AEP was one of the early adopters of arc rated basic clothing. Most utilities used cotton until 1994. Then all were required to use 100% natural fiber or arc rated clothing. Contrary to popular belief, not all clothing catches fire in an arc flash or a flash fire. This is why the move was so hard for larger companies. Sometimes they lucked out. BUT when you have clothing that will not ignite you eliminate the risk AND reduce the injury probabality and extent dramatically.
Clothing ignitions lead to fatality about 50% of the time and they almost always lower quality of life.
We applaud AEP and most other utilities for using arc rated clothing.