Managing Quality Integrating the Supply Chain S. Thomas
FosterChapter 9
To provide a method for coping with the widespread problem of
errorprone processes, Deming developed the PDCA (i.e., Plan, Do,
Check, and Act) cycle, which provides a repeatable and
reproducible, standardized, structured, teambased, factfinding,
problemsolving approach to process improvement and correction using
a set of simple, cost effective, low-tech tools.
R2S2-TFP-IC
Chapter 9
Why would you use a form such as the PDCA Worksheet in
managing improvement projects?
First, the PDCA Worksheet provides for communication, coordination,
collaboration, and control of multiple correction and improvement
projects. Second, this form provides for the codification and
institutionalization of employee knowledge and experience about
improvement and correction projects. Finally, management can input
the data on the worksheet into a computer-based database which can
provide status reports and historical analyses about multiple
correction and improvement projects.
C4-CI-SH
Who should be on the team?
What is the problem?
What is the quantified objective?
How do you characterize the process?
What data are you going to collect?
How are you going to collect the data?
How are you going to analyze the data?
How are you going to identify the root cause or the
improvement?
How are you going to identify the best alternative,
countermeasure?
How are you going to setup a pilot?
How are you going to test the pilot?
TPRQ-CDHA-RIAC-ST
Standardized and Structured
The standardized and structured component means this approach
(i.e., the sequenced set of steps and set of tools) is repeatable
for any specific improvement or correction and the method is
reproducible across all levels and functional areas of an
organization.
Team-based
The teambased component means that management selects six to nine
people from the process to work together as a team to take
advantage of their knowledge and perspectives of the process in
implementing the PDCA cycle according to the standardized
structure. We use the team-based problem solving because we are all
smarter than any one of us. This team can call on upstream and
downstream process personnel and specialists to support their
efforts. The team collaboration will reduce or eliminate the
selective abstractions caused by bounded rationality and bounded
awareness when one person solves a problem.
R2
69-S2
Fact-finding
The factfinding component means that before we start solving the
problem we use a standard set of tools to gather, examine,
organize, question, and integrate the facts into a model to avoid
making decisions based on assumptions, anecdotes, heuristics,
hearsay, opinions and pseudo facts. If we leapfrog the fact-finding
process, we can fail to see the uniqueness of the situation, and we
will anchor on an incorrect diagnosis. This tendency to leap-frog
the fact-finding process is typical of resident “experts” who have
single, unified models which give you solutions that are direct,
simple, obvious, and wrong.
Problem-solving
The problemsolving component means that we use a repeatable,
reproducible, standardized, structured set of tools to generate,
debate, and test alternatives, to decide on an alternative, and to
implement a pilot to learn from experience.
GEOQIM-A2H2OP-LUA-E
R2S2T-GDTD-AP
Chapter 9
What is the purpose of the following steps in the PDCA cycle?
Plan
The purpose of the Plan step is to diagnose the problem and
prescribe a remedy. Diagnosis, factfinding, is accomplished in
steps #1, #2, and #3 on the PDCA Worksheet (i.e., characterize the
process, identify root cause or improvement, find alternatives).
Prescription, problem solving, is accomplished in step #4 (i.e.,
select an alternative as a countermeasure).
Do
The Do step, #5, is concerned with implementing a pilot to test
the
proposed solution.
Check
The Check step, #6, is concerned with determining if the pilot is
successful as defined by the operational definition of success for
the pilot.
Act
The Act step, #7, is concerned with returning to Plan step #1 and
repeating the PDCA cycle if the pilot is unsuccessful or, if the
pilot is successful, proceeding with an expanded, fullscale
implementation and developing new standards, policies, and
procedures.
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© 2007 Pearson Education
Chapter 9
Why should an improvement team not skip any steps in the PDCA
cycle?
If you skip any of the steps, you are likely to be making decisions
based on assumptions, anecdotes, heuristics, hearsay, opinions and
pseudo facts, and it is unlikely that you will eliminate the
problem or improve the process because you will leap-frog the
fact-finding process, you will fail to see the uniqueness of the
situation, and you will anchor on an incorrect diagnosis. This
tendency to leap-frog the fact-finding process is typical of
resident “experts” who have single, unified models which produce
solutions that are direct, simple, obvious, and wrong.
A2H2OP-LUA-E
Chapter 9
Why does the PDCA cycle use an iterative approach symbolized as a
circle?
If you are sailing a boat with the intent to intercept another
continuously moving boat, you periodically recalculate the course
to the continuously moving target. Each time you make the best
calculation you can.
