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Published: April 1991 Revised: March 2020 205 Bridgewater Road ? PO Box 2423 ? Aston, PA 19014, USA ? +1(610) 485-8500 Technical Bulletin 2: Fire Performance of Sparkeater® Aramid Roundslings Slingmax Sparkeater roundslings are rated for use in a maximum temperature of 300 °F (150 °C). They are constructed with aramid fiber, giving them enhanced high temperature performance as well as resistance to flame. Aramid fiber is a high-performance fiber more commonly known by the brand names Technora, Kevlar, and Twaron. Aramids do not melt, but instead decompose at a temperature of 842 °F (450 °C) and have a limiting oxygen index of 29 – 37, depending on grade. The fiber can be ignited, but it generally doesn’t support flame and burning stops after the ignition source is removed. To confirm the fire performance, a sample was tested for ignitability by London Scientific Services, a third-party laboratory, and a report was prepared by the Offshore Certification Bureau. The full test report can be found in Appendix A, but an except of the result is below: “The sling sample was tested for Ignitability and it was found that the Aramid based sling, as supplied, was resistant to ignition and fire spread and may therefore be considered compatible with wire or chain sling in respect to fire safety on offshore installations. Contamination with diesel oil has been shown to make the sling easier to ignite but not to enable it to continue to burn” Verification Testing: Additional high temperature testing was performed on a Sparkeater sling in 2008. This round of testing consisted of rigging the sling directly on a piece of heated steel. A Sparkeater sling with a rated vertical capacity of 10,000 lb was rigged over a steel block that was heated to 400° F (204° C). The sling was held at its WLL for 15 minutes, and an inspection was performed on the sling which showed no signs of damage. The steel had cooled to 292° F (144° C), so heat was again applied until it reached 400° F (204° C).