Principles for use of personal protective equipment for working at heights

For differentcustomers,ASAT comprehensively considers the work characteristics in different fields to provides the safety,reliability, practicality and efficiency of solutions.

Set fall arrest system anchor at a higher
position and attaching point used at a lower
position, to limit impact force experienced by
the user.

In the area with risks of fall, the fall arrest system shall be used to
arrest falling of user.
The fall arrest system is often required to be suspended at a high position and

used at a low position as far as possible, to reduce the fall factor of the system,

thereby limiting the impact force that acts on the falling user.
Fall factor = Distance of fall/working length of rope
The connector used in the fall arrest system shall be equipped
with the buffer that has the function of absorbing potential energy,
to ensure that the impact force acting on the user is less than 6
kN when a fall occurs.

Fall factor= distance of fall/
working length of rope

F: impact force
f: falling factor
K: Young`s Modulus
m: weight
g: graviational acceleration

Clearance/ Safety distance

During use of the fall arrest system, attention shall be paid
to leaving sufficient clearance distance, to prevent the user
from colliding with obstacles when a fall occurs and avoid
consequent secondary damage to the user.
Clearance = the length of lanyard+tearing langth of energy
absorber +the distance between the feet of the user and the
harness attachment point of the fall arrest system+safety
margin +the rope`s elasticity