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RR1056 Critical analysis of safety related design of powered gates

The original aim of this project was to perform a theoretical assessment into safety measures that may reduce the risks associated with mechanical hazards of powered gates. In order to simplify the analysis, it was agreed that it should be based on specific (albeit theoretical) gate designs - one sliding and one hinged. These were intended to be representative of real-life designs, using typical drives, control systems and safety measures.

A critical analysis of the designs presented in this report highlights several safety-related inadequacies, which are discussed in detail. In particular, the use of typical drive system control functions to limit crushing forces is shown to be inadequate. Alternative safety measures are suggested to address these inadequacies. Alternative means of risk reduction are discussed; pressure sensitive edges are presented as an effective means of delivering force limitation.

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Updated 2015-07-10