3M DBI SALA 7605060, Руководство пользователя

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3.0 INSTALLATION
3.1 PLANNING: Plan your Fall Protection system before starting your work. Account for all factors that may affect your
safety before, during, and after a fall. Consider all requirements and limitations defined in this manual.
;
Non-rigid anchorages which deform under load will affect System performance. Large deformations of the
anchorage may increase the required Fall Clearance below the HLL System, increasing the potential for serious injury or
death unless adequate clearance is provided.
3.2 SYSTEM ELEVATION: Both end anchorage points for the HLL System must be set at approximately the same elevation
level, such that the HLL System has a slope of five degrees (5°) or less.
Do not use the system if it exceeds this slope. The HLL System must be installed such that its height and setback from
the edge of the working platform will limit free fall to no greater than 6.0 ft. (1.8 m), when used in combination with
the connecting subsystem. Connecting subsystems will be either an Energy Absorbing Lanyard or Self-Retracting Device
(SRD).
It is recommended that the end anchorage points be placed above the user, such that the HLL System is positioned
overhead. If overhead positioning is not practical, the lifeline may be installed at lower elevations, but care must be taken
to ensure that the free fall limitations and anchorage height requirements of the connecting subsystems are met.
3.3 FALL CLEARANCE: There must be sufficient clearance below the user to arrest a fall before the user strikes the ground
or other obstruction. Fall Clearance is influenced by the following factors:
• Deceleration Distance • Worker Height • Elevation of Anchorage Connector
• Free Fall Distance • Movement of Harness Attachment Element • Connecting Subsystem Length
The specifics for how each of these factors affect Fall Clearance calculation is also determined by what type of connecting
subsystem is used. See the manufacturer instructions for your connecting subsystem for further information on Fall
Clearance factors.
When calculating HLL Fall Clearance, 3M Fall Protection defines two different application types based on the physical
set-up of the system. See Figure 6 for an illustration of the setback distance (X) and HLL height (Y). The application type
determines the correct Fall Clearance charts to use. The two application types are:
1. Application Type A - Small System Setback: This application type applies when the setback distance (X)
between the HLL System and the fall edge is 2 ft. (0.6 m) or less, OR the HLL height (Y) above the walking/working
surface is greater than or equal to the setback distance (X). When these conditions are true, use Fall Clearance
charts in Figures 7 and 8, and instructions for these charts in Section 3.4.
2. Application Type B - Large System Setback: This application type applies when the setback distance (X)
between the HLL System and the fall edge is greater than 2 ft. (0.6 m) AND the HLL height (Y) above the walking/
working surface is less than the setback distance (X). When these conditions are true, use Fall Clearance charts in
Figures 9 and instructions for these charts in Section 3.5.
A. ENERGY-ABSORBING LANYARDS: Lanyards should be selected for use with consideration of their length and the
resulting free fall distance from use. When the anchorage is located below the worker’s harness attachment point, free
fall distance will exceed the lanyard length, up to as much as twice the lanyard length.
B. SELF-RETRACTING DEVICES (SRDs): Any SRDs used with the HLL System must be approved for use with
deformable anchorage systems.
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All Fall Clearance values in these instructions were calculated using the maximum free fall distances stated in Section
3.2. Greater free fall distances will require more Fall Clearance.
;
When the connecting subsystem used with the HLL system is a non-3M product, 1 ft. (0.3 m) of additional Fall
Clearance must be added to the values in the Fall Clearance charts to account for unknown variation in product
performance.
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Connecting subsystems used with the HLL System must meet all local and regional requirements.
3.4 FALL CLEARANCE FOR APPLICATION TYPE A - SMALL SYSTEM SETBACK:
A. ENERGY-ABSORBING LANYARDS: For Energy-Absorbing Lanyards, Required Fall Clearance (C) is measured from
the anchorage and is determined by Lanyard Length (A), HLL System Span (B), and the number of users connected to the
HLL System. See Figure 7 for reference.
To determine Required Fall Clearance (C) using Figure 7 for Energy-Absorbing Lanyards:
1. Select the chart that has a capacity fitting your combined weight (including clothing, tools, etc.) and number
of users.
2. Find the column in the chart that matches your Lanyard Length (A).
3. Find the row in the column to the far left that matches your System Span (B).
4. Find the corresponding Required Fall Clearance (C) where the column for your Lanyard Length (A) and the
row for your System Span (B) intersect.