Calculating Fall Clearance Distance - Honeywell Miller MIGHTEVAC Instrucciones Para El Usuario

6.0 CALCULATING FALL CLEARANCE DISTANCE

It is essential to understand how to calculate the fall clearance distance for each work application
to avoid contact with a lower level. Use the following calculation to determine Required Fall Clear-
ance.
SELF-RETRACTING LIFELINE FALL CLEARANCE CALCULATION
[Calculation taken from work level]
Maximum Arrest Distance
+ (Non-Standing Work Position Factor)
+ (Swing Fall Factor)
+ 3 ft. (.9m) Safety Factor
= Required Fall Clearance
IMPORTANT NOTES:
The self-retracting lifeline must be anchored overhead to ensure the accuracy of the fall clearance
calculation and related information.
It is important to understand that other factors, such as whether the user is performing work in a
standing, crouched or lying down position and/or whether the user is working directly below the
anchor point or at an angle, can affect fall distance when using a retractable device.
The self-retracting lifeline fall clearance calculation assumes the user is standing. If the user will
be performing work in a crouched or kneeling position, an additional 3 ft. (.9m) of fall clearance is
required. If the user will be performing work in a lying down position, an additional 5 ft. (1.5m) of
fall clearance is required.
The self-retracting lifeline fall clearance calculation also assumes the user is working directly be-
low the anchor point, minimizing any possibility for a swing fall. In a swing fall situation, the total
fall distance will be greater than if the user were working directly below the anchor point. In some
applications, it may not be possible to work directly below the anchor point. In such a case, the
worker must increase the fall clearance distance to account for the swing fall factor. In any case,
the worker must not be exposed to a potential swing fall where contact with another object may
occur.
The maximum arrest distance (free fall + deceleration) varies by retractable. Always refer to the
labels on the specifi c unit to determine the maximum arrest distance.
CAUTION: Read all notes and refer
to all self-retracting lifeline fall
clearance diagrams and labels
to determine exact required fall
clearance for your application.
(See Fig. 8a, 8b, 8c & 8d.)
Fig. 8a
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