Assessing occupational risk for contact with moving parts of machines during maintenance
In this paper a methodology for managing occupational risk owing to contact with moving parts while maintaining machines is presented. The methodology is based on the principles of quantified risk assessment. A probabilistic model has been developed to assess the risk from contact with moving parts of machines while maintaining them as a function of working conditions and time exposure. 62 other models have been developed to cover different hazards in all working activities. They have been developed under the Workgroup Occupational Risk Model (WORM - Metamorphosis) project, financed by the Dutch government. These models allow the delineation of accidents into sequences of events describing measures (technical and/or procedural) in place to prevent them or to mitigate their consequences. Identification of these sequences enables the identification of specific root causes of such accidents and hence the determination of specific and practical actions that can influence the probability of an accident. Quantification of these models provides, furthermore, a way for assessing the relative value of such measures and hence a basis for supporting decisions aiming at reducing the consequences of accidents in the work fields. Qualitative information on the safety functions, measures and barriers the failure of which constitute the causes of accidents have been derived from the analysis of actual accidents occurred and reported under the Dutch law over a period of years. The information contained in the accident reports, required by Dutch law and composed by investigating labor inspectors, has been systematically analyzed. The results of this analysis provide a Bowtie-like visual aid of the various events that contribute to the accident. This information is then used to develop the logical models describing the logic interconnection of the various events corresponding to technical and/or procedural safety related measures and is amenable to quantification according to the laws of probability theory. The relative importance of each measure to risk reduction is depicted with the aid of sensitivity calculations. Optimization, thus minimization of risk with specific initial conditions and constraints is achieved through alterations in the working conditions.
KeywordsInjury Risk Occupational Risk Danger Zone Occupational Accident Accident Data
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- 1.OSHA (2007) Safeguarding Equipment and Protecting Employees from Amputations, Small Business Safety and Health Management Series, OSHA 3170-02R.Google Scholar
- 2.EC (1998) Directive 98/37/EC of the European Parliament and of the Council of 22 June 1998 on the approximation of the laws of the Member States relating to machinery, Official Journal of the European Communities, Luxembourg.Google Scholar
- 3.EC (2006) Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast), Official Journal of the European Communities, Luxembourg.Google Scholar
- 4.EEC (1989) Council Directive 89/392/EEC of 14 June 1989 on the approximation of the laws of the Member States relating to machinery, Official Journal of the European Communities, Luxembourg.Google Scholar
- 5.GISAI (2005) Geintegreerd Informatie Systeem Arbeids Inspectie: Integrated Information System of the Labor Inspection in the Netherlands.Google Scholar
- 7.Baksteen H., Mud M., Papazoglou I.A., Aneziris O. N., Ale B.J.M, Bellamy L.J., Hale A.R., Bloemhoff A., Post J. , Oh J. (2006) Quantified risk assessment for contact with a moving part of a machine. Working on Safety Conference 2006, Dutch Ministry of Social Affairs and Employment and the Delft University of Technology, Netherlands.Google Scholar
- 10.Papazoglou I.A., Aneziris O. N., Konstandinidou M., Mud M., Damen M., Kuiper J., Bloemhoff A., Backsteen H., Bellamy L.J., Post J.G., Oh J. (2008) Occupational Risk Management for Vapour/Gas Explosions, In S. Martorell, C. Guedes Soares & J. Barnett (Eds) ESREL 2008 Safety, Reliability and Risk Analysis: Theory, Methods and Applications. Valencia. 777-785, London: Taylor & Francis Group.Google Scholar
- 11.Aneziris O. N., Papazoglou I.A., Konstandinidou M., Mud M., Damen M., Kuiper J., Backsteen H., Bellamy L.J., Oh J. (2009) Occupational Risk Management for Electricity Accidents, Submitted for publication in ESREL 2009.Google Scholar
- 12.Papazoglou I.A, Bellamy L.J., Leidelmeijer K.C.M., Damen M., Bloemhoff A., Kuiper J., Ale BJ.M., Oh J.I.H. (2008) Quantification of Occupational Risk from Accidents, Proceedings of PSAM 9.Google Scholar
- 15.RIVM (2008) WORM Metamorphosis Consortium. The Quantification of Occupational Risk. The development of a risk assessment model and software. RIVM Report 620801001/2007 The Hague.Google Scholar
- 16.Baksteen H., Mud M., I.A. Papazoglou, O. N. Aneziris, Konstandinidou M., Schepers W. (2008) Technical report on Bowtie: Contact with moving part of a machine, RIVM.Google Scholar