Sling Inspection Checklist

Sling inspection is an important part of a rigger’s routine. A useful checklist helps organize the examination, identify questionable equipment, and communicate findings before the next lift. It should support informed decisions, not become a box-ticking exercise that overlooks how a sling is actually used.

This guide brings together inspection considerations for synthetic round slings, alloy chain slings, and synthetic web slings. Use it alongside current manufacturer instructions, the applicable edition of relevant standards, and your workplace procedures. It is an overview, not a complete inspection standard or authorization to keep damaged equipment in service.

Organizing Your Sling Inspection Routine

The original checklist references ASME B30.9 and distinguishes initial, frequent, and periodic inspections. Confirm the requirements applicable to your equipment and operation rather than relying on a blog’s publication date. Assign inspection responsibilities clearly so everyone knows who examines equipment and who makes decisions about its condition.

Initial Inspection

Before introducing a new, altered, modified, or repaired sling into use, arrange the required assessment by the designated person. Check the identification against the requested item, review the accompanying information, and resolve discrepancies before the sling reaches the work area. Receiving an item does not automatically establish its suitability for a particular lift.

Frequent Inspection

Build the user’s inspection into preparation for the work. Follow the applicable pre-use and shift-based requirements, and remain alert to changes during handling. A sling that was acceptable earlier can be damaged by a later event. Stop and reassess when conditions change or an incident raises concern.

Periodic Inspection

Plan a more complete examination at intervals established for the sling and service conditions. Make the equipment accessible and provide its history where available. Periodic inspection is a separate part of the inspection programme, not a substitute for checks made by the user before work.

Synthetic Round Sling Inspection Checklist

Remove a questionable round sling from service for assessment under the applicable criteria. Look for:

• Missing or illegible sling identification.
• Acid or caustic burns and evidence of heat damage.
• Holes, tears, cuts, abrasive wear, or snags exposing core yarns.
• Broken or damaged core yarns.
• Weld spatter exposing core yarns.
• Knots in the sling body.
• Pitted, corroded, cracked, bent, twisted, gouged, or broken fittings.
• Any other condition creating doubt about continued use.

Examine the full accessible length rather than checking only the most visible section. Avoid treating an intact-looking portion of the cover as proof that the whole sling is sound. Follow the manufacturer’s examination method and do not cut open or modify the cover to investigate damage yourself.

Alloy Chain Sling Inspection Checklist

For chain slings, examine the assembly and its components for conditions including:

• Missing or illegible identification.
• Cracks or breaks.
• Excessive wear, nicks, or gouges.
• Stretched links or components.
• Evidence of heat damage.
• Excessive pitting or corrosion.
• Links or components that do not articulate freely.
• Weld spatter.
• Other visible damage or conditions that create doubt.

Where acceptance depends on dimensions or wear limits, use the correct manufacturer information and applicable criteria. A general checklist cannot supply every measurement for every chain size. Do not estimate an allowable reduction from appearance alone or use a limit intended for a different component.

Synthetic Web Sling Inspection Checklist

Examine web slings for damage to the webbing, eyes, stitching, and fittings. Conditions requiring attention include:

• Missing or illegible identification.
• Acid or caustic burns.
• Melting or charring.
• Holes, tears, cuts, or snags.
• Broken or worn stitching in load-bearing splices.
• Excessive abrasive wear.
• Knots in the sling.
• Discoloured, brittle, or stiff areas that may indicate exposure damage.
• Pitted, corroded, cracked, bent, twisted, gouged, or broken fittings.
• Any other condition creating doubt about continued use.

Take enough time to see both sides and the areas around connection points. If dirt, restricted access, or the way equipment is stored prevents a meaningful examination, address that obstacle using the appropriate procedure. An incomplete view should not be recorded as a completed inspection.

Include Hooks and Rigging Hardware

A sling assembly is more than its flexible body. Include attached hooks, links, and other hardware in the examination. The original checklist references ASME B30.10 for hooks and ASME B30.26 for rigging hardware. Confirm current applicable requirements and manufacturer instructions for each component rather than assuming one checklist covers everything.

Setting Inspection Intervals and Keeping Records

Consider frequency of use, severity of service, the nature of the lifts, and experience with similar equipment when reviewing the inspection programme. Share changes in operating conditions with the responsible person. Equipment history is more useful when it describes what happened than when it simply records “checked.”

Where records are required, connect each entry to the sling’s identification. Include the examination date, inspector, findings, and resulting action. Photographs can help communicate a concern, but they should not replace the required physical examination. Keep removed equipment distinguishable from items available for use.

What to Do When Damage Is Found

Stop using questionable equipment and follow your workplace’s isolation process. Explain the concern to the responsible person and prevent accidental reuse while assessment is pending. Do not improvise repairs, conceal damage, or assume a lower load makes a defective sling acceptable. Repair eligibility and any testing or documentation must be determined through the appropriate manufacturer or qualified service process.