Project Overview
Client: BUROTEC / Electricité Du Liban (EDL)
Location: Jieh Power Plant, South Lebanon
Project Type: Rehabilitation of Jieh Boilers (Units III, IV & V)
Year of Execution: 2017
Scope: Pressure Parts Replacement, Air Preheaters & Combustion System
Project Description
In 2017, ISPC undertook one of the most extensive maintenance campaigns in the history of the Jieh Power Plant. The project involved the simultaneous Rehabilitation of Jieh Boilers (Units III, IV, and V) to restore their rated steam generation capacity. This massive undertaking was critical to stabilizing the electrical grid in South Lebanon, requiring the mobilization of hundreds of skilled technicians and welders.
Scope of Rehabilitation of Jieh Boilers
1. Pressure Parts & Tubing:
Major Overhaul: Replacement of extensive sections of water wall tubes, superheater coils, and reheaters across all three units.
Header Repair: Inspection and repair of steam headers and drum internals to ensure structural integrity under high pressure.
2. Air & Gas Path Upgrade:
Air Preheaters: Rehabilitation of the rotary air preheaters (Ljungström type) to improve thermal efficiency by recovering waste heat from flue gases.
Ductwork & Expansion Joints: Repairing corroded flue gas ducts and replacing damaged fabric expansion joints to prevent air leakage.
3. Combustion System:
Burner Refurbishment: Complete dismantling, cleaning, and calibration of the heavy fuel oil burners to optimize combustion and reduce emissions.
Draft Fans: Maintenance of Forced Draft (FD) and Induced Draft (ID) fans, including bearing replacement and dynamic balancing.
Key Challenges & Solutions
Challenge: Managing simultaneous rehabilitation works on three major units required precise coordination to avoid logistical bottlenecks and safety hazards.
Solution: ISPC implemented a zone-based project management strategy, dedicating specific teams and supervisors to each boiler unit while sharing central heavy lifting resources.
Results
The Rehabilitation of Jieh Boilers was a resounding success. Units III, IV, and V were brought back online with restored efficiency, significantly reducing forced outages and contributing to a more stable power supply for the region.
