How to Inspect Webbing Sling for Wear and Damage: A Complete Guide

Webbing slings are essential lifting tools used across industries for their flexibility, strength, and ease of handling. However, their safety and reliability heavily depend on regular inspections and proper maintenance. Whether you're a site supervisor, rigger, or safety officer, knowing how to inspect webbing slings for wear and damage is critical for ensuring workplace safety and preventing costly equipment failure.

Why Is It Important to Inspect Webbing Slings?

Webbing slings are often subjected to harsh environments, heavy loads, and constant use. Over time, these conditions can lead to:

• Fabric fraying

• Abrasions or cuts

• UV damage

• Chemical exposure

• Stitches coming undone

Using a compromised sling can result in catastrophic failure, risking equipment damage, serious injury, or even fatalities. Regular inspections are not just a best practice—they’re a legal and safety requirement in many industries.

Types of Damage Common in Webbing Slings

Before we outline the inspection process, it’s helpful to know what types of damage you’re looking for. Here are the most common forms:

1. Cuts and Tears

Sharp edges or contact with metal can cause visible cuts in the webbing. Even small tears can reduce load-bearing capacity.

2. Abrasion

Friction from rough surfaces can cause surface fibers to wear down, weakening the material over time.

3. Broken or Worn Stitching

Stitching holds the sling together. If the thread is frayed, broken, or loose, the structural integrity is compromised.

4. Burns or Heat Damage

High temperatures, weld spatter, or friction can cause melting or scorching of the fabric.

5. Chemical Damage

Acids, alkalis, and solvents can degrade synthetic fibers, leading to discoloration, stiffness, or brittleness.

6. UV Degradation

Long-term exposure to sunlight can weaken the fibers. Fading color and powdery texture are warning signs.

7. Mold or Mildew

Damp storage can cause fungal growth, which weakens the material and poses health risks.

8. Knots or Twists

Improper storage or usage can lead to knots that stress the sling and affect load distribution.

How to Inspect a Webbing Sling: Step-by-Step Process

Step 1: Preparation

• Clean the sling before inspecting to remove dirt or oil that could hide damage.

• Lay it flat on a clean, well-lit surface.

Step 2: Visual Inspection

Go through the entire length of the sling, looking for:

• Frayed edges or fibers

• Cuts, tears, or holes

• Discoloration or hardening (chemical or heat damage)

• Burn marks

• Exposed red warning yarns (in slings designed with them)

Step 3: Tactile Inspection

Run your hands along the sling to feel for:

• Stiff spots (could indicate chemical exposure)

• Hard or crusty areas (possible heat damage)

• Uneven texture or lumps (suggests internal wear)

Step 4: Check the Eyes (Loops)

The eyes or ends of the sling bear the most load and often show wear first.

• Look for worn stitching

• Check for elongation, tearing, or fraying

• Ensure metal fittings (if any) are not corroded or deformed

Step 5: Label and Identification

Make sure the sling has a legible ID tag with information like:

• Manufacturer’s name

• Working load limit (WLL)

• Material type

• Length and serial number

If the label is missing or unreadable, remove the sling from service immediately.

Inspection Frequency: How Often Should You Check Webbing Sling?

According to standards such as OSHA and ASME B30.9, sling inspections fall into three categories:

1. Initial Inspection

• Conducted upon receiving a new sling.

• Ensures the sling is undamaged and meets specifications.

2. Frequent Inspection

• Before each use or shift.

• Performed by the sling operator or designated user.

3. Periodic Inspection

• Conducted by a qualified inspector at defined intervals.

• Based on usage frequency, environmental conditions, and manufacturer guidelines:

o Normal service: Every 12 months

o Severe service: Every 3 months or more frequently

o Special or harsh environments: Before each use

Keep a written record of periodic inspections for compliance and traceability.

When Should a Webbing Sling Be Removed from Service?

Immediately remove the sling if you notice any of the following:

• Cut or worn webbing

• Broken or damaged stitching

• Chemical or heat damage

• Illegible or missing ID tag

• Severe UV damage (discoloration, brittleness)

• Sling fails to pass visual or tactile inspection

Never try to repair slings yourself unless you are certified and authorized by the manufacturer. Damaged slings should be destroyed and clearly marked as unusable.

Pro Tips for Webbing Sling Maintenance

To extend the lifespan of your webbing slings and reduce wear:

Use Edge Protectors

Prevent cuts by using edge guards or sleeves when lifting sharp or abrasive loads.

Store Properly

Hang slings in a cool, dry, and shaded area. Avoid contact with chemicals or sunlight.

Avoid Dragging

Never drag slings across the floor or over rough surfaces.

Match the Sling to the Load

Use the right sling type and capacity for the specific job to avoid overloading.

Train Your Team

Ensure all users are trained in proper sling use, inspection, and safety practices.

Industry Standards to Reference

Familiarize yourself with these regulations:

• OSHA 1910.184 – Slings standard for general industry

• ASME B30.9 – Slings safety standard

• EN 1492 – European standard for textile slings

• ISO 4878 – Worldwide sling safety guidelines

Compliance with these ensures you're operating legally and safely.

Webbing slings are incredibly versatile and useful, but like any lifting equipment, they’re only as reliable as their condition allows. Routine inspections for wear and damage are non-negotiable.