We reach most sites in 24 to 72 hours.
Why the Gear Below the Hook Decides Whether the Lift Is Safe
It hangs from a sling, a shackle, a hook, or a spreader bar, and the moment any one of those pieces lets go, the rated capacity of the machine above it stops mattering. Rigging and below-the-hook gear is where a surprising share of dropped-load incidents actually start, because it is the equipment that gets dragged across yards, left in the weather, mixed between crews, and pressed back into service without anyone formally checking whether it is still rated for what it is about to pick up.
3P Safety Inspections inspects that gear as its own discipline. Slings, shackles, hooks, eye bolts, turnbuckles, spreader bars, lifting beams, and anything else that rides between the hook and the load gets evaluated against the standards written for it, then documented in a written report a crew can act on. The company is an independent third party.
It does not sell, rent, or repair rigging, slings, shackles, or parts, so when an inspector pulls a sling out of service, that finding exists to keep the load in the air and nothing else.
The Standards That Actually Govern Rigging Hardware
Most people associate crane inspection with the machine, but rigging lives under its own family of ASME B30 volumes, and each piece of gear answers to a specific one. ASME B30.9 covers slings, both wire-rope and synthetic, including the inspection criteria and the rated-load markings every sling is supposed to carry. ASME B30.10 covers hooks, where throat opening, twist, and wear are the governing measurements. ASME B30.26 covers rigging hardware, the shackles, links, turnbuckles, eye bolts, and similar fittings that connect the rest of the assembly together.
ASME B30.20 covers below-the-hook lifting devices, which is the bracket the spreader bars, lifting beams, and engineered lifting frames fall under.
Those four volumes matter because the criteria differ from one to the next. A wire-rope sling has different removal thresholds than an alloy chain sling. A shackle is condemned for reasons that have nothing to do with why a hook gets condemned. A lifting beam is evaluated as an engineered device with its own rated capacity and identification, not as a piece of off-the-shelf hardware. An inspection that treats all rigging as one undifferentiated category misses the point of having separate standards.
3P Safety Inspections grades each item against the volume written for it, and ties every finding back to the exact clause it came from.
These volumes also do not exist in isolation from the rest of the lift. The same gear that B30.9, B30.10, B30.20, and B30.26 govern is the gear hanging off a mobile crane covered by B30.5, a tower crane covered by B30.3, an overhead or gantry crane covered by B30.2, or a derrick covered by B30.6. When the rigging is part of a hoisting system, it inherits the inspection discipline of the machine it serves alongside the criteria of its own volume.
An inspector who knows where rigging sits in that larger B30 structure reads each sling and fitting as part of a load path rather than as a loose part in a bin, and that is the difference between condemning a worn shackle and understanding why it wore the way it did.
How OSHA’s Inspection Cycle Reaches the Rigging
Rigging does not get a free pass on inspection frequency just because it is small. Under OSHA’s construction crane rules, a competent person performs a pre-shift inspection before each shift, and that walk-through includes the rigging the crew is about to use [1926.1412(d)]. Slings and hardware also fall within the monthly documented inspection by a competent person, which has to be signed, dated, and retained for at least three months [1926.1412(e)].
Beyond that, gear that is part of the crane’s load-handling system is captured in the annual full inspection performed by a qualified person at least every twelve months, with a written report kept on file for at least a year [1926.1412(f)]. Anytime a sling or fitting is overloaded, damaged, or pulled from service and repaired, it earns a fresh look before it goes back to work.
Where the rigging hangs from an overhead or gantry crane rather than a mobile machine, the cycle takes a different shape under OSHA 1910.179. There the inspections split into “frequent” examinations running daily to monthly by a competent person and “periodic” examinations every one to twelve months by a qualified person, with the interval driven by the service class of the equipment [1910.179(j)].
A piece of below-the-hook gear that rides an overhead bridge crane all day in a busy shop sits at a different frequency than a spreader bar pulled out a few times a year, and the inspection schedule is supposed to reflect that duty. 3P Safety Inspections reads the rigging in the context of how the equipment is actually classified and used, not on a single one-size interval.
The distinction between roles is not a formality. A competent person is someone able to identify existing and predictable hazards and authorized to take prompt corrective action. A qualified person holds the recognized credentials and experience to perform the periodic and annual evaluations (29 CFR 1926.32(f) and (m)).
For everyday slings and shackles, that means the crew’s competent person catches the obvious damage before the shift, while the harder calls — measuring diameter loss across a sling’s length, judging cumulative wear on a hook, deciding whether a lifting beam’s deformation is structural — belong with a qualified inspector. 3P Safety Inspections supplies inspectors who meet that qualified-person bar, so the annual and periodic determinations carry the weight they are supposed to.
What an Inspector Actually Looks At, Piece by Piece
A rigging inspection is a physical, hands-on examination of every component, not a glance and a signature. The work moves through the gear methodically.
- Wire-rope slings. The inspector reads the rope full length for broken wires, applying the removal criteria for running rope — six randomly distributed broken wires in one rope lay, or three broken wires in one strand in one lay — along with broken wires at the end connections, measurable diameter loss, kinking, crushing, birdcaging, corrosion, and any sign of heat damage. The end fittings, thimbles, and splices get the same scrutiny as the body of the rope.
- Synthetic slings. Web and round slings are checked for cuts, abrasion, snags, broken or worn stitching, crushed or melted fibers, chemical or heat damage, and the condition of the wear pads and fittings. A missing or illegible capacity tag is itself a removal-from-service condition.
- Chains, hooks, and shackles. Alloy chain slings are read link by link for stretch, gouges, nicks, and wear. Hooks are measured for throat opening, checked for twist out of plane, and gauged for wear at the saddle and tip, with self-closing latches verified where fitted. Shackles are confirmed to be the correct type, with the proper pin, no thread damage, no spreading of the ears, and no signs of having been overloaded.
- Eye bolts and turnbuckles. Threads, shanks, and shoulders are examined for bending, wear, and elongation, and the inspector confirms that the rating still applies for the angle the gear is actually loaded at — a shoulder eye bolt loaded on an angle has a drastically reduced capacity that only matters if someone checks it.
- Spreader bars and lifting beams. As below-the-hook devices, these are inspected as engineered equipment: structure, welds, pins, and connections are examined for cracks and deformation, lifting lugs and pad eyes are checked, and the rated capacity, identification, and weight markings required of below-the-hook devices are confirmed to be present and legible.
The reeving and connection points that join these pieces to the crane carry their own scrutiny, because a rigging assembly fails at its weakest junction. Load blocks, sheaves, and the way the rope is reeved through them are read for wear and damage where the gear ties into the hoisting system, and the structural members, welds, pins, and connections of any engineered device are examined as a load path rather than as separate parts.
A sling can pass on its own and still be unsafe if it is choked over a sharp edge, rigged at an angle the hardware is not rated for, or paired with a shackle a size too small, so the inspector reads how the gear is assembled, not just whether each item is individually sound.
Identification, Tags, and the Crane Log
Under the B30 volumes, a piece of rigging that cannot be positively identified with its rated load cannot be returned to service, no matter how good the steel looks. Identification is not paperwork bolted on after the fact. It is part of whether the gear is legal to lift with at all.
The inspector reads tags, capacity plates, and the wear marks on every item, confirming that a sling still carries a legible rated-load marking, that a below-the-hook device still shows its rated capacity, identification, and weight, and that a shackle or hook is the size and grade it is being used as. A bright, undamaged sling with an illegible or missing tag comes out of service for that reason alone, and the report says so against the exact clause that requires it.
That same discipline runs into the records the equipment carries. Load charts and capacity plates are confirmed present and legible where rigging ties into a crane, and the inspection itself becomes part of the crane log and the documented monthly and annual record an OSHA reviewer expects to find. A rigging program is only as defensible as its trail of signed, dated reports, and 3P Safety Inspections builds that trail so the gear’s history is as readable as its current condition.
When the Eye Is Not Enough: NDT and Proof Loading
Some defects do not show on the surface. A fatigue crack starting at the root of a weld on a lifting beam, or a subsurface flaw in a forged hook or a load-bearing pin, can stay invisible to a visual inspection right up until it propagates under load. When the gear and the standard call for it, 3P Safety Inspections brings nondestructive testing into the process. Magnetic-particle inspection reveals cracks at and just under the surface of ferromagnetic welds and fittings.
Dye-penetrant inspection draws out surface-breaking cracks on hooks, shackles, and other components. Ultrasonic testing reaches into thick steel sections and pins where a flaw could never be seen from outside.
For engineered below-the-hook devices and for hardware coming back from major repair or alteration, a rated-capacity proof load may be in order. Proof loads are applied with calibrated weights or load cells, performed after major repair or alteration and on the applicable ASME cycle, so a spreader bar or lifting beam is verified to handle its marked rating rather than assumed to.
The combination of careful visual work, NDT where it is warranted, and load testing where the standard requires it is what separates a real inspection from a clipboard exercise.
How Findings Get Classified and Why It Holds Up
An inspection is only useful if the crew can act on it without guessing what matters most. 3P Safety Inspections sorts every finding by severity. Critical items are out of service immediately — a sling with broken wires past the removal threshold or a hook stretched past its throat-opening limit does not go back on the hook. Major items must be corrected before the next lift. Minor items are corrected on a defined timeline. Monitor items are noted to be watched as they develop.
Every finding is tied to a photograph and to the exact OSHA or ASME rule behind it, so there is no ambiguity about why a piece of gear was tagged or what fixing it requires.
That documentation has to survive scrutiny from people who were not on site. Because 3P Safety Inspections does not sell, rent, or repair rigging, slings, shackles, or parts, the report carries no incentive to condemn good gear or to overlook bad gear in order to sell a replacement. A finding is a finding. That independence is exactly what makes the report hold up in front of an OSHA compliance officer, an insurer, a lender, a general contractor verifying a subcontractor’s equipment, and — on government work — a contracting officer.
Federal Rigging Work and EM 385-1-1
On federal projects for agencies such as USACE, NAVFAC, GSA, VA, and DOE, the rigging answers to more than OSHA and ASME. The Army Corps of Engineers safety manual, EM 385-1-1, layers extra requirements on top through its Section 16 provisions covering lifting and rigging. That means designated persons named in writing, critical-lift plans that account for the rigging configuration, activity hazard analyses that address the gear in use, USACE three-phase control with preparatory and initial-phase reviews, and reporting in the agency’s expected format.
Rigging on these jobs is held to the documentation discipline of federal construction, not just the technical thresholds of the B30 volumes. 3P Safety Inspections is registered to work in that environment (SAM.gov UEI N32TWKB7DD61, CAGE 20QE6) and structures its rigging reports to the format federal reviewers expect.
Coverage, Turnaround, and the People Doing the Work
3P Safety Inspections covers all 50 states. The process is built to move at the speed a job site actually runs. A crew sends its equipment list and site information. A quote comes back within a business day. The company reaches most sites within 24 to 72 hours. An inspector works the gear part by part on site. A photo-documented report follows quickly. And the deficiencies arrive as a punch list sorted by severity, so the crew knows what cannot lift today and what can wait for a timeline.
The inspectors are NCCCO-certified and meet the qualified-person standard the annual and periodic determinations demand. Founder Patrick Salazar has been around cranes and rigging since 2005, working up from operator to lift director to NCCCO-certified crane inspector, and he holds OSHA 500 trainer credentials. That field history is the difference between someone who can recite a removal criterion and someone who has watched gear age in service and knows what a developing failure looks like before it finishes developing.
For crews that also need their riggers and operators trained rather than only their gear inspected, the sister brand 3P Safety Crane Training operates in that space. The inspection work itself stays strictly independent.
Rigging is the cheapest part of the lift and the part most likely to be overlooked, which is precisely why it deserves a dedicated, independent inspection. Crews ready to have their slings, shackles, hooks, and below-the-hook gear evaluated against B30.9, B30.10, B30.20, and B30.26 can send an equipment list and site details to 3P Safety Inspections and have a quote back within a business day.
Frequently Asked Questions
Which ASME standards apply to rigging and below-the-hook gear?
Four B30 volumes govern this equipment. ASME B30.9 covers slings, both wire-rope and synthetic, including their inspection criteria and rated-load markings. ASME B30.10 covers hooks and the throat-opening, twist, and wear measurements used to judge them. ASME B30.26 covers rigging hardware such as shackles, links, turnbuckles, and eye bolts. ASME B30.20 covers below-the-hook lifting devices like spreader bars and lifting beams. When the gear hangs from a specific machine, it also relates to that machine’s volume — B30.5 mobile, B30.3 tower, B30.2 overhead and gantry, B30.6 derricks.
3P Safety Inspections grades each item against the volume written for it and cites the exact clause behind every finding.
How often does rigging gear have to be inspected under OSHA?
It depends on the equipment it serves. On construction cranes, a competent person inspects it pre-shift before each shift [1926.1412(d)]. It falls within the monthly documented inspection that must be signed, dated, and kept at least three months [1926.1412(e)]. And gear in the crane’s load-handling system is part of the annual full inspection by a qualified person, kept on file at least a year [1926.1412(f)].
On overhead and gantry cranes, the cycle runs as ‘frequent’ daily-to-monthly checks by a competent person and ‘periodic’ one-to-twelve-month checks by a qualified person, set by service class [1910.179(j)]. Any overload, damage, or repair triggers a fresh inspection before the gear returns to service.
What conditions take a sling, hook, or shackle out of service?
For running wire rope, removal criteria include six randomly distributed broken wires in one lay or three in one strand in one lay, broken wires at end connections, diameter loss, kinking, crushing, birdcaging, corrosion, or heat damage. Synthetic slings come out for cuts, abrasion, broken stitching, melted or chemically damaged fibers, or a missing capacity tag. Hooks are condemned for excessive throat opening, twist, or wear. Shackles fail for wrong pins, thread damage, spread ears, or overload signs.
And gear that cannot be positively identified with its rating cannot return to service regardless of how good the steel looks, because identification is part of the standard, not an afterthought.
When does rigging need NDT or a proof load instead of a visual check?
Visual inspection catches surface damage, but a fatigue crack at a weld root, or a subsurface flaw in a forged hook or a load-bearing pin, can stay hidden until it fails under load. When the gear and the standard call for it, 3P Safety Inspections uses magnetic-particle inspection on welds and fittings, dye-penetrant on surface-breaking cracks, and ultrasonic testing on thick steel and pins.
For engineered below-the-hook devices and hardware coming back from major repair or alteration, a rated-capacity proof load is applied with calibrated weights or load cells on the applicable ASME cycle, so a spreader bar or lifting beam is verified to handle its marked rating rather than assumed to.
Why use an independent third party instead of the rigging supplier?
3P Safety Inspections does not sell, rent, or repair rigging, slings, shackles, or parts. That means a finding has no sales angle behind it — gear is not condemned to sell a replacement, and bad gear is not waved through to keep a customer happy.
Because the report carries no commercial incentive and ties every finding to a photo and the exact OSHA or ASME rule, it holds up under scrutiny from OSHA compliance officers, insurers, lenders, general contractors verifying a subcontractor’s equipment, and contracting officers on federal work, where EM 385-1-1 Section 16 adds its own documentation discipline on top of OSHA and ASME.
Related: Aerial Lift Inspection, All-Terrain Crane Inspection, service areas, about 3P Safety Inspections.