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Chaturanga

~ statecraft, strategy, society, and Σοφíα

Chaturanga

Tag Archives: Comptroller and Auditor General

Nuclear Power and its Discontents

29 Tue Dec 2015

Posted by Jaideep A. Prabhu in India, Nuclear, South Asia

≈ Comments Off on Nuclear Power and its Discontents

Tags

AERB, Atomic Energy Regulatory Board, CAG, Comptroller and Auditor General, DAE, Department of Atomic Energy, India, NPCIL, nuclear, nuclear energy, Nuclear Power Corporation of India Limited

With India hoping to follow China in its rapid and mammoth nuclear power expansion, it merits consideration whether such an expensive yet foundational project is feasible. There are many shortcomings of nuclear power, though none of them are what are commonly perceived: though nuclear critics constantly wail from an outdated playbook about radiation, nuclear waste, and accidents, far more realistic problems are financing, regulatory processes, industry-wide deterioration of skills, and transparency. These deficiencies of nuclear power will become a millstone around India’s neck if not addressed soon and adequately. These shortcomings are not merely the responsibility of the industry; in some areas, the government must also play an active and positive role if it genuinely wishes to develop a source of clean, abundant, reliable, and safe energy.

It is true that nuclear power plants are expensive; although nuclear power itself is quite price competitive with other sources of electricity, the economics of nuclear power plants is such that most of the cost of the project – over its entire life – are demanded upfront. The costs of thermal energy are evenly spread over the life of a plant – usually 30 years – whereas the cost of nuclear fuel is a miniscule component of nuclear energy and market price fluctuations hardly affect the cost of electricity unlike with hydrocarbons. Furthermore, nuclear plants are built to last for 60 years, twice the lifespan of thermal power and thrice the duration of solar farms; nuclear regulatory authorities worldwide are looking at the latest nuclear power plant designs and considering extending the potential life of a reactor to a minimum of 80 and a maximum of 100 years. Another factor adding to the cost of nuclear power is that estimates made consider nuclear waste – whether it is stored or reprocessed – and decommissioning. Fossil fuel has so far managed to get off without paying for the massive pollution it causes, in effect subsidising its operations.

This over-engineering raises the initial cost of nuclear power plants. Though the figures periodically released to the Lok Sabha by the Department of Atomic Energy (DAE) indicate that nuclear energy is competitive with other sources of energy over its lifetime, the high initial cost creates a financial burden few are willing to or capable of taking. Investors are usually not so sanguine on projects that have a long gestation period and the return on investment is low. In a more market-oriented world, the nuclear industry must address this issue if it is to win over any critics. One idea the industry has been playing with is making reactors smaller. The sacrifice in economy of scale is hoped to be compensated by creating modular components that can be fabricated faster and the smaller size will make them suitable not just around urban concentrations but even for use in more sparsely populated or rural areas. Some entrepreneurs are even toying with production line manufacturing on nuclear power plants. If it works, the speed of construction should increase drastically as well as the cost come down; together, these improvements will make the cost of financing more attractive to lenders and inspire greater interest in nuclear power.

The government, for its part, can also make financing of nuclear power easier. In China, for example, the China National Nuclear Corporation (CNNC) raised $2.5 billion in May 2015 through an IPO in the Shanghai stock market. Delhi’s reticence to allow any public scrutiny of the nuclear industry – financially, technologically, or administratively – only hampers the nuclear public sector undertaking from realising its full potential. Financial streams from the private sector are also forbidden and it was only a couple of weeks ago that an amendment to the Atomic Energy Act was passed to allow even other PSUs to invest – from a distance – in the nuclear sector! In 2012, there was a proposal to divest some 10 per cent from the Nuclear Power Corporation of India (NPCIL) and list it on the bourses but like many files in the Indian bureaucracy, little has been heard of it since.

A second obstacle the nuclear industry faces is the regulatory authority. In the United States, the complaint of the nuclear industry is that the process for the approval of new reactor designs is laborious, expensive, and sometimes done with criteria that reflects older knowledge than the latest developments in the industry. In India, the hurdles start sooner – in that the Atomic Energy regulatory Board (AERB) is not a body independent of the chain of command of those it regulates. Several members of the DAE have stressed on previous occasions that this administrative quibble does not in any way impinge upon the working of the regulatory authority but in a country like India where command influence and the flouting of laws is not at all uncommon, even the appearance of impropriety is reason to worry. Over decades of governmental misconduct, citizens have lost faith in government institutions and in areas like nuclear energy where the scope for damage is enormous, unflattering reports from the Comptroller and Auditor General (CAG) such as in 2012 are damning.

