How EIG Uses VDA to Extend Component Life and Reduce Emergency Shutdown Costs

Unplanned equipment failures can create significant disruption for mining and other asset-intensive operations. Repair costs, specialist labour, replacement components and production interruptions can all affect the consequences of an unexpected failure. For critical equipment, identifying changes in machine condition may give maintenance teams more information when deciding whether further investigation or planned intervention is appropriate.

Vibration Data Analysis (VDA) is one condition-monitoring technique used to assess the condition of rotating machinery. By collecting and analysing vibration measurements, engineers can investigate changes that may be associated with mechanical issues and compare current readings with historical data.

VDA does not eliminate equipment failures or provide a guaranteed prediction of remaining component life. Its value depends on the equipment being monitored, the quality and consistency of the measurements, the failure modes being considered and the maintenance process available to respond to the findings.

For organisations managing heavy equipment, the objective is therefore not simply to collect vibration data. It is to turn useful condition information into better-informed maintenance decisions.

What Vibration Data Analysis Can Detect

Vibration measurements can provide information about the condition of rotating equipment and its components. Depending on the machine, measurement method and operating conditions, analysis may identify indications associated with issues such as imbalance, misalignment, looseness or bearing-related deterioration.

The interpretation of these indications requires engineering judgement. A change in vibration does not automatically confirm a particular failure, and abnormal readings should be considered alongside operating conditions, equipment history and other inspection findings.

Establishing a Reliable Baseline

A baseline provides a reference point against which future measurements can be compared. For a baseline to be useful, measurements should be collected consistently and with sufficient knowledge of the equipment’s normal operating conditions.

Measurement location, machine speed, load, temperature, sensor arrangement and data-collection method can all affect the readings. A change between measurements therefore needs to be assessed in context rather than treated as a standalone indication of failure.

Once suitable baseline information has been established, repeated measurements can help identify trends. Where a meaningful change develops, the maintenance team can determine whether additional measurements, inspection or engineering assessment is appropriate.

Analysing Vibration Patterns

Different analytical techniques can provide different information about machine behaviour.

Frequency-spectrum analysis can help identify frequency components associated with particular rotating elements. Time-waveform analysis can provide additional information about impacts or periodic events. Other techniques may be appropriate for machinery operating under variable-speed or changing-load conditions.

The appropriate analytical approach depends on the asset and the question being investigated. Good VDA therefore combines measurement data with knowledge of the machine, its operating environment and its relevant failure modes.

Where VDA Fits Into Maintenance Planning

VDA is most useful when condition information connects to an established maintenance decision-making process.

A developing vibration trend may provide an opportunity to investigate an issue before functional failure occurs, but the amount of warning available varies considerably. Some failure modes may develop gradually, while others can progress more quickly. Measurement frequency, equipment accessibility, operating conditions and the nature of the fault can also affect the available response time.

This means VDA should complement, rather than automatically replace, other maintenance practices such as inspections, lubrication management, scheduled servicing and operational monitoring.

From Detection to Action

When an abnormal condition is identified, the appropriate response depends on the evidence available and the importance of the asset.

Potential follow-up actions can include:

  • Collecting additional vibration measurements
  • Inspecting the equipment physically
  • Reviewing operating conditions
  • Checking lubrication condition or practices
  • Assessing alignment or balance
  • Reviewing maintenance history
  • Planning component replacement
  • Conducting further engineering investigation

Not every change in vibration requires an immediate shutdown. Equally, a developing fault should not be ignored simply because the equipment remains operational. The decision should be based on the available evidence, asset criticality and applicable maintenance procedures.

The Cost Considerations of Unplanned Versus Planned Maintenance

An unexpected equipment failure can involve several different cost categories. These may include emergency labour, replacement components, specialist equipment, transport, expedited parts and production disruption.

The financial consequences vary between operations. A failure on a non-critical asset may have limited operational impact, while an issue affecting a production-critical machine can create wider scheduling and maintenance consequences.

Planned intervention can provide greater opportunity to coordinate labour, parts, equipment and production requirements. However, condition monitoring does not automatically produce a financial saving. The potential value depends on factors including asset criticality, failure history, monitoring coverage, data quality and the organisation’s ability to act on the information.

For this reason, VDA programmes should be evaluated against the specific assets and maintenance objectives involved rather than relying on universal claims about savings, payback periods or extended component life.

Designing a VDA Programme Around the Asset

A practical vibration-monitoring programme starts with understanding which assets and failure modes matter most.

Prioritising Critical Equipment

Asset criticality can help determine where vibration monitoring may provide the greatest value.

Factors to consider include:

  • Consequences of equipment failure
  • Known or suspected failure modes
  • Historical maintenance records
  • Equipment operating conditions
  • Accessibility for measurements
  • Expected deterioration characteristics
  • Existing condition-monitoring practices
  • Available maintenance response options

This assessment helps determine whether VDA is appropriate and how it should fit into the broader maintenance strategy.

Choosing the Right Data-Collection Approach

The monitoring approach should reflect the equipment and the purpose of the programme.

Periodic measurements may be suitable for accessible equipment where developing faults provide sufficient opportunity for investigation. More frequent or continuous monitoring may be considered for selected assets where operating conditions, accessibility or failure consequences justify the additional monitoring requirements.

The objective should determine the technology and collection frequency rather than assuming that one monitoring method is suitable for every machine.

For projects that require condition information alongside broader engineering assessment, Engineered Installations Group’s engineering and analysis capabilities include engineering solutions and specialist analysis services.

