A worn shackle costs twenty dollars. The load it drops costs a life. Rigging gear inspection is unlike almost anything else on a site because the gear is cheap, uncountable, and consumable — a yard can hold hundreds of slings, shackles, and hooks, and any single one can be quietly condemned by one cut, one stretched link, or a hook throat opened a few percent too far. The danger isn't gradual wear you watch on a chart; it's one item crossing its removal threshold and getting picked up for the next lift anyway. This guide covers the removal criteria by gear type, the inspection cadence the standards actually require, and how a per-item register keeps a condemned sling from ever going back on the hook. Book a demo to see every piece of gear on its own record.
When does each piece of rigging come out of service?
Pick a gear type. See the conditions that condemn it — the thresholds a competent person is checking against on every inspection.
- Ten randomly broken wires in one rope lay, or five broken wires in one strand in one lay
- Wear or scraping of one-third the original outer wire diameter
- Kinking, crushing, birdcaging, or other distortion of the rope structure
- Severe corrosion, heat damage, or cracked/deformed/worn end attachments
- Missing or illegible identification
- Cracks or breaks anywhere in the chain or fittings
- Excessive wear, nicks, or gouges (a nick deep enough to catch a fingernail is cause for concern)
- Stretched links or fittings, or bent, twisted, or deformed links
- Evidence of heat damage, weld splatter, or excessive pitting/corrosion
- Links that no longer hinge freely, or missing/illegible identification
- Holes, tears, cuts, snags, or excessive abrasive wear
- Melting, charring, or acid/caustic burns on any part
- Broken or worn stitching in load-bearing splices
- Discoloration, brittle or stiff areas (possible chemical, UV, or heat damage)
- Knots, or missing/illegible identification
- Cracks, bending, or visible damage on the shackle body
- Wear or distortion that reduces the original dimension beyond the allowance
- Pins seized, cross-threaded, or not seating fully; worn threads
- A substituted or non-matching pin — only the correct manufacturer pin
- Missing or illegible working-load-limit markings
- Throat opening increased beyond the manufacturer/standard allowance
- Twist from the plane of the unbent hook beyond the allowance
- Wear at the bearing point or saddle beyond the allowance
- Cracks, sharp nicks, or gouges; a latch that no longer functions where required
- Missing or illegible identification
These are representative conditions — the governing standard and the manufacturer's criteria are the authority for your gear, so always inspect to them. The point is that each type is condemned by different, specific thresholds a competent person checks against. Book a demo to see type-specific removal criteria built into each template
Rigging gear inspection fails in a specific, repeatable way: the crew does the daily visual check religiously, and everyone assumes that's the program. It isn't. The standards layer a recorded periodic inspection on top of the daily check, and they require every piece to be individually identified — because you can't manage what you can't tell apart. The rest of this guide is the cadence, the identity problem, and the quarantine step that actually keeps condemned gear off the hook.
Three inspections, not one: initial, frequent, periodic
The most common compliance gap in rigging isn't skipping inspections — it's running only one of the three the standards require and thinking the job's done. OSHA 1910.184 and 1926.251, together with ASME B30.9, define a layered program, and each layer catches something the others miss.
Initial inspection
Performed by a qualified person before any new, repaired, altered, or modified gear is first put into service — confirming the item matches its tag, its rated capacity, and its intended use. This is the baseline the item's whole record starts from.
Frequent inspection
A visual and hands-on check by a competent person each day or shift the gear is used, plus during use where conditions warrant. No written record is required — but a distant glance doesn't count; it's a close, tactile inspection of the sling and all fastenings.
Periodic inspection
A documented inspection with a written record, by a designated competent or qualified person, at intervals set by service severity. This is the layer most often missed — and the one an auditor asks to see, because it's the only one that leaves proof.
How often the periodic inspection falls is driven by service classification: normal service (routine use at or below rated load) typically runs to a yearly documented inspection; severe service (chemical exposure, high heat, abrasive environments) tightens to monthly-to-quarterly; and special service is set by a qualified person. Match the interval to how hard the gear actually works, and confirm the exact frequencies and criteria against the applicable standard for your operation. Start a free trial and periodic inspections schedule themselves by each item's service class instead of living on a wall calendar.
You can't inspect what you can't identify
Here's the problem unique to rigging: the gear all looks alike. Two identical-looking web slings on the same rack can have wildly different histories — one three months old, one condemned last week and somehow still in the pile. The standards address this by making identification mandatory: a sling without legible identification markings can't legally be used, and the same principle runs through shackles and hooks, which carry their working load limit as a permanent marking.
That identity is the foundation of a rigging register — a record where every individual sling, shackle, hook, and accessory has its own entry with a unique ID, its rated capacity, its certification, its inspection history, and its current status. Without it, "inspecting the rigging" means inspecting a pile and hoping; with it, every piece is a tracked asset you can pull up, and a condemned item has a status that follows it rather than a memory that fades. When an inspector or an incident investigation asks for the history of the exact sling that was on the hook, the register is the only thing that can answer. Book a demo to see a per-item rigging register with photos and certificates
Quarantine: the step between "failed" and "gone"
Finding a condemned sling is only half the job. The dangerous gap is between the moment a piece fails inspection and the moment it's physically incapable of going back on a hook — because in that gap, a failed sling looks exactly like a good one on the rack. Most dropped-load incidents involving old gear trace back to something that was known to be bad but never removed from circulation.
