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Reliability Program Scorecard
— Description and Use
by
John S. Mitchell
Click
here to download the Reliability Scorecard (.xls)
Click here to download the Reliability Scorecard (.zip)
Introduction:
Scorecard Objective:
The Reliability
Scorecard is the result of a several year effort to describe the
total scope, content and effectiveness of a comprehensive
reliability program. The scorecard is intended for use to define
elements that should be considered for inclusion in a new
reliability program as well as provide a basis for auditing the
content and effectiveness of an existing reliability program.
Scorecard
Overall Description and Content:
The scorecard, in
spreadsheet format, divides a comprehensive reliability program
into twelve program categories. The scorecard consists of two
worksheets as follows:
1.
Category Summary
-
Detailed
Scorecard
The first
worksheet of the Scorecard, Category Summary, lists the twelve
program categories and the highest weighted elements within each
category. The second column on the Category Summary, Element
Weight - %, calculates automatically through the Detailed
Scorecard (second worksheet) from Category Weight - % entered
manually in the third column. This will be explained in detail
later.
Note: Elements in
each of the twelve categories listed on the Summary worksheet
have been sorted by weight in descending order. This is intended
to emphasize relative priorities of the elements listed. It
results in a different sequence than will be found on the
Detailed Scorecard. If there is any question regarding origin,
the element weight cell will identify the row in the Detailed
Scorecard.
It also should be
noted that the wording of elements on the Category Summary may
differ slightly from wording on the Detailed Scorecard. The
description and quartile ranking on the Detailed Scorecard
provides an assessment of effectiveness. The Element Weight
listed on the Category Summary is the maximum. If a program has
high plant and system reliability, optimum maintenance costs,
minimum emergency work, to name three elements, the Element
Weight listed on the Category Summary is the contribution to
total program effectiveness. Taking the logic further, the
Category Summary implies that a reliability program with the
elements listed, performing at best practice levels, constitutes
almost 80% of an optimum program.
The second
worksheet is the Detailed Scorecard. The Detailed Scorecard
lists elements of each of the twelve program categories in ten
columns. The leftmost column lists individual elements that are
considered necessary for each program category. The next three
columns, from left to right, define necessity, comparative
metrics and any additional requirements such as a charter or
procedure that must be published to meet requirements.
The fifth and
sixth columns assign percentage weights for each element within
the category. Individual weights for each element within the
category are manually entered as a percentage of 100% in the
fifth column. Element weights within the reliability program as
a whole are automatically calculated based on the relative
weights entered in the third, Category Weight, column on the
Category Summary (first worksheet) and repeated in the top row
of each category.
Note: The
spreadsheet is constructed such that changing a Category Weight
(third column) on the first worksheet, Category Summary, will
apply the change to the corresponding category in the Detailed
Scorecard. All program element weights within the scorecard
category automatically recalculate using the relative weights in
the fifth column of the Detailed Scorecard. The only requirement
when adjusting either category weights in the Summary sheet or
element weights in the Detailed Scorecard is to manually
maintain the total at 100% shown in the last line of the
Category Weight column in the Summary, top line of the Element
Weight column in each category on the Detailed Scorecard.
To provide a check
on the math and formulas, the Program Weight listed in the top
row of each category in the Detailed Scorecard, shown as a
percentage, is the value transmitted from the Category Summary.
The last row in the same column, expressed as a decimal, sums
the individual program weights for each element within the
category. If the formulas and entries are correct the two
numbers (absolute) will be identical.
The four rightmost
columns on the Detailed Scorecard denote quartile spread between
the best performers and the rest. As an example, first quartile
performers should have an overall plant, system and equipment
availability greater than 95%. An overall availability less than
70% indicates fourth quartile performance. It is recognized that
there may be adjustments required for specific processes and
industry groups.
Several essential
elements of a total maintenance program such as Work and Stores
Management processes are not listed beyond metrics that are key
to the effectiveness of a reliability program. For other
essential elements such as RCM and RCFA, the scorecard only asks
whether the program is in place and effective. In both cases,
details necessary to evaluate the completeness of these
processes / programs and assess their effectiveness are
available in literature on the subject. The details will be
necessary to assign partial scores indicating the completeness
and effectiveness of the program.
