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Zaporizhzhia Nuclear Power Plant crisis

Coordinates: 47°30′30″N 34°35′04″E / 47.5083°N 34.5844°E / 47.5083; 34.5844
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IAEA mission observing shell damage to a building housing solid radioactive waste and fresh nuclear fuel in September 2022

During the Russian invasion of Ukraine, the Zaporizhzhia Nuclear Power Plant has become the center of an ongoing nuclear safety crisis, described by Ukraine as an act of nuclear terrorism by Russia.[1]

The plant, which is the largest of its kind in Europe, has seen destruction of its infrastructure via shelling, damage to its power lines, amounting to what Ukrainian authorities call the largest situation of its kind in history. A potential disaster may exceed the scale of previous disasters at nuclear power plants.[2][3]

According to a report by the International Atomic Energy Agency (IAEA), "The situation in Ukraine is unprecedented. It is the first time a military conflict has occurred amid the facilities of a large, established nuclear power program."[4] Nuclear safety expert Attila Aszódi said that an event similar in type and scale to the Chernobyl disaster is technically and physically not possible in the Zaporizhzhia plant, while calling for urgent steps to ensure the safety of the plant.[5] The Bellona Foundation called the crisis "something the world nuclear energy community never thought it would see — and thus never prepared for."[6]

Timeline

2022

The plant has been occupied by Russian forces since 3 March 2022. On 5 July 2022, The Wall Street Journal reported that Russian forces arranged a military base in the complex by deploying heavy self-propelled multiple rocket launcher BM-30 Smerch.[7] On 19–20 July, three Ukrainian suicide drones attacked Russian "Grad" launcher and military tents at the site. Ukraine's Ministry of Defense said that three Russian occupiers were killed and twelve injured.[8] The occupation administration was reported as saying that at least eleven employees were injured. An occupation official said the reactors were not damaged and it was unlikely they were the target.[9]

Reactor 2 during the September IAEA inspection

On 3 August 2022, Rafael Grossi, head of the IAEA, expressed grave concerns about the physical integrity of the plant, whether all necessary repairs and maintenance were being done, and the security of nuclear material.[10] A mission to inspect the plant was being planned by the IAEA, waiting on approval by Ukrainian and Russian sides, as well as United Nations authorisation. Energoatom opposed an IAEA visit because "any visit would legitimise Russia's presence there". Occupation official Yevhen Balytskyi invited IAEA to visit to show how the Russians were guarding the facility while Ukrainians were attacking it.[11] On 5 August the 750 kV electrical switchboard at the plant was shelled, causing three transformers to shutdown and one of the three operating reactors to be disconnected from the grid, and triggering its emergency protection system.[12][13]

On 8 August, damage was reported at the plant. Ukrainian authorities said that Russian shelling had damaged three radiation sensors and left a worker hospitalised; Ukrainian President Volodymyr Zelenskyy accused Russia of waging "nuclear terror". Local Russian-backed authorities said that Ukrainian forces had hit the site with a multiple rocket launcher, damaging administrative buildings and an area near a nuclear storage facility. UN secretary general Guterres said "any attack to a nuclear plant is a suicidal thing", calling for IAEA inspectors to be given access.[14] Energoatom called for a demilitarised zone around the plant with international peacekeepers deployed.[15]

On 9 August, the head of Energoatom said that Russia planned to disconnect the station from the Ukrainian grid and connect it to the Russian grid.[16]

On 11 August, Russia called a meeting of the United Nations Security Council to discuss the situation at the plant. The Russian delegation stated that Ukrainian forces had on 5 August used heavy artillery to shell the plant, and on 6 August attacked with cluster munitions; they supported a visit by the IAEA. The Ukrainian delegation stated that Russia had "staged shelling of the nuclear power plant", that Russia used the plant to shell Ukrainian towns, and they also supported a visit by the IAEA traveling through Ukrainian controlled territory. The United Arab Emirates delegation reiterated that Article 56 of the Geneva Conventions Protocol I outlawed attacks on nuclear electrical-generating stations. Grossi said the situation was "very alarming" but there was no immediate threat to nuclear safety, though the situation could change.[17][18]

