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This is a very
interesting presentation on TPM, one of the alternatives that
manufacturers will have to consider as we face the globalization that
requires our best strategies to succeed.
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Best Practices in Maintenance
A 13 Step Program in
Establishing a World Class Maintenance Organization.
by Bruce C. Hiatt
Facilities Engineer, Anesta Corp. |

For decades,
industrial and other organizations concentrated most of their attention upon
product production, generally ignoring the maintenance function, viewing it
as a necessary evil. During the recent years there has been a gradual
attitude change in how general corporate managers view the maintenance
function. One of the most important factors forcing this change was that
maintenance departments became major cost centers within those
organizations. Today with general operating costs rising at the rate of 10%
+/- each year, there is the potential for the realization of significant
savings in the maintenance department that deserves serious scrutiny. By
implementing certain of the advanced management practices outlined here
savings can be very significant.
By integrating the
listed programs the Maintenance Department, will produce dividends in the
immediate, as well as for the long term value enhancement. Through the
application of Good Management Practices (GMaP), and with the use of sound
technical expertise, cost reductions in the range of 20% to 35% are within
the realm of possibility. Industrial Maintenance Managers who integrate all
of the listed programs will experience profound affects, gain increased
control over the performance of their organizations, and thus achieve real
successes. How much success will be dependent upon how well each specific
function and each specific activity are integrated into the plant
maintenance and production work routine. There are thirteen basic facets to
Best Practices in Maintenance as they will have an impact on the
organization when integrated, they are:
1. Philosophical and Theoretical
Shifts.
To achieve Best
Practices, within the maintenance and production organizations, there must
be both a technological and an organizational philosophical shift in the way
that departments conduct their daily business. Unless both the technical and
organizational shifts occur at the same time, the cycle of change can
not be sustained. The organization will slip back to its old ways, failing
to achieve these Best Practices in Maintenance.
2. Understanding Change.
Most people fear
changes therefore are resistant to it. It is important that everyone realize
the importance of making the necessary changes. Only those willing to make
the changes necessary can expect to achieve real success. As the maintenance
and production organizations make the decision to become a World Class
Organization, they must be willing to develop within themselves a highly
disciplined and committed plan of action. Once the plan of action is
developed, it must be reviewed and agreed upon by top management. When
approval has been received, maintenance and production managers must move
boldly and swiftly to make the changes as necessary and implement the
plan as rapidly as possible.
3. Teamwork.
All plant
operation and support personnel need to be informed of the plan and its
affect upon each individual in a timely fashion. They need to participate in
the re-engineering processes so they can gain ownership. Personnel who
understand and agree with a process are more willing to cooperate with it,
and will be less likely to create difficulties later on. Teamwork throughout
the organization realignment process is critical to achieve success.
4. Training.
A specific
training program must be developed covering all aspects of the proposed
changes being made. Training sessions and progress meetings will be
necessary to introduce the new ideas. Basic methods must be presented so
that personnel will understand them. Training sessions should be limited to
one hour each day and cover all aspects of the new plan. Workshops can be
used to focus on the current and day-to-day problems as they arise.
Use practical
training methods to assist in the development of solutions as problems
arise. Training must be ongoing until the newly established standards are
fully established, so that they can be maintained.
Plant personnel
need to be trained in Problem Solving Skills using a formal
methodology. People need this type of training so they can learn how to
constructively analyze information. Using a single common approach
methodology, everyone involved will bring a common approach or perspective
to how they will access performance problems and develop recommendations.
Anytime problems arise and the indicators' trend in a negative direction,
the company as a whole can pull together quickly using the multilevel,
cross-functional team that is equipped to analyze the opportunity.
Once trained in
problem-solving methodology, groups may need the support of a qualified
facilitator. An individual within the organization (generally a Personnel
Trainer) needs to be assigned to receive specialized training to meet those
needs. Having a facilitator present is beneficial while the groups are small
and new to the process. As time passes, they will naturally be able to work
more and more without the aid of the facilitator. The facilitator should be
able to provide support in the development of positive group dynamics by
honing those skills they learn. Groups as they are established need to
be and should be made up of personnel from the various departments within
the company.
5. Asset
Management.
Realign the plant
into major plant equipment configurations or asset centers. An asset center
can be a group of equipment designed to produce a single product, or
component of a product. Each of the newly established asset centers will
constitute the newly devised individual cost centers. By associating all
costs, equipment, personnel and material associated to the operation of the
group costs can be assigned. Once established, each cost center must
be tracked and monitored for the important trending factors to provide
management personnel with accurate and viable information as to where money
is being spent. Establish a unique but specific center identity
classification for each asset center. In this manner total operation and
maintenance costs, with relevant work orders and their associated costs are
charged to the specific cost center. Equipment descriptions, personnel
assigned and other specific identification systems are then standardized to
facilitate easy data retrieval. With a sound and effective asset management
plan, the computerized maintenance tracking system will function at its full
potential.