An abbreviated
glossary from the draft fourth edition of the Asset Optimization
Handbook is located directly below this description to answer
any questions regarding terminology or how a specific term is
used within the scorecard.
Use of the
Scorecard
The scorecard is
yours and can be used in any way you wish. As one way to get
started you might begin as follows:
1.
Review the Category
Summary worksheet to determine if all the elements you consider
important to your site are listed.
During the
preparation of the scorecard, and especially during the
workshops conducted at IMC 2005, it has been very apparent that
a wide diversity of opinions exist on the composition of a
reliability program and weight of elements depending on the
specific facility and type of process. Hopefully this scorecard
will provide you with a good starting point.
2.
Review the Detailed
Scorecard, second worksheet. Are there any elements listed on
the Detailed Scorecard that are important to your site but don’t
appear on the Detailed Scorecard or Category Summary? You can
easily add to the Scorecard or Summary
It is assumed that
that you are sufficiently competent with Excel to be able to add
rows on both the Summary and Scorecard, insert the correct
formulas in the weight cells and the necessary formulas on the
Summary and Detailed Scorecard to link the two. If there is any
doubt, you can view current cell formulas and simply copy an
existing cell formula into an added cell and revise the
references as necessary.
3.
With all the
important elements listed on the Category Summary, adjust the
weights to obtain more or less the importance you consider
applicable for your facility. You may have to adjust weights on
the Detailed Scorecard as well to obtain the results you are
seeking.
Remember, to make
the weights work you must manually adjust the weights of each
category on the Category Summary and individual elements on the
Detailed Scorecard to total 100%.
Acknowledgements
The contribution
of all participants in the IMC 2005 workshops is greatly
appreciated. Your comments and suggestions contribute
significantly to the range and depth of the Scorecard and the
value that will be gained by all users. Special thanks to
Terrence O’Hanlon for encouraging the effort and sponsoring the
four workshops at IMC 2005. Very special thanks to Jack Nicholas
for continuing words of encouragement, thoroughly reviewing
multiple drafts and numerous highly constructive comments.
I hope the
Reliability Scorecard is helpful for you. Please feel free to
contact me if you have any questions or ideas for improvement.
Sincerely,
John S. Mitchell
Post a message for John at MaintenanceForums.com
Availability:
The time a system
or asset is in an operable state capable of meeting all mission
requirements
Asset, Physical:
Fixed and rotating
equipment, fired and unfired heat exchangers, electrical
distribution components and cabling, control instrumentation,
piping, valving and structures
Asset Utilization:
Percentage of time
a plant is operating at Maximum Demonstrated Production Rate,
with perfect quality and defined yield
Benchmarking:
A process for
measuring “best practice” performance and comparing the results
to current performance in order to establish performance
objectives and identify opportunities for improvement. The
comparison to “best practice,” often called a GAP analysis,
leads to a prioritized array of optimizing changes directed to
gaining “best practice” levels of effectiveness.
CBM:
See
Condition-Based Maintenance.
Computerized
Maintenance Management System (CMMS):
A computer system
for measuring, managing, and analyzing the maintenance process.
Includes Maintenance Repair Overhaul task planning and
scheduling, inventory control and management, labor and material
cost accounting.
Condition
Monitoring (CM):
The process of
recording measurements that define condition without disrupting
operation (e.g., vibration, fluid and electrical
characteristics, and thermal gradients) and comparing each to
limits.
Condition Based
(or Predictive) Maintenance (CBM / PdM):
Maintenance based
on actual condition (objective evidence of need) obtained from
in-place, non-invasive tests and operating and condition
measurements
Effectiveness:
Performing the
correct task efficiently – results oriented
Efficiency:
Performing a given
task (not necessarily the correct task) well – task oriented
Emergency,
break-in Work Orders:
Work Orders for
reactive work that break / interrupt an existing work (typically
weekly) schedule. Some organizations may have several levels of
break-in work depending on safety or production impact, start
requirements (immediately) and automatic overtime
authorization.
ERV:
Estimated
Replacement Value: The current cost to reproduce the asset
capacity or production output, same as RAV
Failure:
No longer capable
of performing the intended function
FA / Failure
Analysis:
See RCFA, Root
Cause Failure Analysis
FMECA:
Failure Modes,
Effects, and Criticality Analyses: An integral part of RCM
directed to determining type, probability, cause and
consequences of potential failures.
