FNPP stands for a floating nuclear power plant. It consists of a floating power unit (FPU) – based on Russian nuclear shipbuilding technologies, it is a special barge equipped with advanced safety and reliability parameters to the reactors on board – as well as coastal infrastructure implemented at the mooring site (breakwaters, power lines, etc.). The “Akademik Lomonosov” FNPP is the lead project in a series of low-power transportable power units.
What makes FPUs unique is that they are built, from start to finish, in shipyards, using the same expert construction technology as on nuclear icebreakers and Navy ships. Moreover, the floating design of the power plant lowers capital cost construction in the area where the nuclear power plant (NPP) is located.
Essentially, the FNPP is like a large nuclear-powered icebreaker (it is installed with the same type of reactors that have decades of safe operations on icebreakers). The only difference is that the power from the reactor isn’t used for safe passage through the Arctic sea but to power remote regions, where it is practically impossible to transport electricity mains to by land.
FNPPs can be used to provide power to islands, desalination facilities, and hard-to-reach coastal areas both in the North and the South.
Half of the 4 million people who live in the world’s Arctic regions are in Russia. Most of the settlements in the Far North are hard-to-reach; they are isolated “energy islands”, cut off from the national grid. Currently, their main source of fuel comes from coal and oil, which has an extremely negative impact on the environment. Air and water pollution harms valuable ecosystems, leading to a reduction in human life expectancy, as well as the extinction of entire species and living organisms.
Those who oppose nuclear energy argue that it is possible for people in the Arctic, especially off the Siberian coast, to completely rely on renewable energy sources – replacing oil and coal with solar panels and wind farms. Their argument, however, is untenable.
In most of the inhabited territories along the Siberian Arctic coast, the average daily wind power is extremely low - the annual average speed does not exceed 3 to 3.5 metres per second (m/s) (or 6.7 to 7.8 mph). Power cannot be generated from wind turbines at wind speeds below 3 m/s. Moreover, permafrost makes installing wind turbines extremely difficult and expensive. High humidity and low temperatures cause wind turbine blades to be covered in ice. The experience of operating such wind farms in the Novaya Zemlya archipelago and the Yamal Peninsula, despite the high cost of installation and maintenance, has shown that the farms only operate at 15-20% capacity maximum and have to rely on backup energy sources – oil and coal – when wind intensity is low.
As for solar panels, they would only be operational for half of the year when the Arctic experiences what’s called the polar day (when the day lasts more than 24 hours). They also require constant maintenance – snow cleaning and de-icing. During polar night periods (when the night lasts more than 24 hours), and in times when the sun is obstructed by heavy snowfall, the lack of electricity generation from solar panels again must be compensated by burning coal and oil. On the other hand, small nuclear energy, namely floating nuclear power plants, can reach inaccessible Arctic areas and provide remote settlements and facilities with an uninterrupted source of clean energy. Therefore, reducing the region’s dependence on oil and coal, leading to a reduction of harmful pollutants, substances and millions of tonnes of greenhouse gas emissions.
The “Akademik Lomonosov” FNPP will not only replace the decommissioned Bilibino NPP, but also the working Chaunskaya Power Plant that uses brown coal as fuel – probably the most harmful type of fuel. There are over 50,000 people who live and work in the region, so, this is not only about long-term sustainable development – which is impossible without a stable energy supply – but also about the region’s energy security. So, as well as ensuring the elimination of harmful emissions in the Arctic ecosystem, “Akademik Lomonosov” is also a guarantee that the region’s inhabitants will not be left without light and heat in the freezing Far North.
The Northern Sea Route (NSR) will connect European and Far Eastern Russian ports, including those located in the mouths of navigable Siberian rivers. It is predicted that the NSR will reduce traffic on the ‘traditional’ Suez Canal route by about 34%. However, the Arctic region can only be made safely navigable with the existence of an appropriate infrastructure and stable regional energy supply.
The city of Pevek, where the FNPP will be moored, is one of the key ports along the NSR. The deployment of the FNPP in Pevek will provide the right conditions for accelerated socio-economic growth in the Chukotka region, as a whole, to fit the needs of the NSR project.
The FNPP will, therefore, be a key infrastructural element in the NSR development programme, as not only will it provide energy but also heat to the Far North ports, where it is planned for NSR traffic to pass through.
This is a fallacious argument.
