajectory.
One persistent argument is that the ‘replication costs savings’ would be possible if only the industry world-wide could agree on one generic reactor design that could be used as the architecture for an ongoing sequence of revisions. The new basic stations could be built in line to growing capacity demand and with an actual reduction in capital costs as new orders came on stream. Not so much as jam tomorrow as pie in the sky.
However, such ‘replication savings’ arguments persisted within the UK nuclear cabal up until 1988, where at the Hinkley Point C nuclear inquiry, the UK Central Electricity Generating Board (CEGB) insisted that the Hinkley Point PWR would be the first-born of a ‘small family’ of UK PWRs. This claim was blown out of the water by evidence submitted by the National Union of Mineworkers.
The nearest thing that an international nuclear agreement has come to is an emerging view that the Pressurised Water Reactor offers the best basic model upon which future reactors should be based. The US Westinghouse (now General Electric) AP100 PWR is now being copied by China as an export model within its developing ‘sphere of influence’. It also forms the basis for technically and economically disastrous ‘third generation’ European PWR (EWR) at Flamanville in Normandy and Olkiuoto in Finland. The EWR is also the reactor of choice for the massive cost and schedule over-running Hinkley Point C project in the UK, and has been accepted as the design favourite for China’s Taishan 1 project which started in December 2018.
A little jam today?
Beyond the third generation of PWRs there are a number of other technical options on offer. Hitherto aimed at big capacity baseload units of reactors with a 1,000 Megawatt plus output, the nuclear industry has been looking at the development of smart grids with response capabilities for inputs from more intermittent small scale units. Within this scenario, smaller and more operationally flexible nuclear reactors are envisaged: the so-called new generation of Small Modular Reactors with capacity sizes down to as small as 10 MWe. Such SMRs could be prefabricated and shoe-horned into existing conventional power station sites.
But even if operationally proved as safe and capable of high load factors, SMRs would hardly contribute much to the capacity need as stated by the advocates of nuclear power. Given that the SMRs will be little more than down-scaled versions of already tried and tested failed reactor designs, there is little reason to expect them to behave over time little better than their bigger grand-parents.
Moreover, funding for nuclear research and development (R&D) drains from the pittance devoted to R&D for renewable energy, and the development large scale storage batteries and disaggregated smart grids which could do so much to create baseload potential for otherwise intermittent and ‘micro’ renewables.
It is a dangerous fantasy to think that nuclear power is best placed to replace fossil fuel power production. According to the International Energy Agency, the installed global power generating capacity as of 2018 was:
All fossil fuels
All renewables, including:
Statistics compiled and amended by Dr T. Wang, Statista, 3 December 2019
Meanwhile, of non-renewable fuel sources, in terms of total % global electrical power consumed:
Non-renewable fuel source
% total global electrical power consumed (2017-18)
IEA World Energy Outlook 2019.
The projection of a 65% nuclear capacity to replace all fossil fuel power plant by 2040 does not just mean the replacement of all existing carbon power generation. It also means an immediate programme for replacing all existing nuclear power plants, two thirds of which will be due for end-of-life decommissioning within the next five to ten years anyway. With no standardised reactor type and operational culture, this would mean 65% of global power generating capacity depending on a variety of plant designs for which no commercial insurability safety assurance will be possible.
Then there is the issue of waste management. Given a present 10.5% global nuclear power generation with no waste management consensus, a capacity increase of six times over presents the stuff of nightmares.
The problem of waste recovery, recycling and long-term management (storage) has so far proved insoluble for the nuclear industry. The industry adopted wet storage – large underground cooling pools – pending proper technical waste management. This was meant to be a temporary solution, but it is still used to this day.
In the mid-1970s, the UK BNFL declared a worldwide solution with the development of a Thermal Oxide Reprocessing Plant (THORP) to be built at Sellafield in Cumbria. But dogged with a continuous string of technical problems, as well as very real doubts as to the safety of the Thermal Oxide process, the THORP project with a bill in excess of £5 billion was scrapped in 1989. THORP contracts worth many billions of dollars were force majeured, and nuclear states such as Canada, France, Japan and Sweden were asked to take their waste back home.
