T&D World Magazine

ANSI Standard Helps Utilities Manage Risk

The ANSI A300 (Part 9) Tree Risk Assessment standard calls for utilities to prioritize line segments based on importance and then perform risk assessment.

Tree failures are a significant cause of electric service interruptions, therefore, utilities dedicate significant resources for vegetation management. A reliable estimate of the percentage and total cost of interruptions caused specifically by trees is not available; however, a 2001 study by the Electric Power Research Institute estimated that power interruptions cost American business US$104 billion to $164 billion annually, and an additional $15 billion to $24 billion for all other powe

Register to view the full article

Registration on tdworld.com allows you exclusive access to high-value content such as Transmission & Distribution World supplements: Smart Grid, Renewables, Vegetation Management, Linemen, and Hurricane Sandy.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.