What you don't do is follow your first course calculation without
correction until the original calculation indicates that you have
reached the target, because the target is not there anymore. You
realize that despite your best initial efforts to calculate the
course to the target, the target may be moving in unforeseen ways,
and the currents and winds in which you are sailing may carry you
off the calculated course. You follow the principle of seeking
frequent feedback about your position and the target's position in
relation to your course so you can make fact-based
adjustments.
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© 2007 Pearson Education
Chapter 9
In business, however, people tend to think that they should be able
to develop the correct plan or procedure for meeting business needs
without trial and feedback using pilots or prototypes, without
using “what-if” scenario analyses of their selected plan, and
without generating and exploring alternative plans.
The PDCA principle of iteration gives you a system for continuously
making quick improvements and corrections in a step-by-step way,
doing the best job you can within relatively short improvement
cycles. In that way you can quickly try an improvement or
correction (i.e., pilots or prototypes) and get immediate,
fact-based, feedback regarding how well the improvement or
correction performed. You want to do as little as possible and
learn from experience. You want to fail fast, fail small, and
correct quickly, without making costly errors, by performing a
series of simple improvement or corrections.
We always show the PDCA cycle as a circle to stress the continuous,
iterative nature of improvement and correction. All types of
process improvement and correction require iteration.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
What value does brainstorming add to the team throughout the PDCA
cycle?
We generally believe that humans can be rational problemsolvers. In
other words, a knowledgeable person supposedly, with some effort,
can become aware of all facts and alternatives for solutions and
select the appropriate alternative based on its value relative to
the facts and other alternatives.
However, in many situations, the problem or opportunity under
consideration is sufficiently complicated that one person cannot
comprehend all of the relationships, their interdependencies,
causes, effects, surrounding facts, and possible alternatives for
solutions, and then rank each alternative based on its value
relative to the other alternatives. These constraints do not even
consider situations with conflicting goals and priorities or the
personality, irrationality, hopes, beliefs, values, agendas,
selective abstractions, and expectations of the problemsolver, all
of which further complicate nontrivial decisions.
RC-GP-PI-HBVA-SE
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In summary, one person either cannot think of everything in
nontrivial situations, because of their selective abstractions
caused by bounded rationality and bounded awareness, or does not
want to think of everything because of their personality,
irrationality, hopes, beliefs, values, agendas, and expectations,
or misses the most important goal or priority. This limitation is
reduced in the PDCA cycle by using teams and the brainstorming
technique for generating diverse possibilities at every decision
making point.
With the above qualifications to the rational decision making model
in mind, the statement that only the questions that get asked, get
answered, and only the problems that get recognized, get solved
becomes an important heuristic in process problem solving. Avoid
insular, group-thinking. At the outset, you do not want consensus
and “team players.” You want uncomfortable questions and debate to
dominate. Teambased brainstorming helps to assure that the team
asks the right questions and the team identifies the real problem
and alternatives. Never decide alone – we are all smarter than any
one of us.
© 2007 Pearson Education
© 2007 Pearson Education
a. define an objective
the correction questions
d. make the suggestions visible
e. do not allow criticism or comments about the suggestions
f. do it quickly
h. you can allow anonymous suggestions in a politically
influenced
team
j. clarify the suggestions
Chapter 9
What are the improvement questions you ask to guide team
brainstorming in generating improvement alternatives?
How can we: eliminate manpower to improve the process.
add material
combine methods
change machinery
Chapter 9
What are the correction questions you ask to guide team
brainstorming in generating correction alternatives?
What has changed in: manpower to cause the differences materials
between actual results and
methods specifications
How should we specify operational definitions?
An operational definition should provide communicable meaning to a
concept by specifying the unit of measure, the who, what, when,
where, why, how we measure, how much we measure, and how we respond
to the measurement of a concept within a particular set of
circumstances. Strictly speaking, operational definitions aren't
"tools" in the same sense that flowcharts are. However, they are
the vital underpinning that helps us to use all of the other tools
successfully. Operational definitions provide quantified, explicit
specifications which are not ambiguous.
UW5H3-QES
a. metric – unit of measure
b. criteria – variable we measure
c. test – how we measure
d. response – pass/fail action
Why should teams physically characterize a process before starting
improvement efforts?
The purpose of the physical characterization of the process is to
assure that:
the measurement systems are correct,
the specifications and standards are correct,
the inputs and outputs meet the specifications and standards,
and
the team understands the historical behavior of the process, using
pivot table analyses of the process data, before the correction or
improvement efforts begin.
MS2IOHP
The team physically characterizes the process by:
a. performing gauge studies,
and standards,
and
process data.
Why do we perform gauge studies?
Teams perform gauge studies to assure that the process measurement
devices and the operators using them are accurate. Otherwise, we
could have a biased factfinding process because of unreliable and
inaccurate feedback information.