India is developing a 900 MW Light Water Reactor (LWR) and its Fast Breeder Reactors (FBR) have been close to criticality for at least three years now and awaiting regulatory clearances; the thorium-powered 300 MW Advanced Heavy Water Reactor (AHWR), a technology demonstrator, has been ready to break ground for a few years now. The Russian 1,000 MW VVER at Kudankulam I that shut down for routine maintenance has had its restart delayed, allegedly for thorough regulatory inspections. Each time, the nuclear establishment conveniently hides behind safety inspections – no one can fault the agency for due diligence and yet no one is clear what exactly causes the never-ending delays.

Perhaps the single greatest problem that faces nuclear power is the deterioration of skills in its workforce. This includes not just the engineers in the control room at a plant but the cement mixers, welders, and the dozens of other professions involved from the groundbreaking until the commissioning. Nowhere has this been more apparent than at Olkiluoto, the site in Finland where Areva is building its latest 1,650 MW reactor, the EPR. The crew did not have a proper understanding of nuclear safety, there was poor communication, problems witnessed were not immediately addressed, many of the workers were not trained in nuclear-grade construction, and the chain of command was unclear. According to industry reports, these problems arise from a lack of experience in nuclear construction: Europe had gone through a nuclear lull for 15 years and many of its best engineers and specialists had migrated to other industries since the last reactor was built.

India’s pace of nuclear construction has been lethargic at best, constructing only 20 reactors in the 46 years since its first civilian reactor went critical in 1969. It is only with a large and regular orders that the nuclear industry in India will be able to overcome its umpteen issues and streamline its efforts to reduce construction delays and improve quality. An example of this can be seen in the United Arab Emirates, where the experience of working on multiple reactors simultaneously has enabled efficiencies between construction sites. The Indian seems to have noticed this too, with reports on imminent nuclear agreements with Rosatom and Westinghouse suggesting that six reactors will be built at once rather than the traditional India two-at-a-time. Nonetheless, efficient nuclear builds require a decent tempo and given India’s shortage of power and commitments to clean energy, this ought not be a problem. The era of taking over a decade to construct one reactor, however, must be left behind.

The root of many fears about nuclear energy comes from a lack of transparency in the establishment. Nothing shuts mouths or doors faster on a researcher in India than mentioning the word, ‘nuclear.’ Despite their claims to openness, the DAE remains remarkably opaque to outsiders. From exploration for uranium to reprocessing, the Indian establishment reveals little about its civilian programme under the guise of security. So far, this policy has done a better job at covering incompetence than actually increasing security. Some of the more informative studies of the Indian nuclear programme, as a result, come from foreign think tanks who employ scientists to monitor nuclear developments worldwide. From observations that mean little to the uninitiated, these scholars have painted a picture of the Indian nuclear programme beyond what the Indian government reveals to its own citizens.

Most of this secrecy is unnecessary and only breeds suspicion in the minds of the public. The fantastic tales of malfeasance within India’s nuclear conclave gain weight only because it is difficult to know what to believe. The CAG has upbraided NPCIL on its resistance to greater transparency yet there seems to be little done to ameliorate the situation. This is not entirely within the hands of nuclear scientists and administrators – the laws of the land could well land them in jail if they were to actually embrace a more transparent work ethic. Some have suggested that greater public awareness is required but on this, it is difficult to fault the Indian nuclear establishment – although more can always be done, there has been an impressive array of events at various levels by the various nuclear agencies to reach out to the public and explain the basics of nuclear physics and safety. However, these efforts do not extend to questions on policy, processes, or administration. Wherever the fault lies, the DAE has a Herculean task before it to rectify the perception that it may or may not know what it is doing behind closed doors.

These are the main challenges ailing nuclear energy and those old concerns from the 1950s that make for more scintillating headlines – if the nuclear industry can address these four issues, they would be in a much better position to power the country to a cleaner, cheaper, and more energy-secure future. However, as one nuclear engineer with almost three decades of experience told me, how a society handles the first set of concerns from the six decades ago is usually a good indicator of how they will approach the real challenges today.


This post appeared on FirstPost on December 31, 2015.

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Nuclear Energy in India – A Primer

23 Fri Aug 2013

Posted by Jaideep A. Prabhu in India, Nuclear, South Asia

≈ 2 Comments

Tags

AERB, Atomic Energy Regulatory Board, CAG, Chernobyl, CLNDA, Comptroller and Auditor General, DAE, Department of Atomic Energy, fission, Fukushima Daiichi, IAEA, India, Indo-US nuclear deal, International Atomic Energy Agency, Kudankulam, Non-Proliferation Treaty, NPCIL, NPT, NSG, nuclear civil liability, Nuclear Suppliers Group, plutonium, thorium, Three Mile Island, uranium

Nuclear energy has been in the news a lot in recent years, from Iran’s alleged nuclear weapons programme, India’s agreements with the United States, the International Atomic Energy Agency, and the Nuclear Suppliers Group, Fukushima, and at home, Kudankulam. Yet there is much fear, confusion, and ignorance about even the basics of nuclear energy or weapons. Here is a very quick primer on how ₹ 8,500 crores of your money is being spent.

1. What is nuclear energy?

All power plants other than solar essentially turn turbines to generate mechanical energy which can then be converted into electricity. Hydroelectric power uses the kinetic energy of falling and/or running water, wind power uses air currents, and fossil fuels generate steam upon burning, which turns the turbines. Nuclear energy uses the energy released by the fission of an actinide, usually uranium (but plutonium and thorium are also considered nuclear fuels), to turn water into steam which would in turn rotate the turbines to produce mechanical energy and eventually electricity.

2. How does a nuclear power plant work?

This depends on the type of reactor design, but essentially, the nuclear fuel is bombarded by a stream of neutrons. As the heavy uranium atom splits, it releases energy and more neutrons. This starts a chain reaction as the new neutrons split more fuel atoms. In a nuclear weapon, designers maximise the number of fissions by using very pure uranium and other techniques, but in a nuclear reactor, the idea is to control the chain reaction and sustain it. To that end, engineers use moderators and neutron poisons to control the number of fissions that occur. Also, the fuel used is a fraction of the purity required to make weapons. However, reactors used for propulsion, such as on submarines and aircraft carriers, use much higher concentrations of fuel. This helps to miniaturise the reactor as more energy is generated per unit mass of fuel.

In some reactors, the heat from the energy released by fission is carried away from the reactor core by a coolant and used to generate stem; in other reactor designs, the core heats the water directly. Both these methods have their advantages and disadvantages, but the principles remain the same in all reactors.

3. Why is everyone talking about nuclear energy as the future?

In the era of climate change, scientists are worried about the footprint humans leave on the planet’s ecosystem. Species go extinct, water is contaminated, air polluted, fish becomes scarcer, and the population inches ever upwards. Though there are still many questions regarding the causes of climate change, the impact of pollution on our lives is clear to see. Nuclear power offers abundant energy without the corresponding carbon emissions fossil fuels emit.

Power engineers divide electricity supply into two main components – base load and peak load; the former refers to the minimum amount of energy consumed at any point by an area and the latter refers to the maximum. Obviously, these needs fluctuate depending upon time of day and region – for example, industrial areas use more power than residential zones. Nuclear power is the most reliable substitute for fossil fuels to provide steady power in large quantities throughout the day. While other sources can augment nuclear power, they have their inherent limitations such as the sun and wind.

Another important quality of nuclear power is the energy density of uranium, which is about two million times higher than coal. Even after adjusting for fuel enrichment, efficiency, and conversion loss, one kilogramme of uranium yields the same amount of energy as 20 tonnes of coal. This makes uranium ideal for transportation. In addition, given the fraction of the total cost of a nuclear power plant the fuel represents, even sharp fluctuations will leave electricity prices relatively unaffected.

4. Are nuclear power plants safe?

Any professional in any industry would tell you that risk cannot be eliminated, only managed. So if your definition of safe is that nothing ever goes wrong, then nothing is safe. However, in terms of engineering standards, nuclear power is among the safest technologies in the world. Nuclear power is responsible for approximately 10% of the world’s energy and as of the beginning of this year, there are 437 reactors operational worldwide with another 68 under construction.

Anti-nuclear activists argue that the consequences of radiation leaks or structural damage to reactors for any reason are too grave to make nuclear power viable. Furthermore, storage of spent fuel is a concern. While this is technically true, it carries little weight practically. For example, deaths caused by nuclear power since the first civilian nuclear reactor went online in 1954, including Chernobyl, are approximately 67; about 4,000 people were later diagnosed with thyroid cancer due to radioactive iodine in milk, most of whom could be cured.

