Safety Study on Load-Limiting Device for Rope Rescue

Autor: Steven Chiang, Chin-Feng Chen, Hue-Pei Chang, Wan Ki Chow, Wei-Chih Fang, San-Ping Ho
Rok vydání: 2020
Předmět:
Zdroj: The Proceedings of 11th Asia-Oceania Symposium on Fire Science and Technology ISBN: 9789813291386
Popis: This paper provides tests on Tandem Prusik, and two mechanical devices as load-limiting device. The test results on a 3-wrap Prusik demonstrated that it would eventually break when overloaded, which contradicts to popular traditional belief that it will not continuously hold and substantially slip on rope if overloaded. The same tests conducted on mechanical devices show results of a positive maximum static slip of about 600 kgf, above which the rope will substantially slip to maintain the tension force even with further pulling above this limit. This novel finding is critical as it provides sound indication that the device would automatically make adjustments for the tension to be kept safe in the safe zone in field operations.
Databáze: OpenAIRE