Also on 11 August, the plant was shelled several times, including near where radioactive materials were stored. Ukraine said that Russia did the shelling, while Russian officials said that Ukraine did it.[19][20] On 14 August, Zelenskyy accused Russia of stationing troops at the plant to fire at the cities of Nikopol and Marhanets across Kakhovka Reservoir.[21] In the second half of August a video emerged that showed Russian military trucks and armored vehicles parked in buildings that housed generating turbines, later confirmed in the IAEA inspection.[22][13]

IAEA expert mission leaving Vienna on 29 August 2022. Director-General Rafael Grossi at front; Head of the Department of Nuclear Safety and Security Lydie Evrard in long sleeves; Head of the Department of Safeguards Massimo Aparo with white shoelaces.

On 19 August, Russia agreed to allow IAEA inspectors access to the Zaporizhzhia plant from Ukrainian-held territory, after a phone call between the President of France, Emmanuel Macron, and Russian president, Vladimir Putin. A temporary ceasefire around the plant still needed to be agreed for the inspection.[23][24] Russia reported that 12 attacks with over 50 artillery shells explosions had been recorded at the plant and the staff town of Enerhodar, by 18 August.[25]

Also on 19 August, Tobias Ellwood, chair of the UK's Defence Select Committee, said that any deliberate damage to the Zaporizhzhia nuclear plant that could cause radiation leaks would be a "breach" of Article 5 of the North Atlantic Treaty, according to which an attack on a member state of NATO is considered an attack on all of them. The next day, United States congressman Adam Kinzinger said that any radiation leak would kill people in NATO countries, which would be an automatic activation of Article 5.[26][27]

Shelling hit coal ash dumps at the neighbouring coal-fired power station on 23 August, and ash was on fire by 25 August. The 750-kV transmission line to the Dniprovska substation, which was the only one of the four 750-kV transmission lines that had not yet been damaged and cut by military action, passes over the ash dumps. At 12:12pm on 25 August the line cut off due to the fire below, disconnecting the plant and its two operating reactors from the national grid for the first time since it started operating in 1985. In response, reactor 5's back-up generators and coolant pumps started up, and reactor 6 reduced generation. Incoming power was still available via the 330-kV line to the substation at the coal-fired station, so the diesel generators were not essential for cooling reactor cores and spent fuel pools. The 750-kV line and reactor 6 resumed operation at 12:29pm, but the line was cut by fire again two hours later. The line, but not the reactors, resumed operation again later that day.[28] On 26 August, one reactor restarted in the afternoon and another in the evening, resuming electricity supplies to the grid.[29] The reactors and spent fuel pools depend on water from the Kakhovka Reservoir for cooling. The reservoir is created by the Kakhovka Hydroelectric Power Plant dam, which is a main conflict location of the two war participants.[30][31]

IAEA inspection

Grossi, Evrard and IAEA mission team members at the plant on 1 September 2022

On 29 August, an IAEA expert mission led by Rafael Grossi left Vienna.[32] On 1 September 2022, the IAEA team passed through the frontline in armoured white land cruisers, where they were held at the first checkpoint outside Zaporizhzhia because of shelling reports.[33][34] In the previous few days the staff town of Enerhodar had been under intense shelling. Grossi said he was aware of "increased military activity in the area" but would press ahead with the visit. Russia accused Ukraine of trying to seize the plant that morning with 60 troops crossing the Dnieper river at 6 am local time. Energoatom said Russian shelling of the plant had forced the shutdown of one of the two operating reactors. The IAEA team arrived at 1 pm and commenced the inspection.[34][35][36] Grossi said that the "plant and physical integrity of the plant" had been "violated several times" and that IAEA inspectors would remain at the site.[37][35]

IAEA Director-General Grossi's press conference on 2 September 2022

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