3M EZ-Line Instruction Manual

OSHA 1910.140 OSHA 1926.502

Figure 1 - Product Overview

EZ-LINE

Horizontal Lifeline System

USER INSTRUCTIONS

5902346 REv. H

7605060

SAFETY INFORMATION

ENENENEN

Please read, understand, and follow all safety information contained in these instructions, prior to the use of this product. FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OR DEATH.

These instructions must be provided to the user of the equipment. Retain these instructions for future reference.

Intended Use:

This product is used as part of a complete Fall Protection system. Use in any other application including, but not limited to, material handling, recreational or sports-related activities, or other activities not described in these

instructions, is not approved by 3M and could result in serious injury or death. This product is only to be used by trained users in workplace applications.

! WARNING

This product is used as part of a complete Fall Protection system. All users must be fully trained in the safe installation and operation of their complete Fall Protection system. Misuse of this product could result in serious injury or death. For proper selection, operation, installation, maintenance, and service, refer to all instruction manuals and manufacturer recommendations. For more information, see your supervisor or contact 3M Technical Services.

To reduce the risks associated with using a Horizontal System which, if not avoided, could result in serious injury or death:

- Inspect the product before each use and after any fall event, in accordance with the procedures specied in these instructions.

- If inspection reveals an unsafe or defective condition, remove the product from service immediately and clearly tag it “DO NOT USE”. Destroy or repair the product as required by these instructions.

- Any product that has been subject to fall arrest or impact force must be immediately removed from service. Destroy or repair the product as required by these instructions.

- Ensure that Fall Protection systems assembled from components made by dierent manufacturers are compatible and meet all applicable Fall

Protection regulations, standards, or requirements. Always consult a Competent or Qualied Person before using these systems.

- The product must only be installed as described in its instruction manuals. Installations and use outside the scope of these instruction manuals must be approved in writing by 3M.

- Before installing, ensure that the installation methods and the product will not interfere with electric lines, gas lines, or other critical materials or systems.

- Ensure the product is congured and installed properly for safe operation as described in these instructions.

- Do not exceed the number of allowable users specied in these instructions.

- Do not twist, tie, knot, or allow slack in the lifeline.

- Do not connect to the system while it is being transported or installed.

- Use caution when installing, using, or moving the product as moving parts may create pinch points.

- The Metal Energy Absorber must be mounted so it can pivot and move freely. Secure the Metal Energy Absorber to the structure or stanchion as

specied in these instructions.

- Always maintain control of the crank handle when adding or removing tension from the system.

- Ensure the crank handle is in the resting position while the system is in use.

• To reduce the risks associated with working at height which, if not avoided, could result in serious injury or death:

- Your health and physical condition must allow you to safely work at height and to withstand all forces associated with a fall arrest event. Consult your doctor if you have questions regarding your ability to use this equipment.

- Never exceed allowable capacity of your Fall Protection equipment.

- Never exceed the maximum free fall distance specied for your Fall Protection equipment.

- Do not use any Fall Protection equipment that fails inspection, or if you have concerns about the use or suitability of the equipment. Contact 3M Technical Services with any questions.

- Some subsystem and component combinations may interfere with the operation of this equipment. Only use compatible connections. Contact 3M Technical Services before using this equipment in combination with components or subsystems other than those described in these instructions.

- Use extra precautions when working around moving machinery, electrical hazards, extreme temperatures, chemical hazards, explosive or toxic gases, sharp edges, abrasive surfaces, or below overhead materials that could fall onto you or your Fall Protection equipment.

- Ensure use of your product is rated for the hazards present in your work environment.

- Ensure there is sucient fall clearance when working at height.

- Never modify or alter your Fall Protection equipment. Only 3M, or persons authorized in writing by 3M, may make repairs to 3M equipment.

- Before using Fall Protection equipment, ensure a written rescue plan is in place to provide prompt rescue if a fall incident occurs.

- If a fall incident occurs, immediately seek medical attention for the fallen worker.

- Only use a full body harness for Fall Arrest applications. Do not use a body belt.

