November 2017

Maintenance and Reliability

Redesign, simplify and demonstrate facts

The Petronor oil refinery is located in northeastern Spain. Recently, the facility converted its last rolling element-equipped machine from liquid oil lubrication to pure (“dry-sump”) oil mist.

Vila Forteza, M., Repsol SA

The Petronor oil refinery is located in northeastern Spain. Recently, the facility converted its last rolling element-equipped machine from liquid oil lubrication to pure (“dry-sump”) oil mist. The final conversion involved the dual pillow block bearing arrangement for the 3,000-rpm, 100-kW air blower in the refinery’s sulfur unit. As a point of interest, all other rolling element bearings throughout this refinery had previously been connected to a plantwide oil mist system as part of a reliability improvement project that was carried out by the Repsol Group. FIG. 1. A simplified schematic of the blower’s lubricating system. When the blower was

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