Nuclear Singapore

What if Singapore goes nuclear?

When history goes critical

As we consider nuclear power, here are some of the lessons we should learn from the past.

The Great Acceleration

The Anthropocene

A half-globe floating in the sky, its flat top split between a green city and scorched ground under smoking cooling towers, a man standing on the line between them.

The advent of nuclear technology coincides with the phenomenon known as the Great Acceleration, which is the dramatic and exponential surge in human activity that has visible and tremendous impact on the global environment. The Great Acceleration also marks the beginning of the Anthropocene epoch, though several scholars point to the burning of coal in the Industrial Revolution of the 18th century as the actual origins, particularly the advent of James Watt’s steam engine in 1784.[^30]

Regardless, the Anthropocene—defined as the geological epoch during which human activity becomes the dominant influence on the global climate and environment—remains an important term used in environmental humanities, even if it has yet to be officially recognized (we’re still in the Holocene). Even so, they acknowledge that the Anthropocene remains an invaluable descriptor in understanding the relationship between humans and the environment.[^31] What interests me is that while discussion around the Anthropocene is primarily centered on the increase in carbon content and carbon dioxide emissions, along with other greenhouse gases that lead to climate change and global warming, the spike in human activity that impacted the environment during the Great Acceleration also includes nuclear weapons testing, especially the hydrogen bomb experiments in the 1950s. The radioactive fallout is just as significant a marker of environmental impact by human activities as the burning of fossil fuels and carbon emissions. The Anthropocene Working Group also proposed a boundary marker at Crawford Lake, pointing toward the release of plutonium from hydrogen bomb tests during the 1950s.[^32]

The Anthropocene has spawned more perspectives in environmental humanities on how we should examine the relationship between humanity and the environment, such as Donna Haraway’s Chthulucene, which focuses on interspecies relationships and vast biodiversity that eliminates an ecological hierarchy where humans are ranked at the top. Similarly, Timothy Morton’s concept of the hyperobject is a way to explain how humans attempt to conceive an entity so vast and beyond human comprehension (such as Cthulhu, who can be used as an example of how we interpret hyperobjects as a cosmic horror of astronomical scale). The world doesn’t belong to us alone.

And radiation—nuclear power—can also be understood as a hyperobject. Radioactive materials such as uranium and plutonium have extremely long half-lives, extending to thousands or even billions of years, far beyond the lifespan of any human. To try and grasp this hyperobject of radiation, we often conceive it as monstrous—that is where films such as Godzilla or other kaiju movies, nuclear dystopian games, and science fiction novels and animations come in useful, as they tell us about humanity’s attempts to imagine the hyperobject known as radiation in a physical form we can find understandable.

The concept of hyperobjects is useful in understanding public perception. For most people, radiation is invisible and hard to imagine. However, the visceral image of a cancer patient in a hospital bed is instantly recognizable and sticks with them, and it is this image that is often associated with radiation. Similarly, most people will not conceive of nuclear power at the subatomic scale where microscopic particles collide to fuse into new elements, or split apart. Instead, whenever nuclear power is mentioned, the first thing that comes to most people’s minds is the iconic mushroom cloud billowing above Hiroshima or the Marshall Islands. It is this traumatic sight that seared itself into the public psyche. It is the narratives of the Hibakusha that linger in humanity’s minds whenever it comes to the topic of nuclear.

Hibakusha

As we consider the pursuit of nuclear technology to combat climate change, we should also consider why the public may be resistant to it. Such resistance and reticence are best expressed in Hibakusha narratives—stories of the victims of nuclear weapons and radioactive disasters and how they attempt to cope with such an overwhelming catastrophe. The trauma has been seared into their psyches, and the way the use of nuclear weapons and radioactive disasters are remembered often shapes how the technology is perceived.

They provide clear lessons on how to proceed. Public memory is a powerful force that can influence the trajectory of national policies, and any advancement must be executed with delicacy and respect for those who have suffered the calamitous effects of such fearsome technology. Imagine if I had named this page “Radioactive Singapore” instead. That would elicit a far more negative impression from the public, wouldn’t it? Words come with power, especially the meaning and memories that suffuse them.