- Minimize swing falls by working as directly below the anchorage point as possible.

- A secondary Fall Protection system must be used when training with this product. Trainees must not be exposed to an unintended fall hazard.

- Always wear appropriate Personal Protective Equipment when installing, using, or inspecting the product.

- Never work below a suspended load or worker.

- Always maintain 100% tie-o.

FORM NO: SIT 5908279 REV: B

Always ensure you are using the latest revision of your 3M instruction manual. Visit the 3M website or contact 3M

;

Technical Services for updated instruction manuals.

If you have any questions about the product or this instruction manual, please contact 3M Technical Services. The contact

;

information for 3M Fall Protection is provided on the back cover of this instruction manual.

PRODUCT OVERVIEW:

Figure 1 illustrates the 3M™ DBI-SALA® EZ-Line™ Horizontal Lifeline (HLL) system. The HLL System is secured between two anchorage points and provides connections for up to two users as part of a Fall Arrest or Restraint system.

Figure 2 illustrates components of the EZ-Line Horizontal Lifeline. The Lifeline (A) extends from the Housing (B) and serves as the body of the EZ-Line Horizontal Lifeline. Carabiners (D) on either end of the device secure the Horizontal Lifeline between two anchorage connection points. The Output Shafts (E) serve as separate locations for the Crank Handle (C) to be inserted, which controls extension, retraction, and tensioning of the Lifeline.

After the system is installed, the Attachment O-Rings (G) serve as anchorage connection points through which the user may connect to the system. The Attachment O-Rings enable the user to work along the length of the Horizontal Lifeline. The Impact Indicator (F) enables the user to verify that the system has not experienced a fall arrest (or other force of equivalent or greater strength) during use. If the Impact Indicator is activated, then the user should remove the system from service immediately.

See Table 1 for more information on Component Specications.

Figure 2 - Components

Prior to installation and use of this equipment, record the product identication information from the ID label in the

;

Inspection and Maintenance Log (Table 2) at the back of this manual.

Table 1 – Product Specications

System Specications:

Capacity: Two persons maximum per span, with a combined weight (including clothing, tools, etc.) of

no more than 310 lb. (140 kg) per person. A maximum of six users may be attached to the system.

Some system applications may require the user to reduce the number of users per span.

;

All capacity requirements for your system application must be observed.

Anchorage: The anchorage structure to which the HLL System is secured must be rigid. The use of

Span Length: Single-span system: 0 - 60 ft. (0 - 18.29 m)

Standards: Designed and tested to conform to the requirements of OSHA 29 CFR 1910.140 and 1926.502.

Connecting Subsystems:

deformable anchors may require additional fall clearance.

See Figure 15 for reference. The structure to which the HLL System is secured must be capable of withstanding the following forces along the indicated axes:

Figure 15

Reference

Multi-span system: 0 - 60 ft. (0 - 18.29 m) with a Rolled Metal Energy Absorber installed on the end of the system opposite the housing.

Number of Users Maximum Arresting Force Maximum Free Fall

1 or 2 persons 1,350 lbf (6 kN) 6.0 ft. (1.83 m)

1 person 1,800 lbf (8 kN) 12.0 ft. (3.66 m)

Use of HLL systems should always comply with applicable regulations and should always keep free fall to a minimum. All connecting subsystems must meet all applicable local and regional requirements.

It is recommended that the weight of connecting subsystems secured to the system not

;

exceed 30 lb. (13.6 kg) cumulative per span. When connecting subsystems weighing more than 30 lb. (13.6 kg) cumulative are suspended on the system and actively manipulated with the system, it can cause unintentional deployment of the system’s impact indicators.

