Mining machinery failure is almost an everyday occurrence. Usually the failures bare certain consequences, which require additional financial costs to repair and restore the system to its operational state. The consequences are viewed through negative and damaging effects a failure has on the machine, health and safety of the employees, work environment, and on the environment. The removal of the consequences of the failure requires additional financial investment, which has a negative impact on the company’s business. In order to prevent this, it is necessary to have Risk Centered Maintenance, where the risk assessment would include all the negative consequences of the risky event. The fuzzy expert assessment is presented in this paper, as well as the failure severity assessment based on the harmful effects of the failure. The negative effects of the machine component failure, such as the time needed for the repair, the possibility of workplace injury caused by the failure, and the impact it has on the environment, are analyzed in this paper as well. This approach to the severity of failure assessment enables a more comprehensive view of this risk indicator. It also enables the risk indicator “severity of failure” to gain greater significance in combination with other risk indicators. The developed model was presented on the example of typical failures of the hydraulic subsystems of a mobile crushing machine Lokotrack LT 1213S.

采矿机械故障几乎每天都会发生。故障通常会带来一定的后果，这需要额外的财务成本才能将系统修复和恢复到正常运行状态。可以通过故障对机器，员工的健康和安全，工作环境以及对环境的负面影响和破坏性影响来查看后果。消除故障后果需要额外的财务投资，这会对公司的业务产生负面影响。为了防止这种情况，有必要进行以风险为中心的维护，其中风险评估将包括风险事件的所有负面后果。本文提出了模糊专家评估，以及基于失效的有害影响的失效严重性评估。本文还分析了机器部件故障的负面影响，例如维修所需的时间，故障导致工作场所受伤的可能性以及对环境的影响。这种对故障严重性进行评估的方法可以更全面地查看此风险指标。它还可以使风险指标“失败的严重程度”与其他风险指标一起获得更大的意义。在移动式破碎机Lokotrack LT 1213S的液压子系统典型故障的示例中介绍了开发的模型。这种对故障严重性进行评估的方法可以更全面地查看此风险指标。它还可以使风险指标“失败的严重程度”与其他风险指标一起获得更大的意义。以移动式破碎机Lokotrack LT 1213S的液压子系统典型故障为例介绍了开发的模型。这种对故障严重性进行评估的方法可以更全面地查看此风险指标。它还可以使风险指标“失败的严重程度”与其他风险指标一起获得更大的意义。以移动式破碎机Lokotrack LT 1213S的液压子系统典型故障为例介绍了开发的模型。