Equipment Criticality Analysis

Criticality Ranking for Equipment
Enabling better process control

Introduction

Equipment criticality analysis is a quantitative analysis of equipment faults, and ranking them in order of serious consequences on safety, environment, production loss and maintenance cost. The key benefit of this analysis is to provide the means to recognize high-criticality vs. low-criticality equipment, reduce the level of uncertainty and focus on high-priority maintenance tasks. The analysis also helps select the best and most economic maintenance strategy, prioritize work orders and decide on insurance and the demand on spare parts

Purpose of Equipment Criticality Analysis

The Equipment Criticality Analysis is used to identify:

  • Which equipment has the most serious potential consequences on business performance, 'if it fails'? The resulting Equipment Criticality Number is used to prioritize resources performing maintenance work
  • Identify what equipment is most likely to negatively impact business performance because it both matters a lot when it fails and it fails too often. The resulting Relative Risk Number is used to identify candidate assets for reliability improvement

Equipment Criticality Ranking

Sample Outcome on Equipment Criticality Ranking

Criticality Ranking
Rating Score Impact
Very Very High 5 >2500
Very High 4 1751-2500
High 3 1001-1750
Medium 2 501-1000
Low 1 <=500

Sample Outcome on Business Score

Business Score
Rating Score Impact
Very Very High 5 >20
Very High 4 16-20
High 3 11-15
Medium 2 6-10
Low 1 <=5

Sample Outcome on Maintenance Score

Maintenance Score
Rating Score Impact
Very Very High 5 >2500
Very High 4 1751-2500
High 3 1001-1750
Medium 2 301-1000
Low 1 <=300

Sample Outcome on Safety Score

Safety Score
Rating Score Impact
Very Very High 5 >100
Very High 4 76-100
High 3 51-75
Medium 2 26-50
Low 1 <=25

Sample Outcome on Production Impact Score

Production Impact Score
Rating Score Impact
Very Very High 5 18
Very High 4 23
High 3 39
Medium 2 18
Low 1 24