An Improved Risk Assessment Expert System for Elevator in Use
Traditional risk assessment method for elevator in use only focuses on objective factor, but many accidents in elevator are caused by subjective factors. This paper proposed an risk assessment method focusing on all the subjective and objective factors such as the design, manufacture, installation, maintenance, use, inspection elements, an weighted coefficient for considering the influence of different elements to the risk has been obtained by using the statistical experts opinions, then the risk level of the analyzed elevator can be obtained with the expert system, some suggestions are given according to the risk assessment results for improving the safety level of elevator in use. An example is given to illustrate how the proposed system is applied.
KeywordsElevator in use Risk assessment Compulsory inspection Risk level
This work is supported by the science and technology projects of General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China (2011QK321, 2010QK085, 2012QK065, 2010QK080), the projects of Guangdong Administration of Quality Supervision, Inspection and Quarantine (2011CT04, 2010CT04, 2010ZT02).
- 1.General Administration of Quality Supervision, Inspection of the People’s Republic of China. Annual incidents report of special equipment. http://tzsbaqjcj.aqsiq.gov.cn/sgzl (2005–2011)
- 2.IEC 61508: Functional safety (1998)Google Scholar
- 3.ISO 14798:2006: Lifts, escalators and moving walks-risk assessment and reduction methodology (2006)Google Scholar
- 4.Gu, X.-Y., Zhu, C.-M., Zhang, P., et al.: Research of comprehensive safety assessment method for elevator system. China Saf. Sci. J. 18(6), 146–151 (2008)Google Scholar
- 5.Haynl, M.: A look at IEC61508 the standard drives functional safety of machinery in the US and Europe. Mach. Control 12(3), 21–25 (2010)Google Scholar
- 6.Mangalam, S., Foe, R.: Risk informed decision making by a public safety regulatory authority in Canada: a case study involving risk based scheduling of periodic inspections. WM’06 conference (2006)Google Scholar