Description

Along axis of HLL 5,000 lbf (22.2 kN) 3,600 lbf (16 kN)

Perpendicular to axis of HLL 3,600 lbf (16 kN) 3,600 lbf (16 kN)

Anchorage Requirements

End Anchors Intermediate Anchors

Operating Temperature: -58°F to 140°F (-50°C to 60°C)

Component Specications:

Figure 2

Reference Description Material

Lifeline

Housing Low-density polyethylene

Crank Handle Steel, aluminum, plastic

Carabiner

1/4-in. wire rope, 7x19 galvanized steel

Zinc-plated high tensile alloy steel

Figure 2

Reference Description Material

Output Shafts Steel

Impact Indicator Zinc-plated steel

Attachment O-rings

Performance Specications:

Energy Absorber: Peak Dynamic Pullout Load: 2,500 lbf (11.1 kN)

Minimum Breaking Strength: 5,000 lbf (22.2 kN) for the HLL System

Average Dynamic Pullout Load: 2,000 lbf (8.9 kN) Maximum Pullout (Cable Length): 4 ft. 6 in. + 60 ft. (1.4 m + 18.3 m) Minimum Tensile Strength: 5,000 lbf (22.2 kN)

Zinc-plated steel

1.0 PRODUCT APPLICATION

1.1 PURPOSE: Horizontal Lifeline (HLL) Anchorage Systems provide multiple anchorage connection points for Fall Arrest and

Restraint systems along the entire length of the lifeline. They use a exible anchor line installed between two anchorage connectors, and are equipped with one or more energy absorbers to limit forces on the system and absorb energy in a fall

arrest.

1.2 STANDARDS: Your product conforms to the national or regional standards identied on the front cover of these

instructions. If this product is resold outside the original country of destination, the re-seller must provide these

instructions in the language of the country in which the product will be used.

1.3 SUPERVISION: Horizontal Lifeline systems must be installed and used under the supervision of a Qualied Person.

1.4 TRAINING: This product must be installed and used by persons trained in its correct application. These instructions are to be used

as part of an employee training program as required by national, regional, or local standards. It is the responsibility of the users and installers of this equipment to ensure they are familiar with these instructions, trained in the correct care and use of this equipment, and are aware of the operating characteristics, application limitations, and consequences of improper use of this equipment.

1.5 RESCUE PLAN: When using this equipment and connecting subsystems, the employer must have a written rescue plan

and the means to implement and communicate that plan to users, authorized persons, and rescuers. A trained, on-

site rescue team is recommended. Team members should be provided with the equipment and techniques necessary to perform a successful rescue. Training should be provided on a periodic basis to ensure rescuer prociency. Rescuers should be provided with these instructions. There should be visual contact or means of communication with the person being rescued at all times during the rescue process.

2.0 SYSTEM REQUIREMENTS

2.1 ANCHORAGE: Anchorage requirements vary with the Fall Protection application. The mounting structure on which the

equipment is placed must meet the Anchorage specications dened in Table 1.

2.2 CAPACITY: The user capacity of a complete Fall Protection system is limited by its lowest-rated maximum capacity component.

For example, if your connecting subsystem has a capacity that is less than your harness, you must comply with the capacity requirements of your connecting subsystem. See the manufacturer instructions for each component of your system for capacity

requirements.

2.3 CONNECTING SUBSYSTEMS: Connecting subsystems (self-retracting devices, energy-absorbing lanyards, lifeline

subsystems, etc.) must be suitable for your application. Refer to the subsystem manufacturer instructions for additional

information.

2.4 ENVIRONMENTAL HAZARDS: Use of this equipment in areas with environmental hazards may require additional

precautions to prevent injury to the user or damage to the equipment. Hazards may include, but are not limited to: high heat, chemicals, corrosive environments, high voltage power lines, explosive or toxic gases, moving machinery, sharp

edges, or overhead materials that may fall and contact the user or equipment. Contact 3M Technical Services for further

clarication.

2.5 LIFELINE HAZARDS: Ensure the lifeline is kept free from all hazards including, but not limited to: entanglement with

users, other workers, moving machinery, other surrounding objects, or impact from overhead objects that could fall onto

the lifeline or users.

2.6 COMPONENT COMPATIBILITY: 3M equipment is designed for use with 3M-approved components and subsystems

only. Substitutions or replacements made with non-approved components or subsystems may jeopardize compatibility of equipment and may affect the safety and reliability of the complete system.

