Coordinated Companies
AS 9100 Aerospace

Inspection of Wire Rope Slings

Removal Criteria

  • Missing or illegible sling identification
  • Excessive broken wires
  • Severe localized abrasion or scraping
  • Kinking, crushing, bird caging or any other damage resulting in damage to rope structure
  • Evidence of heat damage
  • End attachments that are cracked, deformed or worn
  • Severe corrosion of the rope, end attachments, or fittings
  • Other conditions, including visible damage, that cause doubt as to the continued use

ASME B30.9 outlines the inspection of wire rope slings:

  1. Initial inspection: Prior to use, all new, altered, modified, or repaired slings shall be inspected by a designated person. Written records are not required.
  2. Frequent inspection: A visual inspection for damage shall be performed by the user or other designated person each day or shift the sling is used. Any condition that may result in a hazard shall cause the rigging hardware to be removed from service. Written records not required.
  3. Periodic inspection: A complete inspection for damage to the sling shall be periodically performed by a designated person. Inspection shall be performed on the entire length including splices, end attachments, and fittings. The sling shall be examined and a determination made as to whether they constitute a hazard. Written records of periodic inspection intervals shall not exceed one year. The frequency of periodic inspections should be based on:
    1. Frequency of sling use
    2. Severity of service
    3. Nature of lifts being made
    4. Experience gained

Broken Wires Removal Criteria:

Strand laid and single part slings – 10 randomly broken wires in one lay or 5 wires in one strand in one rope lay is cause for removal.

6 part braid – 20 per braid length – 8 part braid – 40 per braid length