How do we perform gauge studies?
Teams accomplish these studies by first calibrating the measurement
devices, then comparing the measurements made on a single
characteristic on a single item across all measurement devices to
assure the measurements are repeatable across all devices. Finally,
the team compares the
measurements made by all operators for a single item and
measurement device combination to assure that identical
measurements are reproducible across all operators.
CR2
PDCA Method
Process Characterization
Chapter 9
Distinguish between the actions you take if measurements are not
accurate, repeatable or are not reproducible.
If the measurements are not accurate or are not repeatable across
all devices, then technicians correct the problem with the devices.
If the
measurements are not reproducible across all operators, then the
operators need training. The team should complete any technical
repair on the measurement devices and operator training before the
factfinding process begins.
© 2007 Pearson Education
© 2007 Pearson Education
PDCA Method
Process Characterization
Chapter 9
Why do we reset the process to prescribed specifications and
standards?
You reset the process to prescribed specifications and standards to
assure that the initial starting conditions (i.e., inputs,
activities, connections, pathways, and tests) for the improvement
or correction are correct. You do not want to be correcting or
improving a process based on incorrect inputs, activities,
connections, pathways, or tests. This step is analogous to making
sure you plug the printer into an appropriate receptacle and check
it for paper before you try to find out why it is not operating
correctly.
© 2007 Pearson Education
© 2007 Pearson Education
What is the purpose of the input variance analysis?
The input variance analysis lists and compares information about
the inputs that process personnel expect and get from the upstream
process. The purpose is to identify who is supplying what, when,
where, how, how much, and why to this process. The metrics
used to control the inputs need to be identified. The results
contrast the expectations of process personnel and suppliers to
identify differences and opportunities for improvement.
Crossfunctional teams which include members from upstream processes
can use specifications and standards and brainstorming to complete
the input expectation sheet. The team needs to correct the
variances before proceeding with process improvements or
corrections.
W5H2E
What is the purpose of the output variance analysis?
The output variance analysis lists and compares information about
the product or service that process customers expect and get from
the process. The purpose is to identify who is receiving what,
when, where, how, how much, and why from this process. The metrics
used to control the outputs need to be identified. The results
contrast the expectations of process personnel and process
customers to identify differences and opportunities for
improvement.
Crossfunctional teams which include members from downstream
processes can use specifications and standards and brainstorming to
complete the output expectation sheet. The team needs to correct
the variances before proceeding with process improvements or
corrections.
W5H2E
What is the difference between a variance and variability?
A variance is the gap between "what is" and "what should be." The
team can use the input and output variance analyses to reveal
variances. Any quality gap is a variance and an opportunity for
correction or improvement.
A variance is different from variability. Every process produces at
least some random variability. If that variability is within
specifications, then that natural variability is not necessarily a
quality gap. A variance is something that does not meet the
process's target specifications or the customer's target
specifications.
© 2007 Pearson Education
© 2007 Pearson Education
PDCA Method
Process Characterization
Chapter 9
Why does the team perform pivot table analyses during the process
characterization step?
The purpose of pivot table analyses is to help the team to identify
the scope of the improvement or correction. You are trying to
define which part of the organization, organizational categorical
variables, and which part of the process, operational categorical
variables, the team should focus upon in an improvement or
correction project.
Pivot table analyses can help to describe who, what, when, where,
how, and how much of the improvement or correction. Pivot table
analyses are a rough cut of the process information to locate your
problems.
SO2-W4H2
Chapter 9
Why do we use the Is/Is-Not matrix to help diagnose a
problem?
You use the Is/Is-Not Matrix analysis to help you locate the exact
point in the process, with regard to the operational categorical
variables, which are causing the differences you need to correct
when you do not have computer-based data about the operational
categorical variables.
The Is/IsNot matrix stratifies data about process variation to
expose underlying patterns in the operational categorical
variables. Discovering such patterns helps to localize a problem,
making it easier to diagnose the cause of the problem.
LO-SPEO
Chapter 9
Chapter 9
How do you setup the Is/Is-Not matrix?
a. First, the team needs to identify the specification of
concern.
b. Next, the team needs to provide answers to the following
questions:
1. Who is performing the operation when the variance occurs? Who
is
performing the operation when the variance does not occur?
2. What product/service has the variance? What product/service
does
not have the variance?
3. When does the variance occur? When does the variance not
occur?
4. Where does the variance occur? Where does the variance not
occur?
5. What method (operation) is used when the variance occurs?
What method (operation) is used when the variance does not
occur?