2.7 CONNECTOR COMPATIBILITY: Connectors are compatible with connecting elements when the size and shape of either

component does not cause the connector to inadvertently open, regardless of orientation. Connectors must comply with applicable standards. Connectors must be fully closed and locked during use.

3M Connectors (snap hooks and carabiners) are designed to be used only as specied in each instruction manual. Ensure

connectors are compatible with the system components to which they are connected. Do not use equipment that is noncompatible. Use of non-compatible components may cause the connector to unintentionally disengage (see Figure 3). If the connecting element to which a connector attaches is undersized or irregular in shape, a situation could occur where

the connecting element applies a force to the gate of the connector (A). This force could then cause the gate to open (B), disengaging the connector from the connecting element (C).

2.8 MAKING CONNECTIONS: All connections must be compatible in size, shape, and strength. See Figure 4 for examples of

inappropriate connections. Do not attach snap hooks and carabiners:

A. To a D-Ring to which another connector is attached.

B. In a manner that would result in a load on the gate. Large-throat snap hooks should not be connected to standard-

size D-Rings or other connecting elements, unless the snap hook has a gate strength of 16 kN (3,600 lbf) or greater.

C. In a false engagement, where size or shape of the connector or connecting element is not compatible and, without

visual conrmation, would seem to be fully engaged.

D. To each other.

E. Directly to webbing or rope lanyard or tie-back material, unless the instruction manuals for both the lanyard and

connector specically allow such a connection.

F. To any object whose size or shape does not allow the connector to fully close and lock, or that could cause connector

roll-out.

G. In a manner that does not allow the connector to align properly while under load.

Figure 3 - Connector Compatibility Figure 4 - Making Connections

A. B. C. D.

E. F. G.

A B C

3.0 INSTALLATION

3.1 OVERVIEW: Installing a Horizontal Lifeline (HLL) System is a multi-step procedure that requires planning and awareness

of the worksite. In summary, the basic procedure for installing the HLL System is as follows:

1. Prepare the anchorage connection points for the system.

2. Connect the HLL System between the two anchorage connection points.

3. Secure the connecting subsystem to the HLL System.

System installation will have a signicant impact on fall clearance requirements. If the system is not prepared with

;

fall clearance requirements in mind, then it may be necessary to impose limits on system use.

3.2 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 specied in these instructions.

A. ANCHORAGE PLACEMENT: The anchorage connection points used by the system must be prepared before the HLL

System can be installed. This may mean securing anchorage connectors to the anchorage structure or even preparing the anchorage structure itself beforehand. Both anchorage connection points must be set at approximately the same elevation level, such that the HLL System has a slope of 5 degrees (5°) or less.

It is recommended that anchorages are prepared for overhead positioning of the HLL System, since overhead

;

positioning will help minimize fall clearance requirements.

Whenever possible, design the system for Restraint applications rather than Fall Arrest.

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B. CONNECTING SUBSYSTEM: Users of the HLL System may connect Energy-Absorbing Lanyards and Self-Retracting

Devices (SRDs) to the system. All connecting subsystems used must meet all requirements specied in Table 1 and be

approved for use with HLL systems. Fall clearance requirements will vary with the connecting subsystem used.

All connecting subsystems used should be kept as short as possible. This applies to both overall length of the subsystem and its extended length during use. Longer energy-absorbing lanyards will experience greater free fall and require more fall clearance. SRDs with greater overall length will weigh more and place more stress upon the system.

Ensure all requirements of your connecting subsystem are met before using the system. For more information,

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refer to the manufacturer instructions of your connecting subsystem.

3.3 SWING FALLS: Swing Falls occur when the anchorage point is not directly above the point where a fall occurs. The force of

striking an object in a swing fall may cause serious injury or death. Do not permit a swing fall if injury could occur. Minimize swing falls by working as directly below the anchorage point as possible. See Figure 5 for reference. The Required Fall Clearance (FC) of the user increases as User Work Radius (W) increases, since the total fall distance will be greater than if the user had fallen directly below the anchorage point.