The FNPP provides remote regions with clean energy, which can be used both to supply energy to households and to industrial facilities. If the mineral resources sector is a significant part of the economy in any given region, then electricity will be consumed by that sector, regardless of the energy source. The same would apply if the source came from wind and solar power. Applying the same logic, one can argue that installing solar panels on oil tankers is contrary to sustainable development goals – yet it is obviously not the case.
The absence of the FNPP will not force oil and gas companies to abandon mining ambitions. Instead, they would rely on diesel-generated drilling platforms – a source of additional CO2 emissions.
Besides, oil and gas are primary resources for advanced petrochemical products vital to our daily lives, including medicines, agricultural fertilisers and so on; according to the International Energy Agency, petrochemical products are also found in “solar panels, wind turbine blades, batteries, thermal insulation for buildings, and electric vehicle parts”, all of which are pivotal to sustainable development.
Nuclear energy saves hydrocarbon resources for better and cleaner use.
The mere placement of nuclear reactors on ships is nothing fundamentally new. Nuclear icebreakers have been operational in the Arctic for many years now, installed with the same small nuclear reactors as the one that will be operating in the FNPP.
In short, FNPP reactors have been tested and proven to operate safely over decades on nuclear icebreakers. Yet, “Akademik Lomonosov” has the added benefit of operating in safer conditions than icebreakers. Icebreakers float through thick ice many kilometres from the coastline, but the FNPP will never be in motion, as it will be moored to a special pier and stay there. Additionally, the FNPP has a simpler design to the nuclear icebreakers and submarines. The FNPP will be moored and secured to a special pier, without any in-built motion capabilities (no motor or propeller functions). This means that there is no risk to the FNPP of any self-propelling system failure or any other emergency situations related to mobility functions.
The FNPP is designed in such a way that even in the face of a severe accident the probability of radioactive substance leaking into the environment is absolutely negligible.
Firstly, FNPP reactor technology (pressurised water reactors) is fundamentally different to the RBMK-type reactors (graphite reactors) that exploded at the Chernobyl NPP. Pressurised water reactors are the most widely used and safest nuclear technology in the world. Unlike the RBMK, the reactor core of a pressurised water reactor – i.e. the part of the reactor where nuclear fuel generates energy – is surrounded by a protective containment shell, which ensures that Chernobyl-type release of radioactive substances simply cannot occur with these types of reactors. It is also important to remember that the accident at the Chernobyl NPP occurred when the main reactor safety systems were deliberately shut off – modern systems have been designed to eliminate such risk.
Secondly, the nuclear energy industry, as a whole, learnt its lessons from the Chernobyl accident and improved technologies and regulations accordingly. Similarly, IAEA and national regulator requirements were further tightened after Fukushima. Adhering to both post-Chernobyl and post-Fukushima safety requirements, the FNPP meets the highest safety standards.
All Russian and international safety standards were observed when designing the “Akademik Lomonosov” FNPP. In particular, the safety parameters followed the Russian regulatory document “General Safety Provisions for Nuclear Power Plants on ships” and the IAEA post-Chernobyl INSAG-3 “Basic Safety Principles for Nuclear Power Plants”.
According to these documents, the probabilistic safety assessment (PSA)-estimated cumulative probability of core damage should not exceed 10-5 reactor-years.
Peer-reviewed PSA modelling showed that the damage probability to the “Akademik Lomonosov” FNPP reactor core, the so-called large early release frequency, does not exceed 10-7 reactor-years – i.e. the chances of a serious accident at the FNPP are less than one hundred thousandth of a percent.
For comparison, astronomers estimate that the probability of a giant asteroid destroying our planet in the coming decades is 1.6 in 10-5 – in other words, it is 160 times more likely for that to happen than for there to be a severe accident at the “Akademik Lomonosov” FNPP.
The last radiation accident on nuclear floating facilities in Russia happened in 1985 on the K-431 submarine (before the accident at the Chernobyl NPP and all changes made to safety requirements since). In the last 34 years, not a single incident has led to a nuclear reactor related accident, nor to any leak of radioactive substances. This includes the K-141 Kursk nuclear submarine tragedy which suffered severe damage due to a torpedo explosion. The lack of nuclear-related accidents is a testament to continuous nuclear technological advancements, especially in the field of safety and security. During the development and production of the “Akademik Lomonosov” FNPP all safety design parameters were applied to all stationary and operational elements of the project.
