Is the double figure 8 knot acceptable to used with occupational fall protection equipment?

NO, as far as Clockwork Safety & Equipment Training research has shown, no WorkSafeBC regulation or CSA standard gives any mention to this knot. It is our assumption that this consensus came from the rock climbing protocols which do NOT parallel into occupational fall protection. Let it be known that the only knots mentioned for legal use at the workplace are the positive stop (termination) knot near the bottom of a vertical lifeline and prusik (rope grab) knot.