A key factor when inspecting high performance roundslings is being able to identify a potential issue and taking action on it before the sling is connected to any rigging hardware. A small cut, burn, tear or hole in a high performance roundsling can compromise the strength and lifting capabilities of the sling when under load, and therefore the sling must be removed from service immediately. If there is any doubt as to the condition of the roundsling prior to use, it needs to be removed from service and replaced.
The following ASME B30.9 high performance roundsling inspection standards require immediate removal from service for any sling with any of the following visible occurrences:
Missing or illegible sling identification
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
Knots in the roundsling, except for core yarn knots inside the cover installed by the manufacturer during the fabrication process
Fittings that are pitted, corroded, cracked, bent, twisted, gouged, or broken
Discoloration and brittle or stiff areas on any part of the slings, which may indicate chemical or other damage
For hooks, removal criteria as stated in ASME B30.10
For rigging hardware, removal criteria as stated in ASME B30.26
Other conditions, including visible damage, that cause doubt to the continued use of the sling
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