6. Warehouse/Inventory
Control.
The
re-organization of the warehouse function is one of the more critical
function changes. Most existing store rooms are improperly stocked, because
the nature of maintenance personnel is to hoard critical individual parts
and supplies until it is necessary to overhaul the entire system. It is
essential that the parts on hand be adequate to meet the needs of all work
in progress and emergencies, so that each maintenance function be fully
served: not too many, not too few. The warehouse must be audited and
inventoried in its entirety including the hoarded parts and supplies. Parts
and supplies must be tagged and be easily located within the store-room.
Once tagged and placed into the store room, the part must be entered into an
automated control system by identification number, location and cost
center(s) that use the part. Parts and equipment must be cross-referenced by
application to multiple cost centers. This will allow maintenance personnel
to locate any specific item and/or part each time they make a search.
Create an
equipment history analysis, identify dormant or excess stock items. Once
identified, excesses are tagged for salvage or scrap keeping your inventory
viable. The creation of optimum warehouse inventory levels is
essential, on the basis of real time usage that is justifiable. Procedures
for spare part receipt, issue, audit, salvage and scrap must be formulated.
A written directive to produce a clear understanding by all personnel is
essential.
Warehouse and
maintenance personnel must be trained in all aspects of data entry relevant
to their job duties. Access into or entry into the warehouse must be
restricted to only warehouse-men and be strictly enforced.
7. Corrective
Maintenance (CM).
With assets and
parts identified, corrective and preventive maintenance can be carried out
in a more meaningful fashion. Personnel can be assigned to meet the needs of
the newly created asset centers. Their costs directly associated to the
individual asset center. Work orders must be written directly to the asset
number in question so that costs associated with the work order for parts,
materials and labor are effectively accumulated then used for accurate cost
analysis, and to enhance performance forecasting.
Everyone
associated with production and maintenance should know what is being done,
by whom, where, when and why. Develop written procedures for the work
order system as a whole, detailed responsibilities are assigned to specific
personnel for the completion and reporting of work. The use of operators to
do routine maintenance tasks such as lubrication, minor adjustment is
essential.
Planning is the
critical stage in the work order system. It is the Planner who sets the
expected labor, material and time line requirements. The planner must be
charged and empowered to make the determination of how much work can be
accomplished in a given time period for each asset center to facilitate both
production requirements and maintenance needs, and how much production and
maintenance backlog there will be. Backlog must be effectively managed so
that it does not grow to an unmanageable size. The planner must be
answerable to the production manager and the maintenance manager to do his
job effectively, and meet both maintenance and production requirements.
8. Preventive
Maintenance (PM).
The PM program
must also undergo a total re-evaluation to determine its adequacy and
effectiveness. Too much unscheduled downtime and frequent equipment
breakdowns indicate that PM's are not working as they should. The real
objective of the PM Program is to reduce downtime and breakdowns to a level
that is acceptable and manageable by the specific departments. The effective
PM program must be set to work hand-in-glove with a corrective and a
predictive maintenance program if it is to be successful in the reduction of
unnecessary equipment down-time.
It is essential
that there be good coordination and cooperation between operations and
maintenance managers as a standard practice. Use written directives to
establish who is in the lead and who is in the lag position in various
operating scenarios. It is critical to success to realize that operations
not always be allowed the lead. The leads should always relate to equipment
reliability and be the dictating factor in establishing lead and lag
positions. At the same time, maintenance needs to realize that without the
cost center effectively producing products the outcome in all areas is
adversely affected.
9. Predictive
Maintenance (PdM).
The effective use
of good forecasting tools are essential, if it is the desire of managers, to
prolong the useful operational life of the given equipment configuration.
Through proper application of the many and varied predictive maintenance
tools available to maintenance personnel, failure patterns can easily
identify and used to effectively predict eventual failure with some degree
of accuracy over time. The more common predictive tools available to
maintenance departments without great cost are: vibration analysis,
lubrication analysis, thermography, and ultrasonics.
All machines give
early warning signs predicting their impending failure. The correct
application and early uses of those predictive tools will greatly aid in the
identification of impending problems before they become catastrophic. With
the use of early detection and effective alert mechanisms by the maintenance
department, failure pat-terns can be identified providing managers with
information necessary for planning. Effective use of failure trending, will
over time, indicate an adverse effect in performance for any equipment
assigned to the trending analysis and its ultimate effect upon production.
When trends are ignored, failures do occur, the lesson to learn is how soon
or when to make the necessary repairs. To capture a pending failure just
prior to adverse action in performance, rather than just prior to the
equipment failure event is the key. Effective failure analysis data becomes
a tool to judge the trade off, down time versus loss of productivity due to
failure.
