If you're working at heights over 6 feet, you need fall protection. That means wearing a harness and using cables or other gear to keep you from falling. This is true for working on roofs, from ladders, or any raised platform. It's really important to use this equipment correctly and get trained on how to use it safely, because falls from heights can cause serious life threatening injuries.Â
Harnesses: Beyond the Basics
Materials and Durability:
Harnesses are typically made from synthetic fibers like nylon or polyester, chosen for their strength and resistance to abrasion.
Webbing width and thickness influence strength. Wider webbing distributes force better.
Look for harnesses with UV-resistant webbing, especially for outdoor work.
Specialized Harnesses:
Positioning Harnesses: Used for work positioning, allowing workers to lean back and work hands-free (e.g., utility pole work). They have side D-rings.
Rescue Harnesses: Designed for confined space rescue or high-angle rescue, with specific attachment points for rescue equipment.
Arc Flash Harnesses: Made from non-conductive materials for electrical work.
Inspection Details:
Check for frayed or cut webbing, broken stitching, deformed D-rings, and damaged buckles.
Look for signs of chemical damage (discoloration, stiffness).
Inspect labels for legibility and compliance with standards.
Inspect shock absorbing lanyards to ensure that the tear away pack is intact.
Anchor Points: Engineering and Verification
Engineered Anchor Points:
These are designed and installed by qualified engineers, with documented load capacities.
They may be permanent fixtures (e.g., roof anchors) or temporary systems (e.g., beam clamps).
Structural Steel:
Verify the steel's load-bearing capacity and suitability as an anchor point.
Use appropriate connectors (e.g., beam clamps, slings).
Temporary Anchor Points:
Roofing carts, weighted anchor systems, and other temporary solutions must be installed and used according to manufacturer instructions.
Ensure they are stable and secure.
Anchor Point Location:
Minimize swing falls by positioning anchor points directly overhead.
Consider the potential fall distance and clearance requirements.
If side anchors must be used, calculations of swing fall distance must be made.
Lanyards and SRLs: Specifics and Considerations:
Shock-Absorbing Lanyards:
The shock absorber should activate at a specific force to limit impact.
Inspect the tear-away pack for signs of activation.
Understand the maximum fall distance and clearance requirements.
Self-Retracting Lifelines (SRLs):
Choose SRLs with appropriate working lengths and braking mechanisms.
Ensure the SRL is compatible with the harness and anchor point.
SRLs that have been involved in a fall, must be removed from service.
Connectors:
Use locking snap hooks or carabiners to prevent accidental disconnection.
Ensure connectors are compatible with the harness and anchor point.
Avoid side loading of snap hooks.
Rescue Procedures: Advanced Planning:
Suspension Trauma:
Understand the risks and symptoms of suspension trauma.
Provide suspension trauma straps to allow fallen workers to relieve pressure on their legs.
Rescue Equipment:
Rescue poles, descent devices, and rope systems should be readily available.
Ensure rescue equipment is inspected and maintained regularly.
Rescue Training:
Conduct regular rescue drills to practice rescue procedures.
Train personnel on how to use rescue equipment and perform assisted rescues.
Training should include how to determine that a person is unconscious, and how to lower them to the ground safely.
Emergency Response Plan:
Develop a written emergency response plan that includes procedures for fall rescues.
Communicate the plan to all workers.
Commonly Observed Problems: Real-World Scenarios
Using Guardrails as Anchor Points: Guardrails are often not designed to withstand fall forces.
Improper Ladder Use: Standing on the top step of a ladder or overreaching can lead to falls.
Unprotected Roof Edges: Working on roofs without guardrails or fall protection systems is extremely dangerous.
Ladders on Scaffolding: Ladders should never be used on any sort of scaffolding.
Lack of Fall Hazard Awareness: Workers may underestimate the risks of falls in seemingly low-risk situations.
Using Damaged Equipment: Workers may continue to use damaged harnesses, lanyards, or SRLs.
Not having a competent person: OSHA requires that a competent person is on site to inspect, and approve fall protection systems.