The inside of a Japanese wooden house after the atomic bombing: the roof blown away, a broken chest of drawers, a twisted, scorched bicycle, and a shattered family portrait on the floor. Grief Memory Trauma

Small modular reactors

Two long rows of identical small modular reactor modules standing in a bright factory hall under a gantry crane.

Singapore is exploring the option of nuclear power because our aim is sustainable development. Compared to the carbon emissions from our current fossil fuel-based power, nuclear promises cleaner energy with no carbon emissions.

We have a limited range of options for alternative energy sources. Solar energy is currently being rolled out, but the current technology hasn’t allowed us to rely solely on it. Our geographical location means wind power is not dependable, and our lack of natural resources means we have no feasible access to hydroelectricity.

However, given the history of nuclear disasters above, it is essential that we do not plunge into nuclear power recklessly. An accident would be catastrophic, especially given our tiny territory. A 30 kilometer exclusion zone means most of our densely populated country has to be evacuated, and where would we house the evacuees? This is primarily the reason why, for decades, Singapore has never adopted nuclear power.

Fortunately, nuclear technology has continued to advance and improve. Currently, the development of small modular reactors has made it feasible for Singapore to cautiously proceed on a new path. Compact and scalable, small modular reactors are only a fraction of the size of conventional nuclear reactors, yet they are able to generate up to 300 megawatts per unit. They are safer, equipped with advanced features, such as passive safety systems to reduce risk of accidents, and contain significantly less radioactive fuel. That means, unlike Fukushima, there will be less decay heat to manage if the reactor does have a meltdown. Furthermore, they can be prefabricated for easier transport and installation.

PressurizerKeeps reactor coolant water under highpressure to prevent it from boiling. Reactor coolant pumpsCirculate the reactor’s coolant. Steam generatorConverts water into steam to drive aturbine to generate electricity. Control rodsControl the power of a nuclear reactor,which includes shutting down the reaction. CoreThe heart of the reactor where nuclearfission generates heat.

However, the disposal of nuclear waste remains a huge problem in land-scarce Singapore. Worse, a study by Krall, Macfarlane and Ewing discovered that small modular reactors produce between 2 to 30 times more waste per unit of energy than large reactors.[^33] Current options consist of either storage of nuclear waste in a spent fuel pool for between five to fifteen years before sending it to other countries to be extracted, or burying and sealing the nuclear waste in a 2km deep hole.[^34] Perhaps we can explore technology to neutralize radioactive waste, such as nanotechnology. In fact, Belgium’s MYRRHA project is an example of how particle accelerators can transmute waste with long half-lives into shorter-lived material.[^35] Though it’s not ready, perhaps it will be in the future.

Furthermore, Singapore will possibly be able to construct offshore or underground nuclear facilities. This would also mitigate the calamitous effects if any accidents do occur. Theoretically, anyway. In any case, I do think it’s important to consider these three approaches when thinking about nuclear power.

Secure safeguards

Prioritize safety above all.

Combat complacency

Stay vigilant and ensure all measures are in place to prevent accidents.

Reactive response

Have emergency protocols in place to swiftly respond to any issues.

A hypothetical exclusion zone

What happens if a nuclear accident occurs in Singapore? Here’s a theoretical extrapolation of what emergency zones look like.

…

Drag the reactor to anywhere on the map.[^36][^38] Currently, the 4,231,500 residents figure is from June 2026, and covers only Singaporean citizens and permanent residents.[^37] You can switch between the conventional reactor and the small modular reactor, and the latter’s zone is based on NuScale’s approved target of an emergency zone, 0.5 km, in case of any incident.[^39] However, the limitations mean that densely populated places like Changi Airport, Jurong Island, and other non-residential areas are not indicated in the map.

Don’t waste heat waste

All said and done, nuclear reactors—even small modular reactors—generate immense quantities of excess heat, especially when compared to fossil fuel plants. A nuclear reactor has an approximately 33% efficiency of converting heat to electricity, but the rest becomes waste heat that requires water coolant.[^40] In contrast, modern fossil fuel plants are more efficient, being able to convert about 50% of their fuel to electricity.[^41] This leads to less waste heat. Furthermore, some of the waste heat is emitted from the chimney and into the air instead of water. While we strive for a net-zero emissions goal, which is why we’re considering the nuclear alternative, I would like to raise the issue of the urban heat island effect, and Singapore’s rising temperatures since the 1960s.

