Koeberg Nuclear Power Station containment buildings damaged by prolonged exposure to sea air

Koeberg Nuclear Power Station containment buildings suffer damage, ESI Africa, Feb 12, 2021   A recently released Eskom document has revealed that 40 years of exposure to sea air at Koeberg Nuclear Power Station has damaged the concrete of the containment buildings, according to Koeberg Alert Alliance.

At one stage the concrete containment dome was found to have cracked around the entire 110-meter circumference, states the Koeberg Alert Alliance.

“The containment buildings are the outer shells of the reactor buildings, built as pressure vessels to withstand the pressure if the reactors inside them ever malfunction and therefore prevent harmful radiation being leaked into the environment,” says DR, a member of Koeberg Alert Alliance and a retired analytical chemist.

“Where the chloride salts have entered, they have caused corrosion of the reinforcing steel bars, resulting in spalling and delamination of the concrete – it is even more alarming than I thought,” he says. Spalling results from water entering concrete which forces the surface to peel, pop out, or flake off. ……..

According to the Koeberg Alert Alliance, the provided 31-page report which refers to repairs done up until 2018, has eleven pages entirely blacked out and various other sections, photos and tables redacted with the reason given as “sensitive technical information”.

“The interesting parts are clearly those that have been redacted,” says University of Johannesburg Physics Professor, Hartmut Winkler. “The first big redact is titled History/Background and presumably describes past failures and recent damage that Koeberg Alert Alliance’s PAIA was interrogating. Why should the ‘History’ be sensitive due to technical information when the less redacted sections are full of technical details.

“The most puzzling redact to me are the references which are supposed to be publicly available documents, so why are they all being hidden? Do they expose some entities that Eskom does not want anyone to know have been involved with Koeberg and why? I would also query why the financial information would be redacted. Surely the public has a right to know how much money certain components cost, and what Eskom paid for them?” says Winkler.

This is a developing story, ESI Africa will do a follow up to give Eskom an opportunity to respond to the claims. https://www.esi-africa.com/industry-sectors/generation/koeberg-nuclear-power-station-containment-buildings-suffer-damage/

February 13, 2021 - Posted by Christina Macpherson | incidents, South Africa