Safety should be taken seriously by all fire performers. I have written up some minimal safety guidelines. This is mostly just common sense. Please take a look.
You should always have a spotter that you can trust standing by and ready every time you light up. This is obviously not the full extent of good safety practices for firedancers, but it has been an area of special interest for me: recruiting people to be spotters and training them to be good spotters has been an ongoing project for me. I am posting my spotter workshop notes and lesson plan, and encourage you to hold your own workshops.