About CBM

Condition Based Maintenance (CBM) is a maintenance philosophy used by Industry to actively manage the health condition of assets in order to perform maintenance only when it is needed and at the most opportune times. CBM can drastically reduce operating costs and increase the safety of assets requiring maintenance.

Corrective / Reactive maintenance can have severe performance costs and Preventive/ Scheduled maintenance replaces parts before the end of their useful life. CBM optimizes the tradeoff between maintenance costs and performance costs by increasing availability and reliability while eliminating unnecessary maintenance activities.

Indian Institute for Production Management (IIPM) develops and implements technologies that enable CBM, including data acquisition systems, management and tracking software and condition monitoring algorithms.

CBM Components

CBM components are an optimized mix of

  • Maintenance technologies (diagnostics, prognostics)

  • Reliability centered maintenance (RCM) based processes

  • Enablers (Total asset Visibility)

CBM Features

1. Data acquisition may involve various types of information

  • Vibration

  • Temperature

  • Pressure

  • Speed

  • Voltage /Current

  • Stress / Strain/ Shock

  • Position

  • Particulates Count

2. Feature extraction calculations may involve

  • Fast Fourier Transform

  • Data filtering/ smoothing

  • Temperature / pressure ratio

  • Efficiency-Mass flow

3. Detection algorithms alert users to potential problems and otherwise unknown failures.

4. Diagnostic algorithms isolate failures to specific components or subsystems.

5. Prognostic algorithms estimate remaining useful life based on past and future operational profiles and physics of failure models.

6. Supervisory reasoning algorithms reconcile conflicting information and provide recommendations such as Inspections, Repairs, Parts Ordering, and Equipment Shut down.

CBM Implementation Vision

  • Re-Define Equipment/ Systems criticality in a holistic manner.

  • Improve Knowledge, develop Skill-build up resources, evolve own condition monitoring system as a gradual process.

  • Re-cast your existing maintenance plan, centering on MTBF –MTTR – FAILURE ANALYSIS-EFFECTIVE SOLUTION.

  • Transit from Breakdown Maintenance, Minimize Scheduled Preventive Maintenance mode –Graduate to Condition Based Maintenance Mode.

  • Find out ways for Horizontal deployment for your dept. plant as a whole.

CBM Benefits

  • Increases system availability

  • Increases system reliability

  • Reduces Maintenance Costs and Efforts

  • Reduces Inventories

  • Detects Failures much in advance

  • Ensures Quality and Safety

  • Assess Imperfections and Improves System

  • Assess Residual Life of Machines