We’ve developed an inspection program based on the procedure outlined in ANSI B30.9 that will make the most of your investment. It’s based on four sound beliefs:
The importance of following regular and uniform inspections.
A respect for the capabilities and limitations of synthetic web slings.
The need to keep complete, permanent records.
Perhaps most importantly, a lot of common sense.
To ensure long life and continued strength of chain, it is important that the product is properly used, inspected and maintained. This section provides details on chain and chain sling inspection methods as well as the proper use and care of chain or slings. Following these guidelines will ensure safe and long use of products. In addition to what is provided in this section, ASME and OSHA have specific regulations related to chain and chain sling use. For detailed information, refer to ASME B30.9 and OSHA 1910.184
Wire Rope Slings
Conditions such as the following should be sufficient reason for consideration of sling replacement:
For strand laid and single part slings, ten (10) randomly distributed broken wires in one rope lay, or five (5) broken wires in one strand in one rope lay.
For cable laid and braided slings of less than 8 parts, twenty (20) randomly distributed broken wires in one lay or braid, or on (1) broken strand per sling.
For braided slings of 8 parts or more, forty (40) randomly distributed broken wires in one braid, or two (2) broken strands per sling.
Severe localized abrasion or scraping.
Kinking, crushing, birdcaging or any other damage resulting in distortion of the wire rope structure.
Evidence of heat damage or if a wire rope sling having a fiber core is exposed to temperatures in excess of 200° F. or if a wire rope sling having a steel core is used at temperatures above 400° F or below minus 60° F.
End attachments that are cracked, deformed, or worn.
Deformation—any visibly apparent bend or twist from the plane of the unbent hook. Throat opening—any distortion causing an increase in throat opening of 5% not to exceed 1/4in. (6mm) (or as recommended by the manufacturer)