If these deaths are compared to the thousands that die on the job every year due to accidents in coal mining, natural gas, and hydroelectric power plants, nuclear power turns out to be the safest option. This is not even counting the 115,000 premature deaths per year in India alone due to respiratory problems caused by coal; over 22,000 die in Europe, and almost 84,000 in just three provinces of China.

5. What are the benefits?

Nuclear power releases very little particulate matter emission and the fuel is amenable to easy transportation. In addition, nuclear power promises reliable and bountiful energy for centuries given new generation reactors that are capable of greater efficiency and able to consume plutonium, thorium, and even other actinides. Nuclear power does not take up precious land resources as wind and solar would need.

6. What does it cost?

The honest answer is that no one knows or everyone is lying. Nuclear costing is an extremely frustrating topic of research. First, it depends upon the type of reactor. Present reactors such as Toshiba-Westinghouse’s AP1000 or Areva’s European Pressurised Reactor range in cost from $4 billion to $11 billion. These costs depend on many factors – cost of land, source of components, insurance, labour, administrative delays, safety features required by site, security, load factor, waste disposal, and decommissioning to name a few.

Costs are further obfuscated by financial sourcing; there may be government subsidies to encourage the industry, or certain imports may earn tax credits. It is a time-consuming task to go through every detail of an upcoming nuclear power plant. Some try to add financial costs, operating costs, and system costs – connection to grid, life extension, backup power – to inflate prices to appear unacceptable. Whatever benchmarks are used, they should be used across industries – compare the environmental and health effects of coal, oil, wind, solar, and hydropower alongside nuclear waste disposal. One thing that is apparent, however, is that nuclear power plants have enormous capital costs upfront and low operating, maintenance, and fuel costs.

India has the added deterrent to transparency that all information about anything nuclear is a “born secret.”

7. What was the fuss over the Indo-US nuclear deal about?

India had been a pariah in the nuclear community ever since its first nuclear test at Pokhran in 1974. Its second round of tests in 1998 brought with them sanctions in high technology trade, educational exchanges, and various other activities. The Indo-US nuclear deal reversed four decades of nuclear apartheid against India and accepted it into the international nuclear market. Finally, India was allowed to buy reactors and fuel from other countries. Although the possibility of technology transfer exists, particularly enrichment and reprocessing, it remains a highly sensitive issue.

In exchange for this, India had to agree to separate its civilian facilities from its military facilities and allow regular inspection of its civilian establishment by the IAEA. India can enrich and reprocess its own fuel in its own reactors, but foreign-sourced fuel and technology may not be used.

India is the only non-signatory of the Nuclear Proliferation Treaty that has been granted these privileges, making it, some say, a de facto member of the N-5 (five recognised nuclear powers). However, the United States has stressed that India is not a de jure member and that is all that matters. In addition, the N-5 have certain benefits that India does not have: they have no compulsion to allow IAEA inspections, and they can change the designation of their nuclear facilities as military and civilian at any time.

8. I have heard something about this nuclear civil liabilty…?

Any venture requires insurance. India’s Civil Liability for Nuclear Damages Act  creates the framework within which nuclear power plants may be operated. India’s rules on this deviate from the international norm in that India allows the liability for damages to go all the way back to the supplier whereas the operator is usually the final stop. This has caused much concern among international reactor suppliers such as Toshiba-Westinghouse, GE-Hitachi, Areva, and Atomstroyexport. As a result, the fruits expected from the opening of the civilian nuclear market to India have not been as forthcoming.

There are other issues with the CLNDA of which one is the high insurance liability limit upon the operator. Given the minuscule size of the nuclear industry in India, there is an insufficient asset base to pool risk. As a result, the present ₹500 crore limit, though on the lower side, is too high for a fledgling industry.

9. People keep mentioning Homi Bhabha’s three-stage nuclear programme…?

India’s first nuclear footsteps were taken even before independence in 1944 when Homi Bhabha wrote to JRD Tata for funds to set up what would become the Tata Institute of Fundamental Research. Seeing that India did not have an abundant supply of uranium, Bhabha theorised that thorium could be used as nuclear fuel instead of uranium. India had plenty of thorium and would thus be independent of the vagaries of international nuclear politics.

