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What is the minimum force that a positioning system anchorage must be able to withstand?
✔Correct Answer-2 times the MAF(Maximum anticipated force) or 3,000 lbs
If a synthetic rope has a breaking strength of 6,600 lbs and a bowline knot is tied to make a lifting eye
what is the maximum gross load that can be lifted? ✔Correct Answer-660 lbs. Synthetic rope has a
safety factor of 10:1. That includes the weakening factor of the knot
Exposure to ionizing radiation dopes what to the human body? ✔Correct Answer-IR can change
cells and molecules in biological organisms
When is a trained signal person necessary ✔Correct Answer-When a crane can physically enter a
powerline restricted area.
What three ways can a capstan hoist be powered ✔Correct Answer-Electric Gas and Hydraulic
When using tape and butyl to weatherproof a ground kit what is a critical step in the process?
✔Correct Answer-Always cut the tape with sciccors
According to regulations, what is the maximum arresting force allowed to the human body?
✔Correct Answer-Maximum arresting force allowed on the body is 1800 lbs. But our y-landyards
reduce the force to half that
What is the minimum number of ground kits installed in a single run ✔Correct Answer-3. (1 at the
top above the hoisting grip. 1 at the base of the tower on the vertical run, 1 at the cabinet)
how often must a fire extinguisher be inspected by a qualified person? ✔Correct Answer-Annually
What is a crown block? ✔Correct Answer-Upper sheave assembly attached to the tower. Sheave
assembly = pulley or block
Exposure to Non IR does what to the human body ✔Correct Answer-Has thermal effects on the
body
An overhaul ball provides what function in the operations ✔Correct Answer-Provides weight so the
load line can travel back down to the ground. Its apart of the load
How many olbs of force is one kilo newton? ✔Correct Answer-225 lbs = 1 kn
5000 = 22.5 kn
When calculating a fall distance using a 6 foot energy absorber what is the maximum pull out
distance ✔Correct Answer-4' is the maximum a shock absorber can pull out for a 6' y landyard.
These limit force to 900 lbs or lower on the body and the body harness because they cannot take
more than 1800 lbs of force. 5' is the maximum a shock absorber for the special 12' y landyards these
limit for to les than 1350 lbs which is still less than 1800 lbs