According to a 2019 report, some 250,000 tonnes of highly radioactive spent fuel material is in wet storage in some 14 countries awaiting a waste storage solution that will never come. Meanwhile, some 2 billion tonnes of uranium mining ‘tailings’ and process waste remain untreated and with no treatment or financial liabilities settlements in sight.
This is the legacy for future generations that 65 years of nuclear folly has bequeathed. Long-life and long half-life waste radioactive elements, isotopes and their ‘daughter’ products that will last further into the future that human civilisation has taken to reach this moment.
Virtually all of the statistical information referenced above was compiled before the present Covid-19 pandemic. It also predates another global economic event: a growing global recession that has so far been eclipsed by the immediate public health disaster. Such pandemics are, like recessions, treated as natural forces: events beyond the comprehension and control of mere mortals like the ‘rational self-interested actor’, much beloved by liberal economists.
Statistics based on real and reliable evidence make projections rooted in a status quo, which itself presumes business as usual. From such vulgar assumptions, trends are discernible and tendencies towards increasing capital accumulation, urbanisation and population growth can be factored in as verities based on a dismal human condition, unfettered population growth and the persistence of the rule of capital and the inevitability of capricious markets.
Against such projections the IEA and an ever-predatory World Nuclear Association now draw on the undeniable probability of worst-case climate catastrophe to create a new age for nuclear power need. So from a current 10.5% of nuclear generated power, we have to envisage a CO2 abated 2040 where nuclear power will provide 62% of electricity. This means that 70% of all currently operating reactors will have been replaced and that every 40 years or so, all reactor capacity will have to have been renewed.
This means that forever, humanity will have to exist on the brink of a barely containable climate threat, and a source of dangerous energy at barely affordable prices for the bulk of the global population- and that forever, the deceptive alchemy of waste management will remain the radioactive legacy for generations to come. Such a projection is both hopeless and apocalyptic. It offers an eternity of business worse than usual, and it offers a totally fraudulent scenario.
Furthermore, it denies the human capacities of both hope and redemption through struggle. It denies the organised agency of a proletarian class that by 2009 (by UN estimates) had already come to comprise over 52% of the world’s population. Statistical apologists for capitalism and its compendium of various barbaric imperialist scenarios may interpret the world in many ways, but it still remains the role of a revolutionary working class to change it. For the better.
 International Atomic Energy Agency (IAEA) report 2019.
 The PWR and BWR reactor types use ‘light’- ordinary water in the primary and secondary cooling cycles.
 The IAEA was set up as an ‘independent’ agency in 1957 for the promotion of ‘Atoms for Peace’. It is located in Vienna and has 171 member states. It reports to both the UN general and Security Councils.
 Former Secretary of State for Energy Tony Benn in his statement of case for the NUM at the Hinkley Point Inquiry, went on to describe the UK Magnox reactors as little more than ‘bomb factories’.
 Israel is neither a member state of the IEA nor a signatory to the Nuclear Non-proliferation Treaty.
 The ‘fuel cycle’ covers the process of mining Uranium or to the manufacture of nuclear fuel and its waste ‘management’.
 The so-called ‘Nuclear Club’ presently comprises Argentina, Belarus, Belgium, Canada, France, Germany, India, Japan, Pakistan, Russia, S Korea, Spain, Switzerland, Taiwan, Ukraine, UK and US.
 Heavy water is water with a molecule of oxygen plus two isotopes of deuterium- a hydrogen ‘heavy’ isotope with two electrons as opposed to the usual one.
 Baseload power is electricity from a reliable round-the-clock source not subject to daily or seasonal interruption.
 ‘Replication savings’ are the economic benefits arising from series production: i.e. the ‘economies of scale’. In the UK such replication benefits were promised with the Advanced Gas-cooled Reactors (AGRs) which now make up all but one of the UK nuclear inventory. In this case the ‘savings’ ended up as double the original project cost.
 The 1986-89 Hinkley Point Inquiry was for an original proposal involving a Westinghouse Type AP100 PWR. The present Hinkley Point project presently taking place is based on an Areva/EdF European PWR (EWR).
 NUM Proof of Evidence. Parkin et al. Hinkley Point C public inquiry. Proof denied on grounds of ‘misappropriation’ of confidence and ‘purloining’ of information.