KPI:
Key Performance
Indicator – metrics that indicate performance to high priority
objectives
Metrics:
Objective,
numerical measures of performance and effectiveness
MTBF:
Mean Time Between
Failure: Calendar time from the onset of one failure to the
next; includes time to repair.
MTBR:
Mean Time Between
Repairs: Calendar time from the restoration of one failure to
the onset to the next; excludes time to repair.
MTTR:
Mean Time To
Repair: Time necessary to complete a repair, restore to service
MRO:
Maintenance,
Repair, Overhaul
PdM:
Predictive
Maintenance: See Condition-Based Maintenance.
Planned
Maintenance:
Maintenance
planned and scheduled in advance of commencement by a specified
lead-time (planning interval), typically one week.
Predictable
Capacity:
Ability to meet
future product delivery requirements on time, quality and cost
Preventive
Maintenance (PM):
Time based
maintenance tasks including inspection, service and / or
replacement conducted at regular, scheduled intervals based on
average statistical / anticipated lifetime. Task intervals may
be based on calendar or operating time.
Proactive
Maintenance:
Typically
non-repetitive activities and actions applied to equipment prior
to and during operation to prevent problems, gain greatest
reliability, and minimize failure. Examples include pipe flange
and precision shaft alignment, precision balancing, installation
of lubrication reservoir filter breathers and moisture traps.
RAV:
Replacement Asset
Value: The current cost to reproduce the asset capacity or
production output
RCFA:
Root Cause Failure
Analysis: A disciplined, formalized process to identify the
fundamental defect that caused a failure
Reactive
Maintenance:
Corrective action
taken upon failure or obvious, unanticipated threat of failure
Reliability:
The probability
that a system, device or component will perform its prescribed
duty without failure for a given time when operating correctly
in a specified environment.
Reliability
Centered Maintenance (RCM):
A systematic,
disciplined process to ensure safety and mission compliance and
system function.
The process
defines system boundaries and identifies system functions,
functional failures, and likely failure modes for equipment and
structures in a specific operating context. It develops a
logical identification of the causes and effects (consequences)
of system and functional failures to arrive at an efficient and
effective asset management strategy to reduce the probability of
failure.
Repair:
An invasive
process to correct a defect; interrupts availability
Risk:
The probability
multiplied by the consequences of an event
ROA:
Return On Assets:
Profit divided by asset value
ROE:
Return On Equity:
Profit divided by corporate equity
ROI:
Return On
Investment: The profit gained from an investment divided by the
monetary value of the investment
ROCE:
Return On Capital
Employed
RONA:
Return On Net
Assets: sales minus expenses divided by total assets
Scheduling:
Combining the resources:
procedures, people (skills), parts and operating line-up to
perform a given task effectively. Sequencing work to assure most
effective use of resources, production availability.
Streamlined RCM (SRCM):
Streamlined
Reliability Centered Maintenance: An optimized form of RCM that
begins with a risk rank prioritization to assure resources are
applied most effectively to equipment and systems with highest
potential for value and return and builds from templates and
predetermined maintenance lists to assure all potential failures
and corrective action are considered.
Total Productive
Maintenance (TPM):
A
multi-discipline, team-based approach to equipment management
that emphasizes cooperative maintenance (autonomous
maintenance), team activities, zero defects / zero loss
operations, and cleanliness. Pillars of TPM include:
§
A multi-discipline,
team-based approach to equipment management that emphasizes
cooperative maintenance (autonomous maintenance), team
activities, zero defects / zero loss operations, and
cleanliness. Pillars of TPM include:
o
Target management and
quality metrics
o
Failure source location and
correction
o
Checklists and
accountability
o
Basis for Clean, Lubricate,
Adjust, Inspect, Repair (CLAIR)
-
Preventive and
Condition-Based Maintenance by maintenance department
-
Training to improve
operation and maintenance skills
-
Early equipment
management – improve equipment design, manufacture and
installation
o
Prevent problems occurring
during new plant or equipment startup
Unplanned
Maintenance:
Typically emergency or break-in
maintenance that must be accomplished immediately (inside the
planning interval).
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