Data Quality and Engineering Review

Reliable maintenance decisions require reliable information.

Measurement consistency, sensor positioning, machine operating conditions and collection frequency can all influence the usefulness of vibration data. A reading taken under significantly different operating conditions may not be directly comparable with an earlier measurement.

Maintenance records provide another important source of context. Previous component replacements, inspections, lubrication activities and known equipment issues can help engineers interpret changes in vibration behaviour.

Engineering review is particularly important where the data suggests a potential mechanical or structural issue. Vibration analysis is one source of condition information rather than a complete diagnosis of every equipment problem.

Where structural behaviour needs to be investigated alongside vibration information, EIG’s Finite Element Analysis services can support broader engineering assessment. EIG identifies FEA and vibration analysis among its current engineering and analysis capabilities.

How EIG’s VDA Capability Fits Into Field Maintenance

For equipment that cannot easily be brought into a workshop environment, condition information may need to be collected at the operating site.

EIG’s current on-site field services include Vibration Data Capture, engineering data capture, equipment scans, preventive maintenance support and project deployment support.

This type of field support can form part of a broader maintenance or engineering programme where equipment condition needs to be assessed in its operating environment.

The specific monitoring arrangement should still be determined by the equipment, measurement requirements and maintenance objectives rather than assuming that the same process applies to every asset.

Practical Applications Across Asset-Intensive Operations

VDA can be considered for rotating equipment where vibration measurements can provide useful information about mechanical condition.

Mining Equipment

Mining operations may consider condition monitoring for equipment such as conveyors, crushers, screens, mills, pumps and vehicle driveline components. Whether VDA is appropriate depends on the equipment design, failure modes, operating environment, accessibility and consequences of failure.

For critical assets, vibration information can form part of a broader maintenance strategy alongside inspections, lubrication practices, operating information and other diagnostic techniques.

EIG’s 3D scanning and design services can also provide equipment scanning, component design and prototyping capabilities where accurate physical information is required for a broader engineering project.

Heavy Vehicle and Transport Applications

Heavy vehicles operating in demanding environments can also present opportunities for condition monitoring where vibration information is relevant to the components being assessed.

The practical objective is to understand whether condition information can contribute to a maintenance decision, rather than assuming that vibration monitoring will identify every developing mechanical problem.

Where equipment requires workshop-based installation, inspection or maintenance support, EIG also provides metro installation services from its Perth facility. Its current service information describes installation, commissioning, quality assurance and preventive-maintenance support.

Using MTBF as a Reliability Metric

Mean Time Between Failures (MTBF) can be useful when assessing reliability trends for repairable assets.

However, MTBF should not be treated as proof that a particular maintenance technology has extended component life or prevented failures. Changes in MTBF can be influenced by equipment design, workload, operating conditions, maintenance practices, failure definitions and the quality of historical records.

A meaningful MTBF analysis therefore requires consistent failure definitions and reliable maintenance data. It also needs an appropriate asset population and operating context so that changes can be interpreted reasonably.

VDA can contribute condition information to this broader reliability process. When vibration trends are reviewed alongside maintenance history, inspection findings and operating information, organisations may have a stronger basis for investigating recurring problems and evaluating maintenance strategies.

Connecting VDA With Broader Engineering

Condition monitoring does not always exist as a standalone maintenance activity. Findings from vibration analysis may lead to questions about mounting arrangements, structural behaviour, component configuration or other aspects of equipment design.

EIG’s current capability statement identifies vibration analysis alongside 3D scanning, Finite Element Analysis, 2D and 3D design engineering and schematic design.

For projects where multiple engineering disciplines need to work together, EIG’s system design service combines electrical and mechanical engineering for integrated system solutions.

This broader approach can be useful when condition information identifies a question that requires investigation beyond the vibration measurement itself.

Questions to Ask When Developing a VDA Programme

Before implementing a vibration-monitoring programme, operators should establish how the programme will fit into their existing maintenance process.

Useful questions include:

  • Which assets are most critical to production or operations?
  • Which failure modes could vibration analysis help investigate?
  • How will baseline measurements be established?
  • What operating conditions should be recorded with each measurement?
  • How frequently should measurements be collected?
  • Who will analyse abnormal results?
  • What additional information is required before making a maintenance decision?
  • What response is expected when an abnormal trend is identified?
  • How will findings be recorded and tracked?
  • How will vibration findings be compared with maintenance history?
  • How will the programme’s usefulness be reviewed over time?

These questions help ensure that VDA is connected to practical maintenance decisions rather than becoming a standalone exercise in data collection.

Conclusion

Vibration Data Analysis can provide useful condition information for rotating equipment when measurements are collected consistently and interpreted in the context of the asset, its operating conditions and its maintenance history.

It can support investigation of developing mechanical conditions and help maintenance teams consider whether further inspection or planned intervention is appropriate. However, VDA does not guarantee early detection, prevent every failure or provide a universal prediction of remaining component life.

The value of a VDA programme depends on the equipment being monitored, the failure modes under consideration, data quality, monitoring frequency and the organisation’s ability to respond to findings.

EIG currently lists vibration analysis among its engineering and analysis capabilities, alongside services including Finite Element Analysis, 3D scanning and design, engineering solutions and field-based support.

For organisations assessing whether vibration monitoring is appropriate for their assets, the best starting point is to identify critical equipment, understand relevant failure modes and determine how condition information will feed into the existing maintenance process. Call us on +61 (08) 9419 7318 to discuss your requirements.