Overview
- Eskom recorded three airborne contamination detections inside Koeberg Unit 2 during scheduled maintenance on June 30, July 2 and July 7, all occurring inside controlled work areas.
- Eskom and plant engineers traced the events to steam‑generator inspections using Eddy Current Testing and to a temporary loss of power to ventilation that mobilised microscopic oxide particles known as 'crud'.
- The National Nuclear Regulator and Eskom reported no release of radioactive material off‑site, measured worker exposures as very low—below a dental X‑ray—and classified the occurrences as INES Level 0.
- Plant procedures triggered alarms, evacuated the work zone, restored filtration and ventilation, screened personnel, and officials said Unit 2's planned outage remains on schedule for return to service in November.
- Koeberg supplies a portion of South Africa's electricity and officials used the episode to reassure the public and confirm ongoing plans to extend the plant's life and pursue roughly 5–5.2 GW of additional nuclear capacity.