The challenge
An electrostatic precipitator (ESP) keeps a cement plant within its dust emission limits. Thermal cycling, abrasive dust and corrosive gases had caused electrode misalignment, worn components and corroded casing plates.
All work had to be done inside the ESP chambers, a hazardous confined space, within a fixed shutdown window.
Scope of works
- Confined space entry with permits, continuous gas monitoring, ventilation and standby rescue
- Inspection, straightening and tensioning of discharge electrodes and collecting plates
- Removal of corroded lining plates and structural welding of new plates
- Electrical testing, alignment checks and pre-start audit
Outcome
The ESP was returned to full collection efficiency, keeping the plant compliant with emission limits. See the ESP internal structural repair we carried out at another plant, and our industrial civil and structural works.
Photo record
