Risk assessment during operating self-propelled lifting jib cranes in conditions of insufficient information
Journal: Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta (Vol.3, No. 2)Publication Date: 2017-06-25
Authors : Lagerev A.V. Konchits S.V. Bleyshmidt L.I.;
Page : 203-220
Keywords : safety; self-propelled lifting jib crane; defect; expert evaluation; risk analysis; diagnostics;
Abstract
Presents the results of statistical analyses identified by the expert diagnostics of defects of the self-propelled lifting jib cranes, spent a normative term of exploitation. The greatest number of defects associated with the destruction and deterioration of structural elements, the occurrence of fatigue cracks and a violation of the conditions of operation of the equipment. The greatest number of defects occurs in the hydraulic system of cranes, the rope-block system, and rarely in steel structures. To conduct risk analysis of self-propelled jib cranes in case of insufficient information, proposed the method of expert estimations. It allows to assess the impact of potential defects on self-propelled jib cranes on the value of the economic damage of the crane and moving cargo and the value of the traumatic exposure on men. The proposed list of possible defects self-propelled lifting jib cranes and a checklist of questions about the degree of influence of these defects. Proposed calculated dependences to the approximate calculation of the magnitude of technical risk in the operation of self-propelled jib cranes. The results of statistical analysis of expert estimations for each possible defect and performed their ranking in terms of impact on the magnitude of the economic damage of the crane and moving loads, the value of the traumatic exposure. Was calculated the value of technical risk for the surveyed taps.
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