According to OSHA, which condition will prohibit the use of synthetic web slings?

• A. Acid and caustic vapors
• B. High humidity
• C. Minor surface wear
• D. Dry weather

Answer: (A)

Synthetic web slings are made from fibers like nylon or polyester, which are vulnerable to chemical attack. Acid and caustic vapors can degrade these fibers at a molecular level, weakening the sling and increasing the risk of failure under load. OSHA prohibits using synthetic web slings in environments where those chemicals are present because the weakening may not be visible but can lead to sudden breakage. The other conditions listed do not inherently cause the same chemical degradation, so they aren’t automatic prohibitions—conditions like humidity, minor wear within inspection limits, or dry weather may be acceptable as long as the sling is in good condition and within its rated capacity. Always remove any sling that shows signs of chemical damage or other deformation.