20. มีเชือกลวดสลิงงดการใช้งานทันทีหากมีเงื่อนไขใด ๆ ต่อไปนี้ที่มีอยู่ [29 CFR 1910.184(f)(5) and 1926.251(c)(4)(iv)]
a. Ten randomly distributed broken wires in one rope lay, or five broken wires in one strand in one rope lay
b. Wear or scraping of one-third the original diameter of outside individual wires
c. Kinking, crushing, bird caging, or other damage resulting in distortion of the wire rope structure
d. Evidence of heat damage
e. End attachments that are cracked, deformed, or worn
f. Hooks that have been opened more than 15 percent of the normal throat opening (measured at the narrowest point), or hooks twisted more than 10 degrees from the plane of the unbent hook
g. Corrosion of the rope or end attachments
21. Are protruding ends of strands in splices covered or blunted
[29 CFR 1926.251(c)(2)]