A defensible program closes that gap deliberately: the instant an item meets a removal criterion, its status flips to out-of-service, it's physically segregated from the usable gear, and — for genuinely condemned items — it's destroyed so it can't be salvaged (chain slings, for example, are often cut into short lengths and recycled). The record has to reflect that journey: found, quarantined, and either repaired-and-recertified by a qualified person or destroyed. A status that lives only in someone's head is exactly how a sling that "should have come out two months ago" ends up back in service. Book a demo to see a defect flip an item to quarantine automatically
From a rigging supervisor who runs the register
We had a near-miss with a round sling that had a cut you'd only see if you rolled the cover back. It should've been binned at the last periodic — but our "periodic" was a guy walking the rack once a year with a clipboard, and half the tags were rubbed off so he couldn't even tell which sling he'd looked at. No IDs, no history, no proof.
Tagged everything, gave each piece its own record with a photo and cert date, and split the inspections into the three tiers properly. Now a failed sling flips to quarantine the second it's logged, and it's off the rack before the next shift. When the client's safety auditor asked for the history on a specific shackle, I pulled it up with every inspection since we bought it. The register turned a pile of look-alike gear into assets I can actually account for.
Rigging gear inspection FAQs
How often does rigging gear need to be inspected?
Rigging gear inspection has three levels under OSHA (1910.184 and 1926.251) and ASME B30.9, not one. An initial inspection is performed by a qualified person before any new, repaired, altered, or modified item is first used. A frequent inspection is a visual and hands-on check by a competent person each day or shift the gear is used, plus during use where service conditions warrant — no written record is required for this one. A periodic inspection is a documented inspection with a written record, performed at intervals set by service severity: typically yearly for normal service, monthly to quarterly for severe service (chemical exposure, high heat, abrasive conditions), and as determined by a qualified person for special service. The most common compliance gap is doing the daily frequent check faithfully but skipping the recorded periodic inspection, which is the only tier that leaves documented proof. Always confirm the specific frequencies and service classifications that apply to your gear against the governing standard and the manufacturer's recommendations.
When should a wire rope sling be removed from service?
Under ASME B30.9, a wire rope sling should be removed from service when representative conditions such as these are present: ten randomly distributed broken wires in one rope lay, or five broken wires in one strand in one lay; wear or scraping of one-third of the original diameter of the outside individual wires; kinking, crushing, birdcaging, or any other damage that distorts the rope structure; evidence of heat damage; severe corrosion of the rope, end attachments, or fittings; end attachments that are cracked, deformed, or worn to the point they reduce the sling's strength; or missing or illegible identification. Other visible damage that raises doubt about continued safe use is also cause for removal. These are the commonly cited thresholds, but the governing standard and the manufacturer's criteria are the authority for your specific slings, so inspect to them and, when in doubt, take the sling out of service — the cost of retiring a sling is trivial next to the cost of a dropped load.
What are the removal criteria for a hook and a shackle?
Hooks are governed by ASME B30.10 and shackles by ASME B30.26. A hook is generally removed from service when the throat opening has increased beyond the manufacturer's or standard's allowance, when it is twisted beyond the allowed limit from the plane of the unbent hook, when wear at the bearing point or saddle exceeds the allowance, when there are cracks, sharp nicks, or gouges, when a required latch no longer functions, or when identification is missing or illegible. A shackle is removed when the body shows cracks, bending, or visible damage; when wear or distortion reduces original dimensions beyond the allowance; when the pin is seized, cross-threaded, or does not seat fully, or has worn threads; when a substituted or non-matching pin has been used instead of the correct manufacturer pin; or when the working-load-limit markings are missing or illegible. Because the exact numerical allowances vary by size, type, and manufacturer, always measure against the governing standard and the manufacturer's specification for the specific item rather than a generic figure.
Why does every sling and shackle need its own identification?
Identification is both a legal requirement and the practical foundation of any rigging program. Under the standards, a sling without legible identification markings must not be used, and shackles and hooks must carry permanently affixed, legible markings including their working load limit. The reason is that rigging gear is nearly impossible to manage otherwise: two identical-looking slings can have completely different ages, histories, and conditions, and without a unique identity you cannot tell which one was inspected, which one was condemned, or which one was actually on the hook during an incident. Unique identification turns each piece into a trackable asset with its own record — rated capacity, certification, inspection history, and current status. It is also what makes a quarantine meaningful: a condemned item's out-of-service status can only follow the item if the item can be told apart from every other one on the rack. When an auditor or an investigator asks for the history of a specific piece of gear, that individual identity is the only thing that can produce an answer.
What should happen to rigging gear that fails inspection?
Gear that meets a removal-from-service criterion must be taken out of use immediately, and a defensible program does not stop at "noticed it's bad." The item's status should be changed to out-of-service on its record, and it should be physically segregated from the usable gear so it cannot be picked up for a lift — the dangerous gap is the period where a failed sling still sits on the rack looking like a good one. From there, the item is either repaired and recertified by a qualified person (repairs must be done by the manufacturer or a qualified person, and the item re-inspected before returning to service) or, if it is genuinely condemned, destroyed so it cannot be salvaged and returned to circulation; chain slings, for instance, are commonly cut into short lengths before disposal. The record should capture that full journey — found, quarantined, and resolved — so there is proof the item was handled correctly. Relying on memory or an informal "don't use that one" is exactly how gear that should have been retired ends up back in service.
Turn a pile of look-alike rigging into a register you can prove
HVI gives every sling, shackle, and hook its own record — unique ID, rated capacity, certification with expiry alerts, type-specific removal criteria, photo evidence, and a quarantine status that pulls a condemned item out of the pool the moment it fails. The three inspection tiers schedule themselves, and when an auditor asks for the history of one exact sling, you produce it in seconds. See it on your own rigging inventory.
No credit card · Per-item rigging register from day one · Records exportable on demand