An updated version is now available of our briefing on the dangers posed by the damaged Hunterston nuclear reactors and the reasons why nuclear power has no part to play in decarbonising the Scottish economy. We’ve reproduced the text here and you can download the briefing from our resources page.
The two remaining nuclear power stations in Scotland can generate about a third of our electricity when in operation. Hunterston B and Torness are ageing, in bad shape and well past their planned retirement dates. This briefing explains why they pose a serious risk to public safety and why nuclear has no place in a sustainable energy policy.
Problems with AGRs
The Scottish nuclear reactors at Hunterston and Torness are both examples of what are known as Advanced Gas Cooled Reactors or AGRs. Designed in the 1960’s, AGRs were built at seven sites around the UK between 1965 and 1988. Hunterston was connected to the grid in 1976 with a design life of 30 years. The reactors have had a consistently poor record. To achieve high-energy efficiency they were designed to operate with very high temperatures in the reactor core. This requires a very complicated reactor design. The thousands of graphite blocks that make up the reactor core are critical to reactor safety. However, the bolts that secure them are liable to corrode at the planned operating temperatures. As a result the reactors have always been run at lower than designed temperatures ensuring that efficiency is sub optimal.
The big selling point of AGRs was that they were designed for continuous operation. The idea was that the fuel rods and control rods that govern the rate of the nuclear reaction could be moved in and out of the reactor core while it remained in operation. Again this was never achieved. Expansion of the reactor core resulted in the channels for the fuel rods and control rods being distorted out of position. Consequently the necessary precision of fuel rod and control rod insertion/extraction was never achieved and after a series of serious fuel rod jamming incidents, on load refuelling was abandoned.
A disaster waiting to happen?
However, the story of AGRs is not just about failure to achieve design objectives. Graphite, which makes up the rector core, is a form of carbon. Subject to intense radiation it becomes brittle and prone to cracking. The longer the reactor is in operation the worse this becomes. Reactor 3 at Hunterston is currently offline because it’s estimated that there are 377 cracks in the reactor core. Reactor 4 has an estimated 209 cracks and has been allowed to run for 4 months up to December
To put this in context there are 3000 graphite blocks in each reactor. The latest report from the ONR (Office for Nuclear Regulation) warns that the cores are disintegrating with 58 fragments so far identified. This has huge implications for safety.
Hunterston B is 42 years old. It was originally designed to operate for a maximum of 30 or 35 years and it is running beyond the original design safety limits. With the ongoing crumbling of the reactor core. A sudden outage, steam surge or earth tremor could result in a serious accident and a large release of radioactive gas. If other safety systems were to fail – and they are untested – there is a possibility of a catastrophic accident on the scale of Chernobyl. The direction of the prevailing wind would take the radioactive plume across Glasgow, Edinburgh and most of the central belt.
Torness started producing electricity in 1988 and was scheduled to close in 2023. Owners, EDF Energy recently extended this date to 2030. It shares problems of cracking in the graphite core with Hunterston and in addition has had to close down on several occasions in the last decade as a result of jellyfish and seaweed clogging the secondary seawater cooling systems.
We don’t need nuclear
In the past Scotland has generated an energy surplus. In 1989 primary energy capacity in Scotland was 45% more than the level of demand. The margins are now much narrower. Reliance on ageing nuclear capacity rather than planning for non-nuclear green alternatives could result in a shortfall in supply in the future. We can decarbonise through further development of wind, solar, wave and tidal energy. Nuclear is unnecessary, expensive, poses a high risk to health and wellbeing and only exists because it is essential to the nuclear arms programme. Retention of current nuclear capacity is not only high risk but also acts as a barrier to the development of a long-term sustainable system of energy production.
Urgent need for action
EDF want to keep operating both reactors at Hunterston. They have redefined the ‘safe’ limit for the number of permitted cracks in the cores. But the level of risk is just too high. The Westminster Government and EDF are desperate to get Hunterston back on line. Tory policy of building new reactors, rather than investing in renewables, is in tatters as first Toshiba and now Hitachi back out of new build in Cumbria and Wales. The projected cost of energy from the planned Hinckley C reactor far exceeds the cost of wind and solar.