Determined to ensure the safest and most environmentally friendly source of power for the area, we took into account all possible and even the most unlikely extreme scenarios when developing the FNPP’s design and strength of its structures.
Coastal and hydraulic structures have been installed to provide additional protection against tsunamis. Dams and breakwaters have been installed, making colliding with icebergs practically impossible, and coastal infrastructure prevents any possible impact either against the shore or the sea floor.
We have tested the reliability and stability of the FNPP to withstand seismic impact of 10-12 on the MSK-64 scale and vertical acceleration of 1.8 m/s2.
What is more, the FNPP is able to withstand a 10-ton helicopter crash.
The FNPP is divided into 10 watertight compartments and will remain afloat even if two of them are flooded (even if the two compartments are adjacent to each other). The maximum list of the vessel in this case will only be 3°. The reactor itself is located at the centre of the ship’s hull, strongly protected by heavy-duty materials. It is worth noting, that the FNPP can withstand a crash, or deliberate ramming, from another ship and still stay afloat.
In the extremely unlikely event of the FNPP sinking, emergency reactor shutdown mechanisms have been installed. The reactor will be shut off automatically without an operator having to intervene, thanks to passive safety systems.
In case of flooding, using special springs, one of these passive safety systems instantly and automatically discharges emergency protection rods into the reactor core. This ensures that the reactor remains at a safe level of subcriticality, thereby preventing a Chernobyl-type accident. The FNPP is also equipped with a basic passive safety system installed on all land based NPPs where protection rods are discharged by gravity. This passive safety system will come into effect if the Plant is not flooded and under normal gravitational conditions.
In the case of flooding, natural coolant (water) circulation ensures that the reactor core will not melt. This coolant removes any residual energy from the reactor core and does not rely on pumps or human intervention to do so.
In short, any system failure that the FNPP may suffer will not lead to an accident. Even in the absolutely unbelievable event that all active (operator-driven) safety systems fail simultaneously, the passive safety systems ensure reactor shut down and makes it watertight, preventing any radioactive substance leak.
“Akademik Lomonosov” is a secure facility, subject to the same security measures as any ‘traditional’ land based NPP.
The security system of the FNPP is divided into three zones: ‘water’ (protected by dams, breakwater and other structures), ‘ground’, and ‘floating power unit (FPU)’.
The ground and the FPU zones can only be accessed with an approved security pass. There are video surveillance systems and alarms, as well as emergency communication channels. We have a long history of guarding land based NPPs, as well as sensitive facilities in the Far North, the organisation of our posts and patrols, therefore, will be based on this experience.
In the water zone, monitoring and radar systems, that have been repeatedly tested on nuclear-powered icebreakers and submarines, deny unauthorised penetration and defend against unexpected attacks from sea and air. Security services have all the military equipment required at their disposal to eliminate any risk of a plane or ship crashing into the FNPP.
In the extremely unlikely event of an accident, water supplies give the operator time to take the necessary actions, and passive cooling systems (natural circulation) are in place to cool the reactor unit, keeping the molten fuel inside the unit so that it is not damaged.
In the unlikely event of a severe fuel melting accident, the most important task is to keep the molten mass inside the reactor vessel - containment shell. The FNPP has been installed with a special emergency cooling system for the hull, which fills the reactor shaft with cold water (passive reactor vessel bottom cooling system). It is designed (and has been verified by calculations and bench tests) to prevent the reactor vessel from melting, ensuring that the reactor vessel remains intact even if the core melts, thus preventing any chance of a leak.
There is also an independent alternative reactor vessel cooling system which, in the event of a severe accident, will inject additional volumes of water or, if necessary, a special cooling solution inside the vessel to keep it from melting.
All emergency scenarios were repeatedly modelled and tested.
The reactor’s design is such that, even in a severe accident and core melting, the intensity of ionising radiation and the volume of water in the area during radiolysis (the decay of chemical compounds as a result of radiation exposure), given the FNPP reactor’s capacity range, will prevent atomic hydrogen from forming to the amount necessary for such an explosion.
The reactor compartments have also been specially designed to withstand any increased pressure produced by excessive steam, eliminating any risk of a steam explosion.
Nuclear fuel will need to be reloaded every 3 years. The unloaded fuel will remain on board the FNPP. First, it will be stored in a storage pool and then in dry containers – at no point will it be taken ashore. There is a whole complex for spent fuel storage on board the FNPP. Once the FPU is towed to a special facility for planned maintenance (this will occur several times during the FPU’s lifecycle, the first of which is planned 10-12 years after start-up), the fuel is discharged from the FPU and sent for processing. After the repair is completed, the empty FPU will be sent back to Pevek (or wherever it is moored).