3.4 SHARP EDGES: The HLL System must always be installed so that the horizontal lifeline does not come into contact with

sharp edges or abrasive surfaces during use. All sharp edges and abrasive surfaces within reach of the system should be covered with protective material (A). See Figure 6 for reference.

If it is not feasible to cover the sharp edge or abrasive surface, then a minimum setback distance must be maintained from the unprotected edge or surface. Additionally, connecting subsystems used with the HLL must be rated for Leading Edge applications. To prevent cutting action during a swing fall, the user must stay within 30 degrees perpendicular of the HLL System during use. Minimum setback distance requirements are listed according to system span in the table below.

System Span (B) Minimum Setback Distance System Span (B) Minimum Setback Distance

≤ 10 ft. (3.05 m) 4 ft. 0 in. (1.22 m) ≤ 40 ft. (12.19 m) 8 ft. 11 in. (2.72 m)

≤ 20 ft. (6.10 m) 5 ft. 6 in. (1.68 m) ≤ 50 ft. (15.24 m) 10 ft. 8 in. (3.25 m)

≤ 30 ft. (9.14 m) 7 ft. 2 in. (2.18 m) ≤ 60 ft. (18.29 m) 12 ft. 5 in. (3.78 m)

Figure 5 - Swing Falls Figure 6 - Sharp Edges

3.5 SELECTING A CLEARANCE CHART: Users should begin by selecting their connecting subsystem type. The user should

then follow the instructions specic to that connecting subsystem to determine what fall clearance chart to use.

All Required Fall Clearance values in these instructions include a safety factor of 2 ft. (0.6 m) plus an additional

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10-percent of HLL deection. 1 ft. (0.3 m) of additional fall clearance is included for harness stretch and D-ring slide.

All Required Fall Clearance values in these instructions were calculated using the maximum free fall distances stated

;

in Table 1. Greater free fall distances will require more fall clearance.

When using connecting subsystems made by a different manufacturer, 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.

3.6 FALL CLEARANCE FOR ENERGY-ABSORBING LANYARDS: Fall clearance is the measure of distance between a user

and the next obstruction below them. Required Fall Clearance (FC) is the amount of fall clearance needed to safely arrest the user during a fall event. Fall clearance is always measured from the top of the working platform to the top of the next obstruction below. To determine Required Fall Clearance for energy-absorbing lanyards, refer to the following sections:

A. FREE FALL DISTANCE: The user should determine how much free fall is present in their system before using the fall

clearance charts. Lanyard length and system placement (anchorage height, setback distance) are the primary factors affecting free fall distance. When a lanyard is anchored below the user’s D-ring, free fall distance will exceed lanyard length, up to as much as twice the lanyard length.

Figure 7 illustrates the amount of free fall associated with common system applications. However, the user must still verify the amount of free fall present in their intended application.

Free fall is measured from the top of the user’s D-ring before a fall to the top of that same D-ring when the lanyard tightens during a fall. 3M Fall Protection shares the following method for measuring free fall in a system:

Measuring free fall distance for an HLL:

1. Connect one end of the lanyard to the HLL. Extend the free end toward the edge of the working platform and let it hang over the fall hazard.

2. Measure how far the hook on the free end hangs below the working platform.

3. Add the initial height of the worker’s D-ring above the working platform to the measurement from Step 2. The sum of these two numbers is the free fall distance for your application.

B. FALL CLEARANCE CHARTS: See Figure 8 for reference. Required Fall Clearance (FC) is determined by Maximum

Free Fall (FF) of the system application, HLL System Span (B), and the number of users connected to the HLL System.

To determine Required Fall Clearance (FC) using Figure 8 for Energy-Absorbing Lanyards:

1. Identify the amount of free fall distance that could occur given the specic anchorage height, setback distance, and lanyard used in your application. Select the chart that meets or exceeds your Free Fall Distance (FF). It is recommended that free fall distance be kept to a minimum.

2. Select the table column that matches your number of users. Ensure the combined weight of each user (including clothing, tools, etc.) does not exceed the maximum capacity listed.

