Sling & Rigging Hardware Inspection
Slings and hardware must be inspected by a competent person before each shift or use, and taken out of service when damaged. Every sling must have a legible tag showing its rated capacity.
- Construction
- General Industry
Photo: examples of damaged slings: birdcaged wire rope, cut synthetic sling, stretched chain link
Inspection schedule
| Inspection | When | Records |
|---|---|---|
| Initial | New or repaired slings, before first use | Recommended |
| Frequent (pre-use) | Before each shift or each use, by a competent person | Not usually required |
| Periodic | At least yearly (more often for heavy or harsh use), by a qualified person | Required for some sling types; keep them for all |
All slings
- ID tag present and readable (rated capacities). No tag? Don’t use it.
- Right sling for the load, hitch and environment (heat, chemicals, sharp edges)
- Rated capacity for the hitch and angle you’ll use is more than the load on that sling
- End fittings, eyes and splices undamaged
Wire rope slings: remove if
- Broken wires above the allowed limit (for example, 10 randomly distributed broken wires in one rope lay, or 5 in one strand in one lay)
- Kinking, crushing, birdcaging or other distortion
- Heat damage or severe corrosion
- Reduced diameter or damaged end fittings
Alloy chain slings: remove if
- Links stretched, bent, twisted, nicked or gouged
- Excessive wear or cracks
- Not marked as alloy steel, or missing the tag
Synthetic web and round slings: remove if
- Cuts, tears, punctures, snags or crushed areas
- Burns, melting, charring or chemical damage
- Red warning (core) yarns showing
- Broken or worn stitching, knots, or damaged fittings
Hardware
- Shackles: correct pin (never a bolt substitute), pin fully threaded and not bent, body not deformed
- Hooks: safety latch works, throat not opened or twisted beyond the manufacturer’s limits, no cracks
- Rated capacity marked on hooks, shackles and eyebolts
Eyebolts and other hardware
- Shoulder eyebolts used for any angled pull, and their capacity reduced as the angle increases
- Eyebolts fully seated, with threads in good condition
- Turnbuckles, swivels and links marked and undamaged
- No homemade or welded hardware
Storing slings
- Hang slings on racks in a dry area, off the ground.
- Keep synthetic slings out of sunlight, heat and chemicals.
- Don’t throw rigging in a truck bed under steel or tools.
Damaged rigging must be removed from service immediately. Tag it and cut or destroy it so it can’t be used by mistake. Never repair slings on site.
Video: sling inspection walkthrough
Standards & references
- 29 CFR 1926.251: Rigging equipment for material handling
- 29 CFR 1910.184: Slings
- ASME B30.9 (slings), B30.10 (hooks), B30.26 (rigging hardware). See ASME B30.
Last updated: