Inspection Frequency (ASME B30.9): A visual inspection for damage shall be performed by the user or designated person each day or shift the sling is used. A complete inspection for damage shall be performed periodically by a designated person, at least annually. Written records of the most recent periodic inspection shall be maintained.
Rejection Criteria (ASME B30.9): Missing or illegible sling identification; evidence of heat damage; slings that are knotted; fittings that are pitted, corroded, cracked, bent, twisted, gouged, or broken; other conditions, including visible damage, that cause doubt as to the continued use of the sling.
Wire Rope Slings
- Excessive broken wires — for strand-laid and single part slings, ten randomly distributed broken wires in one rope lay, or five broken wires in one strand in one rope lay
- Severe localized abrasion or scraping, kinking, crushing, birdcaging
- Any other damage resulting in damage to the rope structure
- Severe corrosion of the rope or end attachments
Web Slings
- Acid or caustic burns
- Melting or charring of any part of the sling
- Holes, tears, cuts or snags
- Broken or worn stitching in load bearing splices
- Excessive abrasive wear
- Discoloration and brittle or stiff areas on any part of the sling, which may mean chemical or ultraviolet/sunlight damage
Round Slings
- Acid or caustic burns
- Evidence of heat damage
- Holes, tears, cuts, abrasive wear or snags that expose the core yarns
- Broken or damaged core yarns
- Weld splatter that exposes core yarns
- Discoloration and brittle or stiff areas on any part of the sling, which may mean chemical or other damage
Inspection Frequency (ASME B30.26): A visual inspection shall be performed by the user or designated person each day before rigging hardware is used. A periodic inspection shall be performed by a designated person, at least annually. The rigging hardware shall be examined and a determination made as to whether conditions constitute a hazard. Written records are not required. Semi-permanent and inaccessible locations where frequent inspections are not feasible shall have periodic inspections performed.
- Missing or illegible manufacturer's name or trademark and/or rated load identification (or size as required)
- A 10% or more reduction of the original dimension
- Bent, twisted, distorted, stretched, elongated, cracked, or broken load bearing components
- Excessive nicks, gouges, pitting and corrosion
- Indications of heat damage including weld spatter or arc strikes, evidence of unauthorized welding
- Loose or missing nuts, bolts, cotter pins, snap rings, or other fasteners and retaining devices
- Unauthorized replacement components or other visible conditions that cause doubt as to the continued use of the sling
Additionally Inspect Wire Rope Clips For:
- Insufficient number of clips
- Incorrect spacing between clips
- Improperly tightened clips
- Indications of damaged wire rope or wire rope slippage
- Improper assembly
Additionally Inspect Wedge Sockets For:
- Indications of damaged wire rope or wire rope slippage
- Improper assembly
Additional Rejection Criteria (ASME B30.10 – Hooks): Any visibly apparent bend or twist from the plane of the unbent hook, or any distortion causing an increase in throat opening of 5%, not to exceed 1/4".