3. Find the row in the column to the far left that matches your System Span (B).

4. Find the corresponding Required Fall Clearance (FC) where the column for your number of users and the row for your System Span (B) intersect.

Figure 7 - Free Fall in HLL Systems

FF =

6.0 ft.

(1.83 m)

FF =

6.0 ft.

(1.83 m)

FF =

6.0 ft.

(1.83 m)

FF =

8.0 ft.

(2.44 m)

FF =

12.0 ft.

(3.66 m)

Figure 8 - Fall Clearance for Energy-Absorbing Lanyards

System Span

Free Fall Distance

Required Fall Clearance

FF = 6.0 ft.

(1.83 m)

≤ 10 ft.

(3.05 m)

≤ 20 ft.

(6.10 m)

≤ 30 ft.

(9.14 m)

≤ 40 ft.

(12.19 m)

≤ 50 ft.

(15.24 m)

≤ 60 ft.

(18.29 m)

FF = 8.0 ft.

(2.44 m)

≤ 10 ft.

(3.05 m)

≤ 20 ft.

(6.10 m)

≤ 30 ft.

(9.14 m)

≤ 40 ft.

(12.19 m)

≤ 50 ft.

(15.24 m)

≤ 60 ft.

(18.29 m)

≤ 310 lb. (140 kg)

x 1



12 ft. 3 in.

(3.72 m)

13 ft. 8 in.

(4.15 m)

15 ft. 0 in.

(4.58 m)

16 ft. 4 in.

(4.97 m)

17 ft. 6 in.

(5.34 m)

18 ft. 8 in.

(5.69 m)

≤ 310 lb. (140 kg)

x 1



14 ft. 10 in.

(4.52 m)

16 ft. 3 in.

(4.95 m)

17 ft. 8 in.

(5.38 m)

19 ft. 1 in.

(5.8 m)

20 ft. 4 in.

(6.2 m)

21 ft. 7 in.

(6.57 m)

x 2



13 ft. 4 in.

(4.06 m)

15 ft. 10 in.

(4.82 m)

18 ft. 4 in.

(5.58 m)

20 ft. 2 in.

(6.16 m)

21 ft. 11 in.

(6.68 m)

23 ft. 8 in.

(7.21 m)

x 2



15 ft. 11 in.

(4.85 m)

18 ft. 5 in.

(5.61 m)

20 ft. 11 in.

(6.37 m)

23 ft. 5 in.

(7.13 m)

25 ft. 4 in.

(7.73 m)

27 ft. 1 in.

(8.26 m)

FF = 12.0 ft.

(3.66 m)

≤ 10 ft.

(3.05 m)

≤ 20 ft.

(6.10 m)

≤ 30 ft.

(9.14 m)

≤ 40 ft.

(12.19 m)

≤ 50 ft.

(15.24 m)

≤ 60 ft.

(18.29 m)

≤ 310 lb. (140 kg)

x 1



18 ft. 8 in.

(5.69 m)

20 ft. 3 in.

(6.18 m)

21 ft. 11 in.

(6.67 m)

23 ft. 5 in.

(7.13 m)

24 ft. 9 in.

(7.55 m)

26 ft. 1 in.

(7.96 m)



x 2

3.7 FALL CLEARANCE FOR SELF-RETRACTING DEVICES: Fall clearance is the measure of distance between a user and

the next obstruction below them. Required Fall Clearance (FC) is the amount of fall clearance needed to safely arrest the user during a fall event. Fall clearance is always measured from the top of the working platform to the top of the next obstruction below. To determine Required Fall Clearance for Self-Retracting Devices, refer to the following sections:

A. SETBACK DISTANCE: When calculating fall clearance with an SRD, 3M Fall Protection denes two different application

types based on the physical set-up of the system. See Figure 11 for an illustration of Setback Distance (X) and HLL System Height (H). The application type determines the correct fall clearance chart to use.

SMALL SYSTEM SETBACK LARGE SYSTEM SETBACK

Applies when:

• Setback Distance (X) is less than the Retracted Length (R) of the SRD.

