The hazard
A fall from height can kill you or change your life for good, and it happens in a split second. Falls come from unsafe conditions, like an open edge or a loose cover, and from unsafe acts, like unhooking to reach one more spot. Protection only works if it is set up before the work starts and used every time.
The action
Anchorages for personal fall arrest must support at least 5,000 pounds per employee attached, or be designed, installed and used as part of a complete system with a safety factor of at least two, under the supervision of a qualified person (29 CFR 1926.502(d)(15)(i) and (ii)). Never tie off to a guardrail system (29 CFR 1926.502(d)(23)). If you are not sure an anchor is good, stop and ask before you clip in. (29 CFR 1926.502(d)(15))
ASK THE CREW
If someone fell and was hanging in a harness, who would do what in the first few minutes?
From the talk: Fall protection. Read it in full, free, with the questions and the sign-in sheet.