PdM must
therefore become a routine part of any regular Production and PM program if
it is to be effective.
10. Purchasing.
Purchasing also
plays an important role in the modern integrated maintenance organization.
The use of an automated system to trigger purchase orders that are designed
to facilitate stocking levels as they are established is essential. Adequate
planning and proper establishment of workable stock levels, (controlled by
supply lead-time and usage) can prevent stock-outages and overstocking. This
action will be very effective in controlling stock purchasing activi-ties.
The trick here is
to have on-hand only the items required for genuine emergencies. By letting
a supplier be the main stock point, your in-house stock levels will be only
sufficient to meet the needs of a bonafide emergency. One method is to find
a supplier who will be willing to guarantee an adequate supply of your stock
items on his shelf to meet all the needs of your operation. This can be
accomplished by selective purchasing. Selective purchasing can be done by
agreeing to purchase all your supplies from a single supplier. To remain
competitive, commit to purchase from the supplier on an annual basis, but
re-bid purchases on that basis and spot check competitors frequently. A
written contract can be very helpful, specifying the need to remain
competitive.
The first ten
activities were designed to assist managers in regaining control of their
maintenance function. As they are put into practice, they can be refined and
tuned to meet the individual plant's requirement.
11. Pro-Active
Maintenance (PAM).
Pro-active
maintenance is a term to identify the enhancement of both the preventive and
predictive maintenance technologies. It is absolutely necessary that
managers identify and document data gained from both the PM and PdM programs
so that they can develop the PAM portion of the equation. The PAM becomes
the history that is viable to each cost center.
To make
this happen, establish and effectively use a documented history for
each cost center. Start charting each center's uptime versus downtime,
determine the cause and effect factors as they become apparent. Make changes
in the operation and maintenance functions as they affect the overall
uptime. Equipment histories must be accurate for them to be useful and
effective in the PAM program. The effective PAM program will ultimately lead
to a timely and accurate implementation plan of action. The PAM will provide
managers a vehicle to effectively create a reduction in total maintenance
down time while maximizing equipment production reliability and useful life.
12. Accountability.
Accountability is
required and must be built into the system. Individuals and groups assigned
need to be specifically challenged so that the drive is in the proper
direction. Activities need to be charted along with the development of
detailed plans and how they have impact on the key measures. The indicators
are then used to highlight the success of the plan and serve to reinforce
those actions taken.
Too often personnel
perceive accountability in the negative. They are often called to account
for poor performance. It is critical that a reward's mechanism be built into
the measurement system. With positive results, visible recognition will have
positive impact on the key measures. The use of indicators to highlight the
success of the plan will serve as a factor for reinforcement.
Overview Indicators:
These indicators
are normally valuable for upper management, and are generally broad based.
To be more effective, each is broken down into sub-indicators for a true
analysis. The sub-indicators need to be shared with all employees. Some of
the viable sub-indicators are:
Budget Compliance (Actual versus Forecast).
Plant-wide Overall Equipment Effectiveness
(OEE).
Costs as a Percent of Sales or Operating Costs.
Maintenance Costs as a Percent of Replacement
Asset Value.
Maintenance Dollars per Unit Produced.
Percent Absenteeism.
Safety, Environmental and Regulatory
Performance/Compliance.
Training Hours or Dollars as a Percent of
Overall Hours or Dollars Expended.
Employee Turnover
Organizational Structure
Indicators:
Of lesser
importance are the organizational structure indicators, however they do
reflect ratios of different positions or functions. They do show if the
organization is moving more or less in empowerment. Some of the indicators
are:
Ratio of Salaried Employees to Hourly
Employees.
Ratio of Company Employees to Contractors.
Ratio of Production Employees to Maintenance
Employees.
Maintenance Employees per First Line
Supervisor.
Maintenance Employees per Planner.
Maintenance First Line Supervisors per Planner.
Stores/Maintenance Parts
Management Indicators.
The use of
indicators to reflect the storeroom's ability to provide high availability
of parts as required at the optimal cost is essential. The following
indicators can be used:
Inventory Accuracy and Frequency.
Percentage of Stock-outs.
Inventory Turnovers,
Percentage of Inactive Inventory.
Materials versus Labor Ratio.
Percentage of Growth of Line Items.
Percentage of Growth in Number of Suppliers.
MRO Value as a Percentage of Plant Replacement
Values.
Routine Maintenance
Indicators.
The
following indicators can be used to evaluate the consistency in performance
of maintenance activities. To adhere to good maintenance practices as
reflected by these indicators, expect positive results financially and in
equipment performances. Examples are:
Work Input Level (By Craft, Priority and Type).
Backlog Level (By Craft, Priority and Type).
Standing Work Orders as Percentage of Total
Hours.
Man Hours per Work Order.
Daily Schedule Completion.
PM Completion.
PM Expense as a Percentage of Total Maintenance
Expense.