We need to see the end of nuclear as part of a shift to a sustainable economy. The role of a national investment bank and a national energy company is crucial in making a rapid move to clean, safe energy. In the process more than 100,000 new climate jobs could be created in Scotland. While current discussion of these initiatives by the Scottish Government is welcome a much greater sense of urgency and a commitment to a climate jobs strategy is required. Closing Hunterston can be step one in building the campaign is that’s required.
On 10 January we wrote a short blog post on the dire state of the Hunterston B nuclear reactors and reported on a meeting where environmental radiologist Ian Fairlie spoke about the risk this poses to the population of central Scotland and beyond.
Ian Fairlie was back in Edinburgh on February 5th to provide an update on developments. Along with a colleague he had presented a technical report to the Office for Nuclear Regulation (ONR) – the regulatory body that has to give EDF permission to resume operations at Hunterston. The ONR agreed with the substance of his report. Apparently the inspection of the reactor core suggests that a small number of the graphite blocks have double cracks but more than expected have multiple cracks. It also transpires that Hunterston in fact has only one safety back up system rather than two – as became the norm in the later Advanced Gas Cooled Reactors (AGRs). Overall the ONR’s view of the current state of the reactors is even bleaker than Ian Fairlie had suggested in January. And in the face of this EDF are lobbying for reducing the accepted risk factor for the reactors by a factor of a 1000.
There is almost no chance that the reactors will be restarted in March and April as EDF have stated. This gives more time to continue to raise awareness of the safety threat they pose and to get the Scottish Government onside in a campaign to ensure the reactors are never restarted. There is no immediate threat to jobs because it takes some years for the reactors to get to a state where decommissioning can begin. This is a test case for Just Transition, however, and we need to campaign that over time the workforce is supported to move into sustainable jobs.
As we mentioned in January EDF are hugely in debt. They are desperate to restart production – not least because they have problems with their other AGRs. So they will fight the closure of Hunterston. Adding to their problems though is that, unreported and unmarked in the mainstream media, the Tories at Westminster are in the midst of a U-turn on nuclear. Although for the moment they cling on to idea that Hinkley C can still be built.
In June 2018 we published a briefing on the perilous state of the nuclear reactors at Hunterston and Torness. The reactors at Hunterston have been offline since then while inspection of the graphite cylinders in the reactor core takes place. With around 28% of the core inspected the Ferret has now revealed that 370 major cracks have been found in the graphite core of reactor three and 200 cracks in the core of reactor four. To put this in context there are 3000 graphite blocks in each reactor.
EDF Energy who run the reactors intend to apply for permission to reopen production in March or April this year. In the view of environmental radiologist Ian Fairlie, who spoke at the Scottish Parliament and at meetings in Edinburgh and Glasgow this week such a move is fraught with risk. The level of damage to the reactor cores is such that they should be permanently shut down.
At the Edinburgh talk Ian noted that Hunterston is now probably the oldest operating nuclear reactor in the world. It first generated electricity in 1976 and was designed to run for 30 years. Currently it’s scheduled for closure in 2023. EDF have previously applied for five-year extensions and there is every likelihood they plan to do so again.
The cylindrical graphite blocks are critical to the stability and safety of the reactors. The cracks form in pairs, running the full length of the cylinders and splitting them apart. Under normal conditions the others around them hold the cracked blocks in place. However, a sudden outage, steam surge or earth tremor could result in a serious accident and a large release of radioactive gas. If other safety systems were to fail – and they are untested – there is a possibility of a catastrophic accident on the scale of Chernobyl. The direction of the prevailing wind would take the radioactive plume across Glasgow, Edinburgh and most of the central belt.
EDF are under political and economic pressure to keep the reactors operating. The political pressure comes from Westminster and a strong emphasis on nuclear. The economic pressure is arguably more acute. EDF are in a financial crisis, €37 billion in debt and needing more than €200 billion to bankroll commitments in construction, refurbishment and decommissioning. Hunterston and Torness, when operational, are a significant source of income to the firm.
The continued operation of these aging power stations is a real threat to the lives and well being of the Scottish population. Permanent closure and a focus on renewables is the safe and sustainable alternative.
The latest ScotE3 briefing looks at the uncertain contribution that Scotland’s two ageing nuclear reactors make to energy supply, argues that nuclear has no place in a sustainable energy policy and that immediate steps should be taken to invest in alternatives. Download the bulletin here.