This spent fuel and waste management system completely eliminates the risk of any radioactive leakage into the environment.
When designing our SMR we compare our product with conventional generation sources like coal or gas to ensure its competitiveness.
There's no denying that NPP requires more upfront investment but, unlike wind turbines and solar panels - which normally only operate at 15-20% of their installed capacity with a service life, especially in the Arctic, of just 20-25 years - a nuclear power plant operates at 90% of its capacity for about twice as long. If you divide the amount of upfront investment by the number of kilowatt-hours output over the entire life of the plant, the FNPP is cheaper than alternatives.
Overall costs of the “Akademik Lomonosov” FNPP have not been disclosed as the project is yet to be completed. It is a pilot project, so-called First of a Kind (FOAK), and as such (as with any pilot project in any industry) it will be more expensive and take longer to build than subsequent serial projects will. This rule is not just applicable to the nuclear industry but was also true of the first solar panels ever constructed. Cost reduction comes with the economies of scale and the learning curve.
According to the IAEA, small modular reactors (SMRs) have an installed electrical power of up to 300 MW per module. RITM series reactors generate more than 55 MW of electrical power. These reactors are equipped with advanced engineering and technical means and could be used as part of single-module or multi-module power plants.
RITM-based NPPs will be offered in both onshore and offshore design.
The first onshore NPP with RITM-200 reactors will be commissioned in Russia by 2028.
In December 2020, Rosatom and the government of a Russian region of Yakutia entered into an agreement on the principles of tariff setting for electricity within the framework of the project for the construction of a nuclear power plant in the Ust-Kuyga village of the Ust-Yansky ulus.
In accordance with the agreement, the government of Yakutia will ensure the purchase of electricity from NPP in the amount of 40-50 MW, and will also assist in the provision of a land plot.
Replacement of obsolete coal and diesel energy sources with nuclear power will reduce CO 2 emissions in the area by 10,000 tons per year. The construction of the station will provide a stable and clean energy supply for the project for the development of the Kyuchus gold deposit. Up to 800 new jobs will be created during the construction of the NPP. Such projects serve as a reliable and clean source of heat and electricity for both natural resources extractors and residents of remote areas with an isolated power system.
Nevertheless, the RITM-200 reactors are not a first-of-a-kind technology. As many as six such reactors have already been installed on the icebreaker Arktika, Sibir and Ural. The RITM-series small modular reactors are based on an extensive experience in the development and operation of four generations of reactors for the icebreaker fleet, which is more than 400 reactor-years.
The safety systems of NPPs with RITM series reactors are based on Rosatom's experience in high-power reactors for onshore NPPs with VVER-type reactors and small reactors for the icebreaker fleet.
The safety of RITM-based NPPs is achieved through multi-level systems and shell barriers. Safety systems prevent accidents, and several levels of barriers embedded in the design of the station exclude the release of radioactive substances into atmosphere.
The combination of active, which require energy sources, and passive, operating without an energy source, safety systems allows for the highest level of plant safety. In addition, the principles of internal self-protection of the reactor are employed.
The selection of a site for the construction of a nuclear power plant of any capacity is a complex and strictly regulated process. The same standards are applied for both large and SMR NPPs.
According to the Russian rules and regulations, the construction of nuclear power plants is prohibited:
The area required for a 110-MW onshore NPP with two RITM-200 reactors in a single reactor building is 60,000 M 2 or 15 acres that is approximately equal to 8.5 football fields.
We assume that the construction period for both serial onshore and offshore NPPs will not exceed 48 months.
The design life of both onshore and offshore NPPs with two RITM-series reactors is 60 years with the possibility of extension.
Decommissioning of the stations will be carried out without damage to the environment, and the sites will be brought to a state of “green lawn.” All spent nuclear fuel will be sent to special containers for reprocessing.
NPPs with RITM series reactors run on UO 2 fuel with an enrichment degree of less than 20%. The fuel cycle for an onshore NPP is 6 years and for an offshore is up to 10 years.
Rosatom has already launched a pilot project for an onshore SMR RITM-based NPP in Russia.
The implementation of such a project will bring significant social and economic effects to the area: