A sling gets inspected each day before use by a competent person designated by the employer, in construction and general industry alike, every shift as part of the rigging check on a construction site, and again whenever service conditions warrant. That is 29 CFR 1926.251(a)(1), which requires rigging equipment for material handling to be "inspected prior to use on each shift and as necessary during its use to ensure that it is safe," then 1926.251(a)(6) and 1910.184(d), which in identical words require the sling and all its fastenings and attachments to be inspected "each day before being used" by "a competent person designated by the employer." Defective rigging equipment "shall be removed from service" under 1926.251(a)(1), damaged or defective slings "immediately" under (a)(6), and the standards back the inspection with hard removal numbers. What the rules mostly do not require is paperwork, with one precise exception this article covers.
Under 29 CFR 1926.251 and 1910.184, slings are inspected before use every shift or every day, by a competent person designated by the employer under both 1926.251(a)(6) and 1910.184(d), against removal criteria with hard numbers. The only sling record the federal text requires is the retained, examinable record of the most recent thorough inspection of each alloy steel chain sling, on a clock no longer than 12 months.
Monday morning at the gang box
A rigger pulls a chain bridle out of the gang box to fly roof trusses. The tag that once stated its grade and rated capacity got polished off against a steel column sometime last year. Nobody remembers when the bridle was last looked at by someone whose job that was, and the crane is on the clock. On most jobsites that bridle goes to work, because the sling inspection is the one everybody assumes somebody else did.
It is also one of the easier citations an inspector can write. The gear is lying in the open, the tag is legible or it is not, the broken wires are countable, and the one record the standard requires either exists or it does not. Unlike a scaffold or a trench, checking a contractor's rigging takes a compliance officer about four minutes.
The inspection schedule, in the text
| Situation | Requirement | Where |
|---|---|---|
| Construction, any rigging equipment | Inspected "prior to use on each shift and as necessary during its use to ensure that it is safe" | 1926.251(a)(1) |
| Construction, every sling | Inspected for damage or defects "each day before being used," by "a competent person designated by the employer," plus additional inspections "during sling use, where service conditions warrant" | 1926.251(a)(6) |
| General industry, every sling | Inspected for damage or defects "each day before being used," by "a competent person designated by the employer," plus additional inspections "where service conditions warrant" | 1910.184(d) |
| Alloy steel chain slings | A further thorough inspection on a regular basis, at intervals set by frequency of use, severity of conditions and the nature of the lifts, and "in no event... at intervals greater than once every 12 months" | 1926.251(b)(6)(i) and 1910.184(e)(3) |
| Anything found defective | Rigging equipment "shall be removed from service"; damaged or defective slings "immediately" | 1926.251(a)(1), (a)(6) |
On the sling itself the two codes agree to the word: the daily inspection is done by a competent person designated by the employer, at 1926.251(a)(6) and 1910.184(d). The difference sits one level up. The construction rule also requires every piece of rigging equipment, not only slings, to be checked prior to use on each shift under (a)(1), and that sentence names no performer, so your rigging program has to say who does it. A crew that cannot name its sling inspector has, in practice, answered the compliance officer's first question already.
The tag is a requirement, not a convenience
Before the first hook goes on, the sling has to identify itself. 1926.251(a)(2)(i) limits employers to rigging that "has permanently affixed and legible identification markings as prescribed by the manufacturer" indicating the recommended safe working load, and for welded alloy steel chain slings, (b)(1) requires "permanently affixed durable identification stating size, grade, rated capacity, and sling manufacturer." The chain bridle from the gang box with its tag worn blank is not a judgment call: with no legible marking there is no rated capacity to rig against, and putting it to work violates the identification requirement on its own, before anyone argues about the condition of the links.
The one written record OSHA demands
Neither code requires the daily pre-use inspection to be documented. The text requires exactly one sling record, and both codes use the same sentence for it:
"The employer shall make and maintain a record of the most recent month in which each alloy steel chain sling was thoroughly inspected, and shall make such record available for examination." — 1926.251(b)(6)(ii); identically at 1910.184(e)(3)(ii)
The thorough inspection behind that record has a named performer and named content of its own in general industry: under 1910.184(e)(3)(iii) it is done by a competent person designated by the employer and "shall include a thorough inspection for wear, defective welds, deformation and increase in length."
Three details in that sentence do real work. It is per sling: "each alloy steel chain sling" needs its own entry, which is why the record collapses the moment slings are not individually identifiable. It is retained: "make and maintain," not perform and forget. And it is producible: "available for examination" means an inspector can ask for it on the spot, the same way they ask for crane inspection records.