In the first stage, natural uranium (U-238) would be burned with heavy water as a moderator. One of the by-products of this process would be plutonium, which would be used in the second stage in a mixed oxide fuel (MOX) mixture with more natural uranium. In this stage, the plutonium is burned to induce transmutation in the natural uranium to make more plutonium than is burned. Once a sufficient stock of plutonium is created, thorium can be introduced into the reactor as a blanket to undergo transmutation into U-233, another fissile isotope of uranium. In the third stage, the reactor would be fuelled by a mix of thorium and U-233. After the initial fuel loading, the reactor can then continue on only thorium.

There are some scientific disputes over how long it will take for India to build up a sufficient plutonium inventory. While the Department of Atomic Energy is confident that it can be achieved in about ten years, critics say it is more likely to take 70. US scientists agree with the DAE’s estimates if certain fuel choices are made and technologies used, but given India’s inefficient nuclear infrastructure, a decade might be on the optimistic side.

Thorium reactors are significantly safer than present reactors. They burn fuel more efficiently and generate less waste, are useless as sources of fissile materials for a weapons programme, and the waste generated is far less radioactive and for less time.

10. What happened at Chernobyl, Fukushima, and Three Mile Island?

The Three Mile Island incident happened in 1979. In essence, a mechanical failure of a valve allowed large amounts of coolant to escape from the reactor. As a result, the reactor overheated and a partial meltdown occurred. No cancer has been detected in the surrounding population as a result of the accident, and 98% of the people in the area were confident enough to return to their home within three weeks of the accident. One of the reactors at the two-reactor complex is still functioning.

The Chernobyl disaster took place in 1986. Everything that could go wrong went wrong at the worst nuclear disaster in history. First, the RBMK reactor had no containment building to prevent radiation from leaking in case of an accident; second, the reactor design was inherently unstable – while reactors are usually designed with a negative temperature coefficient (as coolant overheats, power output falls and reactor cools), the RBMK was designed to do the opposite; third, the backup cooling system was offline on the fateful day for maintenance; four, more control rods (which manage the amount of neutrons and fission activity in the reactor) were removed than was allowed; and five, the main cooling system was switched off for an unauthorised steam turbine test.

The Fukushima Daiichi disaster took place in 2011. The six-reactor complex was hit by an earthquake and then a tsunami caused by the aftershock. Three reactors were powered down, and the remaining three shut down as soon as the earthquake hit. Unfortunately, the tsunami flooded the facilities and damaged the generators responsible for the cooling systems. The reactors overheated and several hydrogen explosions took place. It was later revealed that a study on tsunami preparation done four years earlier had been ignored as unrealistic. While some 19,000 people died in the earthquake and subsequent tsunami, no one has yet died of radiation effects from the accident.

These are the three worst nuclear disasters in its history of 60 years, all resulting in significant upgrades in the nuclear industry. In all cases, the damage was significant but not catastrophic; importantly, they all follow the trajectory of every other human invention – improved efficiency, capacity, and safety. Imagine if the Wright brothers given up on flying because it was too dangerous! Nuclear power may not be without risks, but if Three Mile Island, Chernobyl, and Fukushima are the worst examples, there is much less to worry about with the increasing safety standards and even safer technology.

A point to note: reactors do not blow up; the physics simply does not allow for it.

11. Why is there so much agitation over Kudankulam?

If one has to fear nuclear power in India, it must be over the opacity of the programme than the technology or its management. And ignorance breeds fear. What is needed is far greater transparency of the entire civilian nuclear process. Interested and knowledgeable parties may keep vigil over the country’s nuclear facilities and act as an additional watchdog over the DAE. India’s nuclear industry has so far failed spectacularly to take the citizen into confidence and reassure him/her of the benefits of nuclear power and the safety precautions taken.

The absence of an independent nuclear regulatory authority gives little cause for comfort, and the findings of the Comptroller and Auditor General of India’s report last year is no bearer of good news either. Given how government bureaucracies work in India, there can be little surprise that there is a lot of suspicion about the claims made by the Nuclear Power Corporation of India. Interestingly, the IAEA’s audit of India’s nuclear facilities in Rajasthan last year declared that India’s reactors were among the “safest and the best” in the world with sound procedures the world could learn from.

12. What can I read for more information?

Depends. There are many angles to this – history, policy, reactor design, safety, environmental issues, terrorism, new generation fuels and designs, general awareness, and slightly off but still related, weapons. One place to get the basics is here.


This post appeared on Daily News & Analysis on December 31, 2013.

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