8.3-run-until-2035-8-c5b2ea9e67874b1f.pdf

This report section provides an economic and technical evaluation of life-extension options for the Hendrina Power Station to enable operation until 2035. It details necessary investments in boiler components, turbine plants, electrical systems, and control systems, comparing the costs of refurbishment and replacement against the risks of failure and lost revenue.

• Modular replacement of economisers and superheaters for Units 1-5 has a payback period of less than five years based solely on avoiding boiler tube leaks (BTL), while the same replacement for Units 6-10 economisers has a payback period of less than 10 years.
• A tower boiler upgrade for Units 2-5 is recommended for operation until 2035 because it reduces erosion rates, significantly reduces air leakage, and eliminates fireside corrosion problems due to the replacement of the furnace wall.
• Investment in a new turbine design is highly cost-effective, with more than two-thirds of the investment costs paid back within approximately one year through maintenance savings and efficiency gains.
• The station faces a significant financial risk regarding the environmental (CO2) levy of 3.5c/kWh imposed by SARS if measurement and metering standards imposed by NERSA are not met, as the levy could be based on nominal rated capacity rather than actual energy generated.
• The Medium Voltage (MV) motor fleet is beyond its 20-year economical design life, resulting in over 50 significant incidents per year and production losses exceeding 46,000 MWh annually due to unplanned outages.
• For generator life extension to 2035, Scenario C—investing 1,044,000,000 ZAR in 10 new Air Cooled Generators—is the most cost-effective long-term option because it heavily decreases future maintenance costs to approximately 220,040,000 ZAR.
• Failure of the main steam piping (HP piping) is identified as a critical life threat because the release of energy can replace all vicinity air with steam, making fatalities very likely.

APA

Centre for Environmental Rights (n.d.). 8.3-run-until-2035-8-c5b2ea9e67874b1f.pdf. https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-8.pdf?x21779

Chicago

Centre for Environmental Rights. 8.3-run-until-2035-8-c5b2ea9e67874b1f.pdf. n.d. https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-8.pdf?x21779.

Wikipedia

{{cite report |author=Centre for Environmental Rights |title=8.3-run-until-2035-8-c5b2ea9e67874b1f.pdf |url=https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-8.pdf?x21779 |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{centreforenvironmentalrightsnd83rununtil20358c5b2ea9e67874b1fpdf, author = {{Centre for Environmental Rights}}, title = {{8.3-run-until-2035-8-c5b2ea9e67874b1f.pdf}}, institution = {Centre for Environmental Rights}, url = {https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-8.pdf?x21779}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }