must make sure the rated capacity or the maximum intended load,
whichever is less, is not exceeded.
You must make sure the
suspension rope stays vertical between the boatswain's chair
suspension device unless all of these requirements are met:
(a) The rigging has been designed
by a qualified person;
(b) The scaffold can be easily
reached by rescuers;
The suspension rope is protected from damage when a change in
scaffold will not swing and contact another surface.
You must make sure a
suspension height of seventy-five feet above grade
setback is not exceeded.
EXEMPTION: Suspension height may be up
to one hundred thirty feet above grade or building setback if the
boatswain's chair block and tackle has all of the following:
1.An automatic braking
2.A design that
minimizes the amount of force required to raise or lower the
automatic braking system that automatically maintains an elevation
when no force is applied to the tackle;
4.A system that does not
must prohibit tying any kind of knot in a block and tackle system to
You must make sure another worker is stationed below any boatswain's
chair rigged with a block and tackle who can assist the suspended
(6) You must
make sure workers do not attempt to increase the work area by
swinging, swaying, or other maneuvers.