- OR -

• The System Height (H) is greater than or equal to the Setback Distance (X).

See Section 3.7.B for more information. See Figure 9 for

Required Fall Clearance.

B. SMALL SYSTEM SETBACK: For Small System Setback applications, Required Fall Clearance (FC) is determined by

HLL System Height (H), HLL System Span (B), and the number of users connected to the HLL System. See Figure 9 for

reference.

• SRDs should have a retracted length of 2.0 ft. (0.61 m) or less. For SRDs with a retracted length greater than

2.0 ft. (0.61 m), the difference in retracted length must be subtracted from the measured HLL System Height (H) before selecting the proper height range.

Example - For an SRD with a retracted length of 5 ft. (1.5 m) and an HLL System Height of 7 ft. (2.1 m):

1. Difference in retracted length of the SRD = 5 ft. (1.5 m) - 2 ft. (0.61 m) = 3 ft. (0.91 m)

2. HLL System Height minus the difference in retracted length = 7 ft. (2.1 m) - 3 ft. (0.91 m) = 4 ft. (1.2 m)

3. Use the number from Step 2 as your HLL System Height (H) when determining Required Fall Clearance (FC). In this

example, the user would use 4 ft. (1.2 m) for System Height (H) and select the [3 ft. - <5ft.] column in the Figure 9 charts.

Applies when:

• Setback Distance (X) is greater than or equal to the Retracted Length (R) of the SRD.

- AND -

• The System Height (H) is less than the Setback Distance (X).

See Section 3.7.C for more information. See Figure 10 for Required Fall Clearance.

To determine Required Fall Clearance (FC) using Figure 9 for SRDs:

1. Select the chart that matches your number of users. Ensure the combined weight of each user (including clothing, tools, etc.) does not exceed the maximum capacity listed.

2. Find the column in the chart that matches your System Height (H).

3. Find the row in the column to the far left that matches your System Span (B).

4. Find the corresponding Required Fall Clearance (FC) where the column for your System Height (H) and the row for your System Span (B) intersect.

C. LARGE SYSTEM SETBACK: For Large System Setback applications, Required Fall Clearance (FC) is determined by HLL

System Span (B) and the number of users connected to the HLL System. See Figure 10 for reference.

The following guidelines must be observed for Large System Setback applications:

• SRDs used with the HLL System must be rated for tie-off at knee-level or below.

• The Setback Distance (X) of the system must be greater than or equal to minimum requirements. Minimum Setback Distance is listed in the table below for each available System Span (B). If you are unable to meet minimum requirements, then your HLL System must be limited to one user per span.

System Span (B) Minimum Setback Distance System Span (B) Minimum Setback Distance

≤ 10 ft. (3.05 m) 4 ft. 0 in. (1.22 m) ≤ 40 ft. (12.19 m) 8 ft. 11 in. (2.72 m)

≤ 20 ft. (6.10 m) 5 ft. 6 in. (1.68 m) ≤ 50 ft. (15.24 m) 10 ft. 8 in. (3.25 m)

≤ 30 ft. (9.14 m) 7 ft. 2 in. (2.18 m) ≤ 60 ft. (18.29 m) 12 ft. 5 in. (3.78 m)

To determine Required Fall Clearance (FC) using Figure 10 for SRDs:

1. Find the Minimum Setback Distance for your system. Minimum Setback Distance is determined by HLL System Span (B) and is listed in the table above. If your Setback Distance (X) does not meet minimum requirements, then the HLL System must be limited to one user per span.

2. Select the table column that matches your number of users. Ensure the combined weight of each user (including clothing, tools, etc.) does not exceed the maximum capacity listed.

3. Find the row in the column to the far left that matches your System Span (B).

4. Find the corresponding Required Fall Clearance (FC) where the column for your number of users and the row for your System Span (B) intersect.

Figure 9 - Fall Clearance for SRDs (Small System Setback)

System Span

System Height

Setback Distance

X < R

X ≤ H



x 1

(12.19 m)

(15.24 m)

(18.29 m)

≤ 310 lb.

(140 kg)

≤ 10 ft.

