How often are wooden transmission poles typically scheduled for inspection?

Wooden transmission poles are typically scheduled for inspection every 20 years, followed by inspections every 8 to 10 years thereafter. This approach is grounded in industry standards and practices that recognize the longevity of wooden infrastructure while also accounting for its susceptibility to environmental factors, decay, and insect damage.

Initial inspections after the initial 20-year period help identify any deterioration or issues that may have developed, ensuring that safety and reliability are maintained over time. The follow-up inspections every 8 to 10 years allow for timely maintenance and repairs, minimizing the risk of failure and extending the lifespan of the poles.

This cyclical inspection schedule reflects a balance between managing operational costs and ensuring the integrity of the power transmission system, which is critical for continuous service and safety. Other intervals mentioned, such as every 5, 10, or 15 years, do not align with standard industry practice, as they may either be too frequent or not sufficiently proactive in addressing the necessary maintenance of wooden poles.