I’m exploring options to see if there’s a way to make use of waste heat for productive purposes. I hope, by tackling this problem, I can contribute to heat resilience in Singapore. It might seem strange to seriously consider the nuclear option when we consider how reactors might cause more heat issues and temperatures to rise. But if we can harness that heat and mitigate it, wouldn’t it contribute to keeping temperatures cool and maintaining a healthy heat resilience?

Here’s one possibility. While I’m worried about the urban heat island effect, thankfully, studies have shown that a coastal reactor’s waste heat is dumped into the sea, rather than the city. Instead, it’s air conditioning and buildings that heat up the city. I wonder if one possibility is to use the reactor’s waste heat to run cooling in place of electric air conditioners, which will mitigate the heat that’s often dumped into our urban environment. That’s one innovative way of using waste heat to lower the city temperatures, as well as avoiding damage to the marine life by dumping it into the sea.

Drag each part into its socket in the reactor, or click a part and then its socket.

Heat source
Heat tap
Machine
Storage

Nuclear fusion

Can we make science fiction a reality?

You probably have heard of the nuclear fusion reactor, which is heralded as the Holy Grail of clean energy. Harnessing the same reaction that powers the sun, nuclear fusion merges two light atomic nuclei into a new element, e.g. hydrogen to helium. The resultant energy it releases is immense, and there is abundant fuel for it—the deuterium it uses can be easily extracted from seawater. Moreover, it produces far less and shorter-lived radioactive waste compared to fission reactors. Like fission reactors, fusion reactors also promise clean energy as they do not produce any carbon emissions.

The issue, though, is creating a sustainable confinement device that can withstand the plasma created. Plasma is a fourth state of matter, formed when gases are heated to a few thousand degrees Celsius. However, in a fusion reactor, it is heated to temperatures way beyond that—over 100 million degrees Celsius—and currently, no physical matter can contain it. Therefore, creating a fusion reactor means relying on something like a tokamak, which uses powerful magnetic fields to suspend and control plasma.

Click the reactor

Where does Singapore come in?

Though not a part of ITER, Singapore is involved in various nuclear fusion projects. The Nanyang Technological University has a $6 million professorship funded by Temasek in 2021,[^53] and the National Research Foundation funds an $11.6 million fusion program that runs plasma simulations.[^54] Temasek has also invested in Commonwealth Fusion Systems,[^55][^56] who A*STAR also signed a five-year deal with to develop technology for commercial plants.[^57]

Singapore might not be building its own fusion power in the near future, but by investing in the companies and building the skills needed, who’s to say we won’t in the far future? With the Energy Market Authority studying the feasibility of using sites on Pulau Tekong to build hydrogen-ready natural gas plants in the 2030s,[^63] it’s likely that these will eventually be retired around the 2060s. By then, it’s possible we will have developed usable nuclear fusion technology, and we can replace those plants with fusion reactors. By reusing the land—reserved for heavy energy use and a good distance from residential areas—as well as the existing grid connections, steam turbines and seawater cooling, it’s plausible that we can replace those gas plants with fusion—and the plants built for hydrogen will already be handling the necessary fuel for nuclear reactors that run on hydrogen-boron fusion. Clean energy within the next five decades!

This is a simplified plasma simulation that shows how a tokamak works. Our simulation allows you to change the heat and density, and swap between two machines. Real simulations have far more settings for their magnets, though. They allow researchers to run the same plasma under the different strengths of magnetic fields, to see if they can achieve the same plasma containment results with smaller machines than ITER.

Fusion power[^58]
Pressure[^59]
Density[^60]

Machine figures: ITER,[^61] SPARC.[^62] We use average values across the plasma, but note that real plasmas are hotter and denser at the core.

A fusion reactor that loses control simply peters out instead of melting down, as there is no chain reaction. This makes it comparatively safer than fission reactors, where a rampaging chain reaction or heat-emanating fuel despite shutdown can lead to a meltdown.

Nuclear disaster in popular imagination

Films, games and literature depicting nuclear apocalypses or the threat of one are important because they are expressions of social anxieties the public faces when confronted with nuclear technologies and disasters.

Use the arrow keys to walk. Press E for breath attack.

Arrow keys to walk · E for breath attack · Esc to close

Click to play

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