(3.05 m)

≤ 20 ft.

(6.10 m)

≤ 30 ft.

(9.14 m)

≤ 40 ft.

≤ 50 ft.

≤ 60 ft.

SRD Retracted Length

Required Fall Clearance

0 ft. - <3 ft. 3 ft. - <5 ft. 5 ft. - <6.5 ft. ≥6.5 ft.

15 ft. 0 in.

(4.56 m)

16 ft. 1 in.

(4.91 m)

17 ft. 3 in.

(5.26 m)

18 ft. 5 in.

(5.62 m)

19 ft. 7 in.

(5.96 m)

20 ft. 9 in.

(6.32 m)

11 ft. 10 in.

(3.6 m)

13 ft. 0 in.

(3.95 m)

14 ft. 1 in.

(4.3 m)

15 ft. 3 in.

(4.65 m)

16 ft. 5 in.

(5.01 m)

17 ft. 7 in.

(5.35 m)

8 ft. 11 in.

(2.71 m)

10 ft. 1 in.

(3.06 m)

11 ft. 2 in.

(3.41 m)

12 ft. 4 in.

(3.76 m)

13 ft. 5 in.

(4.09 m)

14 ft. 6 in.

(4.41 m)

6 ft. 8 in.

(2.04 m)

7 ft. 10 in.

(2.39 m)

8 ft. 11 in.

(2.71 m)

9 ft. 11 in.

(3.02 m)

10 ft. 11 in.

(3.32 m)

11 ft. 10 in.

(3.62 m)



x 2

(12.19 m)

(15.24 m)

(18.29 m)

≤ 310 lb.

(140 kg)

≤ 10 ft.

(3.05 m)

≤ 20 ft.

(6.10 m)

≤ 30 ft.

(9.14 m)

≤ 40 ft.

≤ 50 ft.

≤ 60 ft.

0 ft. - <3 ft. 3 ft. - <5 ft. 5 ft. - <6.5 ft. ≥6.5 ft.

13 ft. 0 in.

(3.95 m)

15 ft. 3 in.

(4.65 m)

17 ft. 7 in.

(5.36 m)

19 ft. 11 in.

(6.06 m)

21 ft. 6 in.

(6.56 m)

23 ft. 0 in.

(7.01 m)

10 ft. 1 in.

(3.06 m)

12 ft. 4 in.

(3.77 m)

14 ft. 4 in.

(4.37 m)

15 ft. 10 in.

(4.82 m)

17 ft. 3 in.

(5.27 m)

18 ft. 9 in.

(5.71 m)

7 ft. 10 in.

(2.39 m)

9 ft. 8 in.

(2.94 m)

11 ft. 1 in.

(3.38 m)

12 ft. 8 in.

(3.85 m)

14 ft. 2 in.

(4.31 m)

15 ft. 8 in.

(4.77 m)

Figure 10 - Fall Clearance for SRDs (Large System Setback)

≤ 310 lb. (140 kg)

System Span

System Height

Setback Distance

SRD Retracted Length

Required Fall Clearance

System Span

System Height

Setback Distance

≤ 10 ft.

(3.05 m)

≤ 20 ft.

(6.10 m)

≤ 30 ft.

(9.14 m)

≤ 40 ft.

(12.19 m)

≤ 50 ft.

(15.24 m)

≤ 60 ft.

(18.29 m)

x 1



11 ft. 11 in.

(3.64 m)

13 ft. 1 in.

(3.99 m)

14 ft. 3 in.

(4.34 m)

15 ft. 5 in.

(4.69 m)

16 ft. 7 in.

(5.04 m)

17 ft. 8 in.

(5.39 m)

x 2



12 ft. 4 in.

(3.77 m)

13 ft. 9 in.

(4.19 m)

15 ft. 3 in.

(4.64 m)

16 ft. 8 in.

(5.09 m)

18 ft. 7 in.

(5.66 m)

20 ft. 7 in.

(6.27 m)

Figure 11 - SRD Fall Clearance Factors

X ≥ R

and

X > H

Required Fall Clearance

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