Assessment of the journal bearing health status in a drum mill used as a part of arctic complex mining equipment

The paper presents the materials for maintenance of the specified availability level of the mining disintegration equipment operated as a part of a floating mining complex used within the framework of an innovative geotechnology for the development of the Pavlovskoye deposit on the Yuzhny Island of Novaya Zemlya archipelago. The approach to manage maintenance and repair of the drum mills of the floating complex is based on the combined hierarchical system dependent on assessing the risk level of possible failures according to the adapted Fine and Kinney method with forecasting of the residual life of the journal bearing through estimating their thermal fields according to the Shewhart individuals control charts in the course of real-time monitoring. This approach allows predicting the preventive maintenance periods for the drum mill bearings immediately when the mining equipment is standing still with the use of attachable machine modules