As a retired Safety Officer on one of those " Incident Management Teams" ,the folks who manage those pesky large wildland fires out here in the western US, you have asked a question that may take awhile to answer.
As suggested above, look at those posts and also use some common sence. For if something doesn't feel or look right, it usually means there is a problem.
Here's the most important one! Protect your eyes!
The next 547 safety guidelines I leave up to you to find, research and implimemt.