OPGW installation safety

Customer

AEP

Location

Oklahoma

Highlights

  • OPGW Installed Without Torsional Strain or Fiber Damage
  • Anti-Rotation Device Prevented Cable Twist During Pulling Process
  • Completed On Time and Aligned with High-Voltage Safety Standards

Anti-Rotation Device Ensures Safe OPGW Installation on High-Voltage Transmission Line 

The Challenge

American Electric Power (AEP) undertook a critical high-voltage transmission project that involved the installation of Optical Ground Wire (OPGW) to improve grid reliability and communications. OPGW installation presents unique challenges, especially the risk of cable twist during the pulling process. Such twisting can damage the internal fiber optic strands and compromise both safety and system performance, given the cable’s dual role in grounding and communication.  Maintaining the structural and optical integrity of the cable throughout the pulling process was essential to ensuring both safety and functional reliability. 

Root Cause Analysis 

  • Rotational Stress: Pulling tension can cause the OPGW to rotate, leading to fiber damage. 
  • Installation Sensitivity: OPGW’s dual role as both conductor and communication medium means any damage during installation can have system-wide effects. 
  • Line Complexity: Long spans and tension variances increase the risk of torsional strain during overhead installations. 

The Solution

Deployment of Anti-Rotation Device 

To prevent cable twist during installation, the contractor deployed a specialized anti-rotation device. This equipment ensured the OPGW was pulled evenly and smoothly, eliminating rotational stress that could damage the fibers. 

Proactive Construction Oversight 

Think Power Solutions provided field oversight to verify proper setup, safety protocols, and equipment use throughout the operation. Oversight included real-time observation of the pulling process and confirmation of line tension stability. 

Experience-Based Execution 

The contractor’s familiarity with similar high-voltage installations, combined with early preparation, allowed the team to anticipate challenges and maintain a controlled work environment. 

Key Benefits

  • Fiber Integrity Preserved: No reported damage to the internal fibers of the OPGW. 
  • On-Time Milestone Completion: Project proceeded without incident or installation delays. 
  • Safety Assurance: Field teams maintained full safety compliance for both personnel and equipment. 
  • Technology-Led Risk Mitigation: The anti-rotation device proved to be a simple yet critical tool for high-voltage OPGW installation. 

The Results

The 345 kV transmission line was successfully energized in July 2025. The OPGW installation was completed without incident, and the cable remained structurally intact throughout. The solution met all of AEP’s performance, safety, and scheduling objectives. With no need for rework or post-installation corrections, the project demonstrated how targeted equipment and experienced oversight can de-risk complex transmission builds. 

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