8.3-run-until-2035-4-76f7defbd1e7be07.pdf

This report details the technical requirements and recommended interventions for the life extension of the Hendrina Power Station to 2035. It focuses on the refurbishment and replacement of critical electrical infrastructure—including transformers, motors, cables, and generators—and identifies necessary maintenance for common plant areas and boiler systems to ensure operational reliability.

• To ensure the reliability of new auxiliary transformers until 2035, the report recommends maintenance assessments every five years until 2025, increasing to every three years thereafter to detect ageing trends early.
• Original auxiliary transformers are in an unsatisfactory state and require immediate in situ refurbishment to operate until 2025; however, approximately 20% of these units are expected to be beyond refurbishment and will require replacement to reach 2035.
• The station's metering systems currently fail to comply with Eskom EMDAS requirements regarding accuracy, independency, and method. All components must be replaced by 2015 for life extension to 2025, with a second replacement required by 2027 to extend operation to 2035.
• LV and MV motors are largely past their economic and reliable life, with some over 40 years old. The report recommends an immediate high-priority replacement of unit-plant related LV motors and a comprehensive replacement program for MV motors to support operation until 2035.
• Operation until 2035 using existing PILCSWA cables is deemed unfeasible due to expected intolerable failure rates between 2020 and 2035. Complete replacement of all original PILCSWA cables is recommended.
• Siemens presented three scenarios for generators to reach 2035: Scenario A (keeping current generators) is not recommended due to high risk of major failures; Scenario B involves replacing units 8, 9, and 10 with air-cooled generators and keeping three strategic spares; Scenario C involves replacing all ten generators with air-cooled units for maximum security and lowest maintenance costs.
• For the boiler plant (Units 1-5), a tower boiler conversion is suggested for the 2035 option to reduce erosion rates, decrease air leakage, and eliminate fireside corrosion issues resulting from furnace wall replacement.

APA

Centre for Environmental Rights (n.d.). 8.3-run-until-2035-4-76f7defbd1e7be07.pdf. https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-4.pdf?x21779

Chicago

Centre for Environmental Rights. 8.3-run-until-2035-4-76f7defbd1e7be07.pdf. n.d. https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-4.pdf?x21779.

Wikipedia

{{cite report |author=Centre for Environmental Rights |title=8.3-run-until-2035-4-76f7defbd1e7be07.pdf |url=https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-4.pdf?x21779 |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{centreforenvironmentalrightsnd83rununtil2035476f7defbd1e7be07pdf, author = {{Centre for Environmental Rights}}, title = {{8.3-run-until-2035-4-76f7defbd1e7be07.pdf}}, institution = {Centre for Environmental Rights}, url = {https://cer.org.za/wp-content/uploads/2017/07/8.3-Run-Until-2035-4.pdf?x21779}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }