Inspection of Slings
Inspection Frequency per 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 most recent periodic inspection shall be maintained.
Rejection Criteria per 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
Chain Slings
- Cracks or breaks
- Excessive wear, nicks or gouges
- Stretched chain links or components
- Bent, twisted or deformed chain links or components
- Excessive pitting or corrosion
- Lack of ability of chain or components to hinge freely
- Weld splatter
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
Roundslings
- 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 any core yarns
- Discoloration and brittle or stiff areas on any part of the slings, which may mean chemical or other damage