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Risk-Based Equipment Evaluation for Vibration Analysis

This risk-based evaluation method applies a structured, multi-factor approach—similar in concept to a Process Hazard Analysis (PHA)—to assess equipment criticality and determine appropriate maintenance strategies. Equipment is scored across key categories including operational impact, risk, age, maintenance cost, reliability history, and redundancy. The total score establishes a consistent basis for selecting the level of vibration analysis and maintenance activity, ranging from no planned maintenance to fully implemented condition monitoring programs.

Evaluation Categories

Area Served
Assesses the operational importance of the equipment based on where it is used:

• 10 – Asset Critical Spaces
• 10 – Workspaces
• 7 – Common Areas
• 5 – Equipment Support
• 2 – Material Storage

Risk
Evaluates the consequence of failure:

• 10 – Safety
• 10 – Asset Protection
• 7 – Energy Consumption
• 5 – Occupant Satisfaction
• 0 – Little or None

Age
Represents the stage of the asset lifecycle:

• 10 – 75–100%+ Asset Life
• 7 – Reconditioning Overdue
• 5 – Median
• 2 – Refurbished
• 1 – Newly Commissioned

O&M Cost
Reflects maintenance cost structure and support requirements:

• 10 – OEM Support Required
• 7 – Outsourced Repairs
• 5 – Outsourced Maintenance
• 3 – Self-Performed
• 0 – Run-to-Failure

Equipment History
Captures historical reliability and incident frequency:

• 10 – High Failure Rate
• 8 – High Incident Rate
• 3 – Few Incidents
• 1 – PM Activities Only
• 0 – No History

Redundancy
Defines the availability of backup systems:

• 10 – Zero Redundancy (N+0)
• 7 – Seasonal Redundancy
• 5 – N+1 Redundancy
• 2 – N+2 Redundancy
• 1 – Seldom in Service

Scoring Method

Each category is assigned a value based on the defined criteria.
The total score represents the overall criticality of the equipment.

Maintenance Activity Levels

Equipment-Specific
PM, Route-Based Condition Monitoring (CM), and Online Condition Monitoring

Score: 36–60
PM and Route-Based Condition Monitoring

Score: 25–35
Preventive Maintenance

Score: <25
No Planned Maintenance

Summary

This method applies a structured, multi-factor evaluation process—similar in approach to a PHA—to standardize how equipment is assessed and how maintenance strategies are selected.