The daily inspection is a different story. Writing it down is not a federal requirement, and a vendor telling you OSHA mandates a signed daily sling checklist is adding to the text. What the undocumented inspection cannot do is prove itself later. After a dropped load, "we check every morning" is testimony; a dated entry with the inspector's name is evidence. The gap between what the rule requires and what a claim defense needs is exactly where most rigging programs are thinnest.
Removal from service: the numbers inspectors count
The removal criteria are the most concrete part of both standards, and the wire rope numbers differ between the two codes, a distinction most summaries blur:
| Sling type | Construction — 1926.251 | General industry — 1910.184 |
|---|---|---|
| Wire rope | "in any length of eight diameters, the total number of visible broken wires exceeds 10 percent of the total number of wires, or... other signs of excessive wear, corrosion, or defect" — (c)(4)(iv) | Immediate removal for "ten randomly distributed broken wires in one rope lay, or five broken wires in one strand in one rope lay," plus wear, kinking, crushing, heat damage, corrosion, end-attachment defects — (f)(5) |
| Synthetic web | Acid or caustic burns · melting or charring of any part of the surface · snags, punctures, tears or cuts · "broken or worn stitches" · distortion of fittings — (e) | The same list — (i)(9) |
| Natural and synthetic fiber rope | Abnormal wear, powdered fiber, broken fibers, discoloration, distortion of hardware — (d) | Parallel criteria in 1910.184 |
| Alloy steel chain | Thorough inspection regime with a retained record; hooks, rings and other attachments must have a rated capacity at least equal to the chain's — (b)(2), (b)(6) | Periodic inspection regime — (e)(3) |
Handling rules ride along with the condition criteria in construction: slings are not shortened with knots, bolts or makeshift devices ((c)(6)), legs are not kinked ((c)(7)), a sling is not pulled from under a load that is resting on it ((c)(12)), slings are padded or protected from the sharp edges of their loads ((c)(9)), and "shock loading is prohibited" ((c)(11)). Each of those is a citable sentence, not a best practice.
What OSHA does not require
Saying what the text does not contain is half the value of reading it, so, precisely: there is no federal requirement to document the daily sling inspection; no fixed periodic inspection interval for wire rope, synthetic web or fiber rope slings, only the "where service conditions warrant" trigger; no annual third-party sling certification; and no requirement that the competent person hold any credential: both codes say "designated by the employer," and neither defines a course or a card for it. Sling manufacturers and industry consensus practice go further, recommending documented periodic inspections for every sling type on a schedule matched to service, and that is sound advice. It is also the employer's choice, not a citation waiting to happen, and a program that mistakes vendor recommendations for CFR text ends up defending requirements it never owed.
The record that outlives the tag
A sling's tag wears off; the record that proves its inspections should not go with it. HazComFast keeps an asset register where each piece of gear carries its own identifier, and every inspection is logged against that asset with date and signature, timestamped server-side, so the history stays attached when the sticker or tag gets replaced. When someone asks who inspected the bridle and when, the answer is an entry, not a memory.
Sling inspections in construction and general industry, side by side
| Question | Answer |
|---|---|
| Inspection frequency, construction | All rigging: prior to use each shift, and during use as necessary — 1926.251(a)(1). Each sling: each day before use, by a designated competent person — (a)(6) |
| Inspection frequency, general industry | Each day before use, by a designated competent person — 1910.184(d) |
| Written record of the daily check | Not required by the federal text; prudent anyway |
| The one required record | Most recent thorough inspection of each alloy steel chain sling, retained and examinable — 1926.251(b)(6)(ii) / 1910.184(e)(3)(ii) |
| Thorough-inspection clock | Set by service, never longer than 12 months — (b)(6)(i) / (e)(3) |
| Missing or illegible tag | The sling fails the identification requirement — 1926.251(a)(2)(i), (b)(1) |
| Wire rope removal | Construction: >10% visible broken wires in 8 diameters — (c)(4)(iv). General industry: 10 per lay or 5 per strand per lay — (f)(5) |
| Defective sling | Immediately removed from service — 1926.251(a)(6); any defective rigging equipment, (a)(1) |
Related reading
- The standard itself: 1926.251 rigging equipment guide
- The crane side: Crane and rigging safety under Subpart CC · Crane operator certification, 1926.1427
- The classification question next to this one: Is a scissor lift an aerial lift?
- The paperwork side: Equipment lifecycle and inspection tracking
Sources and verification (verified 2026-08-27): 29 CFR 1926.251(a)(1)-(2), (a)(6), (b)(1), (b)(2), (b)(6), (c)(3)-(c)(16), (d), (e) and 1910.184(a), (c)(14), (d), (e)(3), (f)(5), (i)(9), quoted from the current regulation and re-verified on August 27, 2026 against the CFR text on govinfo; OSHA "Guidance on Safe Sling Use" pages for wire rope and synthetic web slings. General guidance, not legal advice; State-Plan states may impose additional requirements, and manufacturers' instructions may be stricter than the federal text.
Frequently Asked Questions
How often does OSHA require slings to be inspected?
On construction sites, 29 CFR 1926.251(a)(1) requires rigging equipment for material handling to be inspected prior to use on each shift and as necessary during its use to ensure that it is safe. For the sling itself, 1926.251(a)(6) adds a second clock on construction sites: each day before being used, the sling and all fastenings and attachments are inspected for damage or defects by a competent person designated by the employer, with additional inspections during use where service conditions warrant. General industry says the same thing, word for word, at 1910.184(d). Alloy steel chain slings get a further thorough inspection on a regular basis, at intervals no greater than every 12 months.
Who is allowed to inspect a sling?
Both codes name the inspector, in the same words: the daily sling inspection is performed by a competent person designated by the employer, under 1926.251(a)(6) in construction and 1910.184(d) in general industry. Neither text attaches a course, a card or a credential to that person; the employer designates, and the designation belongs in writing, because who checked the gear that morning is among the first questions a compliance officer asks. The broader each-shift check of all rigging equipment under 1926.251(a)(1) names no performer, so your rigging program has to say who does it.
Do daily sling inspections have to be written down?
The federal text does not require a record of the daily pre-use inspection. It requires exactly one sling record: for alloy steel chain slings, the employer shall make and maintain a record of the most recent month in which each alloy steel chain sling was thoroughly inspected, and shall make such record available for examination. That sentence appears word for word in both 1926.251(b)(6)(ii) and 1910.184(e)(3)(ii). Documenting the daily check anyway is how you prove it happened, but the obligation to retain a record attaches to the chain sling's thorough inspection.
When must a wire rope sling be removed from service?
The number depends on which code covers you. In construction, 1926.251(c)(4)(iv) prohibits using wire rope if, in any length of eight diameters, the total number of visible broken wires exceeds 10 percent of the total number of wires, or if the rope shows other signs of excessive wear, corrosion, or defect. In general industry, 1910.184(f)(5) requires immediate removal for ten randomly distributed broken wires in one rope lay, or five broken wires in one strand in one rope lay, along with wear, kinking, crushing, heat damage, corrosion and end-attachment defects.
Can you use a sling whose identification tag is missing?
No, in either code. In construction, 1926.251(a)(2)(i) limits employers to slings that have permanently affixed and legible identification markings as prescribed by the manufacturer, indicating the recommended safe working load, and welded alloy steel chain slings must carry permanently affixed durable identification stating size, grade, rated capacity, and sling manufacturer under 1926.251(b)(1). General industry says it just as flatly: employers must not use slings without affixed and legible identification markings, 1910.184(c)(14). A sling with no tag gives you no rated capacity to rig against, and using it violates the identification requirement itself.
Does OSHA require annual sling certification?
Not in those words. The federal text sets a 12-month outer limit on the thorough inspection of alloy steel chain slings and requires a retained record of it. It does not create a certification program, a third-party requirement, or a fixed periodic inspection interval for wire rope, synthetic web or fiber rope slings. Sling manufacturers and industry consensus practice recommend documented periodic inspections for every sling type, which is good practice the CFR text does not mandate.
What takes a synthetic web sling out of service?
Both codes list the same conditions: acid or caustic burns, melting or charring of any part of the sling surface, snags, punctures, tears or cuts, broken or worn stitches, and distortion of fittings — 1926.251(e) for construction and 1910.184(i)(9) for general industry. Web slings fail visibly, which is exactly why the before-use look matters.
Which rule applies to my crew, 1926.251 or 1910.184?
Construction work falls under 1926.251, which covers rigging equipment for material handling. General industry work, such as a fabrication shop, plant or warehouse, falls under 1910.184, which applies to slings used in conjunction with other material handling equipment for the movement of material by hoisting. The daily-inspection duty, the tag rules and the chain-sling record are materially parallel; the wire rope removal numbers are where the two texts differ most.
OSHA figures and citations here come from our regulatory source-of-truth modules, last checked against the eCFR, OSHA.gov, and the Federal Register on October 5, 2026. Last reviewed August 27, 2026.
About This Article
Published by: HazComFast
Published: August 27, 2026
Last Updated: August 27, 2026
This content is for informational purposes only and does not constitute legal advice.