Shortly after midnight on 28 October 2021 some test results became available which found excessive levels of Iodine-131 in the ventilation system at the Koeberg nuclear power station. This was likely a result of a test which had been done in the afternoon, combined with faulty filtration systems that meant the Koeberg Security Central Alarm Station (CAS) had to be evacuated.
While it is reassuring that Eskom were testing this safety system, no standard test procedure includes evacuating all staff from the security nerve centre of a nuclear plant. Clearly there was something significantly wrong.
While Eskom has not released much by way of detail, it is likely to be a result of a combination of three factors.
On the show Rossouw said that “Eskom is regulated by an International Nuclear Agency”, which is incorrect. The IAEA can only make recommendations to a member country, and member countries are free to implement, or ignore, those recommendations. For example, in 2013 the IAEA made several recommendations concerning South Africa, and while some of these have been implemented, others have simply been ignored for the past eight years.
Consequently, Eskom does not require a ‘permit’ from the IAEA to operate Koeberg, as Rossouw stated on the show. He said “the real risk is that the Agency will recall their permit, in which case they will have to shutdown”.
The National Energy Regulator of South Africa (NERSA) has given a conditional concurrence with the section 34 ministerial determination to proceed with procuring a new nuclear plant. This concurrence has some crucial suspensive conditions, in particular 1.3. This makes it clear that given the information put before NERSA, the decision to go ahead with a nuclear build cannot be considered rational.
Eskom issued a statement on 4 June confirming the suspension of Koeberg’s General Manager for performance-related issues (see below for full text). This is concerning as it raises several questions from a safety perspective.
One man, two jobs Firstly Eskom’s chief nuclear officer, Riedewaan Bakardien (shown here), is now also doing the job of Koeberg plant manager, which means he can’t be giving 100% of his attention to either job. What aspect of these jobs is going to be neglected during this time?