Chimney Stack Preventive Maintenance at Limay Power Plant

Case Study

Chimney Stack Preventive Maintenance During Limay Power Plant Shutdown

In early 2025, BEC was engaged to carry out preventive maintenance and repair work on the environmental compliance chimney (smokestack) at the Limay Power Plant. The work was scheduled during a planned shutdown, allowing for safe access to internal and elevated areas of the stack.

This structure, originally built by BEC, was still in excellent overall condition, requiring only minor repairs!  A testament to the quality of its original design and construction.

Project Challenges

Shutdowns are always challenging. Timely completion is critical to allow the plant to recommence operations without delay. This requires meticulous planning and early site preparation to ensure every stage, from access to restoration, is executed with precision.

Additional challenges included:

  • Working at heights up to 100 metres
  • Accessing confined internal platforms
  • Maintaining safety compliance throughout execution

BEC's approach

The BEC team implemented a complete maintenance strategy, addressing both structural and operational needs across multiple levels of the chimney. Activities included:

  • Concrete restoration and hairline crack sealing on internal and external surfaces
  • Protective insulation repair on MacAlloy bars
  • Surface recoating of deteriorated paint zones
  • Cleaning and reorganisation of cable trays and platform slabs

Every step of the stack preventive maintenance works was carefully coordinated within the shutdown timeline, ensuring maximum productivity and safety.

The BEC Advantage

By combining early planning, skilled execution, and a proactive maintenance approach, BEC delivered a high-impact project with minimal disruption. The stack preventive maintenance project was completed successfully and on schedule, with zero incidents and full client satisfaction. Key outcomes included:

  • Extended service life 
  • Improved environmental compliance
  • Enhanced operational safety 

This project reflects BEC’s capability to deliver complete engineering solutions that support asset longevity and operational excellence. Limay Power Plant can continue delivering reliable energy with renewed confidence in the condition and compliance of its critical infrastructure.

 

Need expert engineering solutions for your critical infrastructure? Contact BEC to discuss how we can support your next maintenance project, from planning to execution.

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Projects Details:
Owner

San Miguel Global Power

Client

San Miguel Global Power

Location

Philippines

Completed

April, 2025