Dr Philip Webber, SGR, warns that another nuclear power plant is at major risk as the war enters new territory - and this plant includes Chernobyl-type reactors.

Responsible Science blog, 22 August 2024
 

The Russia-Ukraine war has already led to extremely serious risks to nuclear power plants. In a previous article, [1] I described in some detail those related to the Zaporizhzhia (Zaporizhzhya) nuclear power plant (ZNPP) in Ukraine. The situation there has once again deteriorated – as I discuss below – but I want to focus first on the threat to another power station.
 

Kursk

Due to the Ukraine military incursion into the Kursk region of the Russian Federation, which began on 15 August, [2] there is now a severe risk to the huge Kursk nuclear power plant (KNPP) – which has elements in common with the Chernobyl (Chornobyl) plant. The KNPP is located some 60 kilometres from the border with Ukraine and is, at the time of writing, close to an area of fierce fighting. As a result, the International Atomic Energy Agency (IAEA) has issued further warnings to remind the warring parties to not risk a nuclear disaster in Europe. [3][4]

The KNPP – like the ZNPP – includes six nuclear reactors, and is also one of the three biggest nuclear power stations in Russia. But there are two critical differences. First, two of the KNPP reactors are operating at full power. Second, these two reactors are of the same design - the RBMK - as the Chernobyl nuclear plant, which suffered the world’s worst nuclear accident in 1986. Crucially, these reactors have no protective dome structure [5] making them very vulnerable to a military strike or aircraft impact. With intense fighting only a few tens of kilometres away, both reactors are well within the range of artillery or rocket fire. A military strike on either reactor could initiate a very serious release of radioactive material creating a Europe-wide nuclear disaster.

It is anticipated that the IAEA will soon visit the Kursk NPP to assess the situation on the ground.
 

Zaporizhzhia

Returning to the situation at the Zaporizhzhia NPP, IAEA inspectors stationed there have again reported intense military activity – artillery, rocket and heavy machine-gun fire – very close to the plant, and several instances of explosive drone strikes on the plant itself, as well as on vital electrical substations and surrounding woodland. [6] One of the two ZNPP cooling towers was hit, fires were started beside an electrical sub-station resulting in a loss of power, and the perimeter road was cratered.

The six ZNPP reactors are all in ‘cold shutdown’ but rely on a supply of electricity to power pumps for water cooling of the reactor cores – and a large number of spent fuel storage tanks – to prevent overheating to dangerous levels and a resultant release of radioactive material. The reliable supply of water remains a serious problem and emergency supplies of fuel for emergency diesel generators are also dangerously low.

Drone attacks also continue to be reported near Ukraine’s other nuclear power sites: the Khmelnytskyy, Rivne, and South Ukraine NPPs, as well as at the Chernobyl site. [7]

The IAEA Director General, Rafael Grossi, has issued a series of warnings reminding both Russia and Ukraine of UN agreements to avoid military activity at or near nuclear plants. [8] However, the only way to remove these risks completely is for a rapid, negotiated end to the war.
 

Dr Philip Webber is Co-chair of Scientists for Global Responsibility. He has written widely on the risks of nuclear weapons and nuclear power - including co-authoring the book, London After the Bomb. He spent part of his career working as an emergency planner in local government.
 

References