Effects of weld damage on the dynamics of energy absorbing lanyards.

Effects of weld damage on the dynamics of energy absorbing lanyards. Int J Occup Saf Ergon. 2017 Jan 26;:1-24 Authors: Katona DN, Bennett CR, McKoryk M, Brisson AL, Sparrey CJ Abstract Manufacturers recommend removing fall protection system components from service for any indication of weld spatter or tool damage; however, little is known about the specific effects of lanyard damage on fall arrest dynamics. Thirty-two energy absorbing lanyards were drop tested after being damaged with weld spatter, plasma torches and cutting tools and compared with new, undamaged lanyards. Two lanyards damaged with a plasma torch failed completely without deploying the energy absorber while weld spatter damage and tool cuts, up to 2/3 through the width of the webbing, had no effect on fall arrest dynamics. The results highlight the catastrophic implications of high temperature damage to lanyard webbing resulting from plasma torches - which require immediate removal from service. In addition, the integrated energy absorber design in bungee style lanyards makes them more susceptible to damage anywhere along its length. We therefore recommended against bungee lanyards for ironworkers and welders. PMID: 28125382 [PubMed - as supplied by publisher]
Source: International Journal of Occupational Safety and Ergonomics - Category: Occupational Health Tags: Int J Occup Saf Ergon Source Type: research