Late on Monday night, the power utility said it had experienced an apparent over-pressurisation in one of the station’s boilers.
“After a boiler tube leak alarm, the boiler tripped on a high-pressure alarm. On inspection, damage was observed in the boiler and surrounding equipment,” Eskom said.
The cause of the incident was under investigation.
“Eskom engineers have been on site (Monday) and have undertaken a preliminary assessment while the boiler cools down enough for a full assessment to be undertaken. The results of this assessment and the implications will be reported once available.”
Eskom said the incident would add more pressure to an already tight system, but that there was “no immediate risk of load shedding” as a result.
One person was treated for dust inhalation during the incident but no other injuries were reported, the power utility said.
On the flip side of the coin, Koeberg power station’s unit two in the Western Cape ran for a record 484 days before it was shut down for its 20th refuelling outage on March 24.
Yesterday, the utility said this bettered unit one’s record of 454 days of uninterrupted operation between June 2000 and September 2001. “This is also the first time in Koeberg’s history that one of the units completed an uninterrupted run from one refuelling outage to the next.
“This reflects the exceptional planning and execution of responsibilities by Koeberg employees and should serve as inspiration to continue on the path of world-class performance going forward,” Eskom said.
Koeberg’s units hold third and fourth places in Eskom’s record books for continuous operation, following the Matla and Majuba power stations’ records of 598 and 528 days of uninterrupted operations respectively.
Eskom’s Monday system status update, which is part of its “commitment to regular and transparent communication on the power system” was again late this week – unavailable as of yesterday morning.