CBM - Condition Based Monitoring.
It primarily monitors the state of affairs and, in response to detected deviations,
initiates maintenance procedures.
It uses sensor data collected in real time to evaluate the state of the machinery.
CBM maintenance is a technique where equipment is monitored in real time to indicate failures. CBM strategies overlap with predictive maintenance.
Tracking asset performance is what predictive maintenance does. However, CBM relies on continuous asset monitoring to trigger maintenance actions rather than keeping a fixed schedule. The goal here is to check asset performance continuously to do maintenance as and when the equipment performance drops below a certain level. This prevents breakdowns and saves costs.
CBM strategies use condition-based maintenance tools like sensors that monitor the real-time performance data of the asset. Data such as temperature, humidity level, pressure, vibration, etc. are impending causes of asset failure that sensors can detect in case of a decrease in performance. Condition-based monitoring uses different techniques which differ based on asset and production level.
➢ Elimination of unplanned failures.
➢ Reduced maintenance costs.
➢ Increased asset life.
➢ Reduction in collateral asset damages.
➢ Enables better asset management across its life span.
➢ Provides the basis for formulating predictive algorithms for the future.
➢ Vibration analysis is one of the most commonly used maintenance methods which utilizes vibration sensors. It can detect misalignment, wear, and imbalances 3 months prior they can cause a breakdown
Oil analysis
➢ Oil is a critical component in any equipment and thus it is reasonable to analyze the oil to get insights about the asset's performance. It can detect wear, overheating, and contamination. More iron content often means dirt and grit, which, if spotted on time, reduces the gearbox failures by 50%.
Infrared thermography
➢ This condition-based monitoring uses a thermal camera that simply detects temperature variations produced by equipment for analysis. The maintenance team usually keeps ideal temperature levels set for all critical assets, which can be compared with the current analysis. If the temperature exceeds the optimum level, the maintenance team will be alerted for a potential threat.
Ultrasound testing
➢ Ultrasound testing focuses on detecting high-frequency sounds emitted by equipment during operation. This technique is particularly effective for identifying issues such as leaks, electrical problems, or bearing defects.
Electrical monitoring
➢ Equipment can pull varied amounts of electricity throughout its life span and performance. Faults in machinery can also be prevented by conducting a thorough electrical analysis which not only avoids breakdowns but enhances safety as well.
Pressure monitoring
➢ Some assets need to have gas, air, or fluid flowing throughout the system. Poor pressure would mean loss of performance and too much pressure can be life-threatening to employees.
Radiation analysis
➢ Similar to how an X-ray is performed, radiation analysis thoroughly checks an asset from the inside out. It is one of the most thorough methods of non-destructive testing. This method looks at how much radiation is being consumed by the component being tested.