, CMRP Certification Exam Practice Guide – In-Depth
Formulas, Metrics & Maintenance Indicators for
Certified Maintenance and Reliability Professional
Success (2025/2026 Edition).
Replacement Asset Value (RAV)
defined as the cost that would be incurred, in today's dollars, to replace the facility and equipment in its
current configuration.
Overall Equipment Effectiveness (OEE) definition
metric for measuring how well a process is operating by evaluating the three major process
components: availability, performance efficiency (rate/speed) and quality. The process can be a single
piece of equipment, a manufacturing cell, a production line or a plant
Overall Equipment Effectiveness (OEE) equation
Availability × Performance Efficiency × Quality
Availability
defined as the percentage of time that the process is actually operating (uptime) compared to when it is
scheduled to operate
Performance efficiency (rate/speed)
defined as the percentage of Actual Run Rate/Cycle Time to the Best Run Rate/Cycle Time
Quality
defined as the percentage of "First Pass, First Time" Saleable Production to the Actual Production
Actual Production
total quantity of production produced in the given time period, regardless of its quality
Lagging Indicator
An indicator that measures performance after the business or process result starts to follow a particular
pattern or trend
Leading Indicator
An indicator that measures performance before the business or process result starts to follow a
particular pattern or trend
Three (3) sets of measurable components that make up the maintenance and reliability process
Formulas, Metrics & Maintenance Indicators for
Certified Maintenance and Reliability Professional
Success (2025/2026 Edition).
Replacement Asset Value (RAV)
defined as the cost that would be incurred, in today's dollars, to replace the facility and equipment in its
current configuration.
Overall Equipment Effectiveness (OEE) definition
metric for measuring how well a process is operating by evaluating the three major process
components: availability, performance efficiency (rate/speed) and quality. The process can be a single
piece of equipment, a manufacturing cell, a production line or a plant
Overall Equipment Effectiveness (OEE) equation
Availability × Performance Efficiency × Quality
Availability
defined as the percentage of time that the process is actually operating (uptime) compared to when it is
scheduled to operate
Performance efficiency (rate/speed)
defined as the percentage of Actual Run Rate/Cycle Time to the Best Run Rate/Cycle Time
Quality
defined as the percentage of "First Pass, First Time" Saleable Production to the Actual Production
Actual Production
total quantity of production produced in the given time period, regardless of its quality
Lagging Indicator
An indicator that measures performance after the business or process result starts to follow a particular
pattern or trend
Leading Indicator
An indicator that measures performance before the business or process result starts to follow a
particular pattern or trend
Three (3) sets of measurable components that make up the maintenance and reliability process
