CMRP PRACTICE QUESTIONS &
ANSWERS(RATED A+)
Replacement Asset Value (RAV) - ANSWERdefined 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 - ANSWERmetric 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 - ANSWERAvailability × Performance
Efficiency × Quality
Availability - ANSWERdefined as the percentage of time that the process is actually
operating (uptime) compared to when it is scheduled to operate
Performance efficiency (rate/speed) - ANSWERdefined as the percentage of Actual Run
Rate/Cycle Time to the Best Run Rate/Cycle Time
Quality - ANSWERdefined as the percentage of "First Pass, First Time" Saleable
Production to the Actual Production
Actual Production - ANSWERtotal quantity of production produced in the given time
period, regardless of its quality
Lagging Indicator - ANSWERAn indicator that measures performance after the business
or process result starts to follow a particular pattern or trend
Leading Indicator - ANSWERAn 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 - ANSWER1. Management processes and behaviors (mission and vision,
people skills)
2. Operational execution (operations, design and maintenance)
3. Manufacturing performance (availability, quality, cost and benefits)
mean metrics - ANSWERmetrics that describe the Reliability, Availability and
Maintainability (RAM) characteristics of a component, asset or even facility
Inherent Availability - ANSWERmeasure of the variables inherent in the design that
affect availability. In the calculation of downtime, it usually includes only active repair
, time. It does not include preventive maintenance time and administrative or logistic
delays, but does include corrective maintenance downtime
Inherent Availability Formula - ANSWERAi = MTBF / (MTBF + MTTR)
Where MTBF = Mean Time Between Failures
And MTTR = Mean Time to Repair (corrective maintenance only)
Achieved Availability - ANSWERprobability that an item, when used under design
conditions in an ideal support environment, will perform satisfactorily. It includes both
active repair time and preventive maintenance time, but excludes administrative and
logistic delay times
Achieved Availability Formula - ANSWERAa = MTBM / (MTBM + MDTM)
Where MTBM = Mean Time Between Maintenance
And MDTM = Mean Downtime for Maintenance
Operational Availability - ANSWERprobability that an item, when used under design
conditions in an operational environment, will perform satisfactorily. It includes active
repair time, preventive maintenance time and administrative and logistic delays and
represents the availability that is actually experienced
Operational Availability Formula - ANSWERAo = MTBM / (MTBM + MDT)
Where MTBM = Mean Time Between Maintenance
And MDT = Mean Down Time
Equipment Availability - ANSWERdefined by The Association for Manufacturing
Technology as the percentage of potential production time during which equipment is
operable. The term is applied to a single piece of manufacturing equipment (or several
machines acting as a unit)
Equipment Availability Formula - ANSWER= [Production Time / Potential Production
Time] x 100
Point Availability - ANSWERprobability that a device, system or component will be
operational at any random point in time
Total Maintenance Cost - ANSWERTotal expenditures for maintenance labor (including
maintenance performed by operators, e.g., total productive maintenance (TPM),
materials, contractors, services and resources. Include all maintenance expenses for
outages, shutdowns or turnarounds, as well as normal operating times. Include capital
expenditures directly related to end-of-life machinery replacement
Stocked MRO Inventory Value As a
Percent of Replacement Value (RAV) - ANSWERThe metric is the value of
maintenance, repair and operating materials (MRO) and spare parts stocked on site to
ANSWERS(RATED A+)
Replacement Asset Value (RAV) - ANSWERdefined 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 - ANSWERmetric 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 - ANSWERAvailability × Performance
Efficiency × Quality
Availability - ANSWERdefined as the percentage of time that the process is actually
operating (uptime) compared to when it is scheduled to operate
Performance efficiency (rate/speed) - ANSWERdefined as the percentage of Actual Run
Rate/Cycle Time to the Best Run Rate/Cycle Time
Quality - ANSWERdefined as the percentage of "First Pass, First Time" Saleable
Production to the Actual Production
Actual Production - ANSWERtotal quantity of production produced in the given time
period, regardless of its quality
Lagging Indicator - ANSWERAn indicator that measures performance after the business
or process result starts to follow a particular pattern or trend
Leading Indicator - ANSWERAn 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 - ANSWER1. Management processes and behaviors (mission and vision,
people skills)
2. Operational execution (operations, design and maintenance)
3. Manufacturing performance (availability, quality, cost and benefits)
mean metrics - ANSWERmetrics that describe the Reliability, Availability and
Maintainability (RAM) characteristics of a component, asset or even facility
Inherent Availability - ANSWERmeasure of the variables inherent in the design that
affect availability. In the calculation of downtime, it usually includes only active repair
, time. It does not include preventive maintenance time and administrative or logistic
delays, but does include corrective maintenance downtime
Inherent Availability Formula - ANSWERAi = MTBF / (MTBF + MTTR)
Where MTBF = Mean Time Between Failures
And MTTR = Mean Time to Repair (corrective maintenance only)
Achieved Availability - ANSWERprobability that an item, when used under design
conditions in an ideal support environment, will perform satisfactorily. It includes both
active repair time and preventive maintenance time, but excludes administrative and
logistic delay times
Achieved Availability Formula - ANSWERAa = MTBM / (MTBM + MDTM)
Where MTBM = Mean Time Between Maintenance
And MDTM = Mean Downtime for Maintenance
Operational Availability - ANSWERprobability that an item, when used under design
conditions in an operational environment, will perform satisfactorily. It includes active
repair time, preventive maintenance time and administrative and logistic delays and
represents the availability that is actually experienced
Operational Availability Formula - ANSWERAo = MTBM / (MTBM + MDT)
Where MTBM = Mean Time Between Maintenance
And MDT = Mean Down Time
Equipment Availability - ANSWERdefined by The Association for Manufacturing
Technology as the percentage of potential production time during which equipment is
operable. The term is applied to a single piece of manufacturing equipment (or several
machines acting as a unit)
Equipment Availability Formula - ANSWER= [Production Time / Potential Production
Time] x 100
Point Availability - ANSWERprobability that a device, system or component will be
operational at any random point in time
Total Maintenance Cost - ANSWERTotal expenditures for maintenance labor (including
maintenance performed by operators, e.g., total productive maintenance (TPM),
materials, contractors, services and resources. Include all maintenance expenses for
outages, shutdowns or turnarounds, as well as normal operating times. Include capital
expenditures directly related to end-of-life machinery replacement
Stocked MRO Inventory Value As a
Percent of Replacement Value (RAV) - ANSWERThe metric is the value of
maintenance, repair and operating materials (MRO) and spare parts stocked on site to
