Ultrahigh-voltage cables run along an underground cable tunnel at the Ever Power Power Plant. Therefore, the leakage repair work had to take care of construction impact on the cables and also be aware of the special safety issues in ultrahigh-voltage ducts. This project dealt with leakages including leaking construction joints, contraction joint leaks, and template screw hole leaks, honeycomb leakage and other causes. The main leakage repair method was polyurethane resin injection. The client for this job was ABB, so construction plans, work documents and on-site communication was in English.