Work Generated Per PM/PdM Task.
Percentage of Maintenance Rework.
Percentage of Overtime and Total Callouts.
Percentage of Emergency Work.
Equipment Performance
Indicators
The
Equipment Performance Indicators are the most valuable of all the
indicators, as they alone will reflect the "actual value of the
plan" and employee activity successes or failures. These measures
specifically focus upon reliability, cost of critical equipment or the cost
of manufacturing lines.
Overall Equipment Effectiveness (OEE)
Equipment Downtime
Equipment Capacity, Utilization, Running Speed
or Performance Efficiency.
Mean Time Between Failure (MTBF) for Pumps,
Motors, Compressors, etc.
List of Worst Performing Equipment.
Set-up or Change-over Times.
Start-up and Shut-Down Times.
Monthly Costs for Each Type of Equipment
(Pumps, Motors, Compressors, etc.)
Monthly Costs for Each Asset Center.
Continued Below...
Summary
The measurement of
performance is critical to the organization's plan for success. It has been
often said: "What you measure, is what you get." In all reality
the use of measurement is much more complex, not being simply what is
measured, what is more important is: How it is measured. To achieve success,
integrate these measures into the overall company vision and strategy.
Create a process to insure the indicators are acted upon in an intelligent
and expeditious manner.
With the use of a
cross-functional review team charged to review and evaluate the
maintenance and the manufacturing reliability indicators should include
those in the organization most affected by that action, or those who can
have real impact upon the indicators. Teams will consist of a company wide
equipment operators, craft personnel, first line supervisors and engineers.
Create and use a dialog with a free exchange of ideas, real communication is
most important to remove inhibitions. Then move forward to achieve real
successes.
13. Reliability Centered
Maintenance (RCM).
RCM is the final
stage of maintenance realignment program. RCM totally integrates PM, PdM and
PAM with accountability in each major manufacturing configuration. The total
function of that configuration and how well it is centered in reliability
maintenance is the real measure of success. Each of the assigned equipment
components' within an asset center can be operated with a higher degree of
confidence, resulting in better production forecasting, greater employee
satisfaction and higher profit margins.
Once RCM has been
accomplished, the result will be a Totally Integrated Maintenance (TIM)
approach to problem solving and providing for equipment reliability
improvement. PM, Pdm and PAM must be working together with each established
facet in place and fully functional if RCM is to become successful. When TIM
is achieved the Maintenance Department will become a RCM Department.
Personnel equipped to meet the demands of the World Class Manufacturing
Organization.
Long range
benefits for the Totally Integrated Maintenance department can be far
reaching, included in the benefits are:
1. The overall reduction of equipment emergencies
by as much as 75%.
2. Reduction in maintenance purchasing by as much
as 25%.
3. Improvement of warehouse activities and
warehouse accuracy to as much as 95%.
4. Increasing PM effectiveness by as much as 200%.
Industrial
Maintenance Technology (IMT) is fast becoming an advanced science, where and
whenever implemented/integrated, the RCM Management Plan will work. The plan
does require hard work and dedication. It will be upsetting at first,
ultimately it will aid in the establishment of or in the enhancement of a
World Class Organization in your plant.
Invitation
to Share your 5S or Lean Implementation Success with our Readers, and Get
Rewarded!
About
the author:
TPMonLine acknowledges Bruce C. Hiatt
for this excellent work. Here is his profile in his own words:
Name: Bruce C. Hiatt
Address: Hiatt Engineering Co., 48 W.
Broadway 603N, Salt Lake City, UT 84101
Telephone: (801) 363-2626; FAX (801)
363-2626; Cell (801)673-0283
Position: Consulting Engineer
Email address: hiattbc@comcast.net
I
have been a maintenance practitioner in Facilities and maintenance
Engineering for over 45 years. I spent 20 years (1955 - 1975) in the US
Navy where I receive training as a Mechanical Engineer and as an
Instructor. After retirement, I moved into the private sector as a Plant
Engineer for the Eisenman Chemical Co. Here in Salt Lake City from 1976
- 1983. I then accepted a position where I wrote and taught a course in
Industrial Maintenance Technology at the Salt Lake Community College
from 1983 until 1987. I then served as the Utility Manager at Dugway US
Army Proving Ground, Dugway, UT from 1987 until 1989 I started my
own consulting firm in 1978, the Hiatt Engineering Company. I worked on
projects at Utah State University from 1989 until 1992, I then worked on
projects for Layne environmental Services from 1992 until 1993, I then
worked on a co-generation project at Snowbird Ski Resort from 1993 until
1995. I worked as the Facilities Engineer for the Cephalon Corp. A
pharmaceutical firm from 1995 to 2002. I retired in 2002 but still try
to do consulting work with my own company as time permits.
See his page: http://hiattengineeringltd.com/home
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