November 2021

Maintenance and Reliability

Calculate the MTBR of pumps in an oil refinery

Mean time between repairs (MTBR) is an index for judging the performance of a specific piece of equipment.

Zardynezhad, S., TurboTech Consulting Corp.

Mean time between repairs (MTBR) is an index for judging the performance of a specific piece of equipment. In other words, it is a measure of reliability—how long an asset typically works until it fails. It helps reliability engineers and managers make data-driven decisions on maintenance scheduling, safety, budgeting, inventory management and equipment design without relying on subjective observations. MTBR is best used for discerning whether an operating scenario is improving or worsening. This article addresses how to calculate the MTBR of pumps in an oil refinery based on the author’s experience. Definition of pump The first step in calculating MTBR is to define what is included (and

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