IEEE 516-Guide for Maintenance Methods on Energized Power Lines was approved on May 13, 2009 and is now available for purchase. The new standard includes updates on Minimum Approach Distances (MAD) and other safe recommendations when working on energized lines. The updated standard introduces new MAD terms to include Minimum Air Insulation (MAID), Minimum Tool Insulation Distance (MTID), Minimum Approach Distance for Tools (MAD for Tools) and Minimum Helicopter Approach Distance (MHAD). MAD tables have been updated to include all of the listed MAD values measured line-to-ground and line-to-line. These updated MAD values are different than presently required by OSHA and NESC and if used as a standard will change many utilities' work processes.