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
These answers will be the symptoms of the problem situation (i.e.,
the Is column for variance) and the symptoms of the normal
situation (i.e., the Is Not column for no variance) across five
dimensions. These two sets of facts opposite each of these
dimensions describe precisely the attributes of the situation when
you have a variance, the Is column, and the attributes of the
situation when you do not have a variance, the Is Not column.
The Is column is completed with only those facts directly affected
by the problem, and the Is Not column will be completed with the
facts that are closely related to the problem but not affected by
the problem.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
The specification of the facts as either Is or Is Not will separate
the problem from everything that Is Not the problem. This process
draws a tight line around the problem, to describe it precisely,
define the scope, and provide clues about the cause of the problem.
This process also limits the amount of information needed for the
solution. There is no need to get all of the facts, only the
relevant facts.
c. Third, the team needs to identify the differences between the
problem situation and normal situation. Whatever caused the problem
produced only those effects in the Is column. If there are one or
more differences between the Is and Is Not column, then these
differences will lead to the cause of the problem.
d. Fourth, the team needs to identify what has changed in the
process (i.e., manpower, materials, methods, machinery, feedback,
environment, time, and technology) that can cause these
differences. If the process was running correctly, then something
has changed.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
In using pivot tables and the Is/Is-Not matrix, why should teams
identify differences between the problem situation and the normal
situation?
We have a tendency to leap-frog the fact collection process, ignore
the uniqueness of the situation, and to anchor on an incorrect
diagnosis. The purpose of the pivot table and the Is/Is Not matrix
is to have the teams think in terms of differences before thinking
in terms of similarities with regard to their past
experience.
This approach avoids attribute error (i.e., misclassification)
which is caused by equifinality (i.e., multiple causes can have
some of the same effects and multiple effects can have some of the
same causes).
Jumping to conclusions anchored on intuition and hunches (i.e.,
flawed pattern matching using assumptions, anecdotes, heuristics,
hearsay, opinions, and pseudo facts) is natural and is effective
when equifinality does not exist. However, flawed pattern matching
occurs when process “experts” use single unified models which give
answers that are direct, simple, obvious, but wrong because
equifinality exists.
DSAE-FPM-A2H2OP
Chapter 9
“Experts” and the rest of us use our single unified models most of
the time successfully. However, when you have unrecognized
uniqueness and equifinality, you will likely commit attribute
error, because your single unified model is based on a flawed
hidden assumption that the situation is the same as the past (i.e.,
treating different things the same).
Remember: It’s not what we don’t know that hurts us. It’s what we
know that ain’t so (i.e., hidden assumptions).
Teams have a tendency to quickly see how a problem situation is
similar to other situations in their experience (i.e., anchoring on
the most recent or available similar experience) and then to judge
this situation as they correctly did with the similar situation(s).
They hear hoof beats and they think horses. They don’t see the
zebra.
Their hidden assumptions cause them to leap-frog the fact
collection process, ignore the uniqueness of the situation, and to
incorrectly diagnose the problem.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Attribute error caused by equifinality frequently affects diagnoses
by experts. For example, approximately 15% of all diagnoses by
medical doctors are wrong because of attribute error. Also, medical
doctors have approximately 20-30% inter-observer variance and a
20-30% intra-observer variance. This means that 20-30% of the
diagnoses by two different doctors for the same patient will be
different (inter-observer variance). And 20-30% of the diagnoses by
the same doctor for the same patient will be different
(intra-observer error). And these professionals complete 4 to 12
years in graduate studies and internships to master their
specialties.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
As stated above, when we use single unified models anchored on
flawed hidden assumptions, we are ignoring the uniqueness of a
situation. When teams hear hoof beats they think horses, and they
do not see the zebras. The zebras indicate the situation is unique
and different. Look carefully for the zebra (i.e., the
uniqueness).
Finally, completing the columns in the Is/Is Not matrix will
prevent the teams from treating different things the same or
treating the same things differently and will require them to
translate their opinions into facts.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
In using pivot tables and the Is/Is-Not matrix, what should the
team do if the team finds differences between the problem situation
and the normal situation?
The team needs to go to the physical location of the problem and
observe the process to identify possible changes that could create
the differences in the facts between the IS and IS NOT columns. Do
not rely on reports, interviews, surveys, aggregated or transaction
data, or statistics. Go see it for yourself.
RISDS
Chapter 9
In using the Is/Is-Not matrix, how do you confirm that the cause
you find when you go see the problem is the actual cause?
The cause must explain all of the differences in the Is/Is-Not
matrix. If the process was running correctly before the problem was
detected, then one or more factors (i.e., manpower, materials,
methods, machinery, feedback, environment, timing, technology) have
changed in the process to cause the problem. If a change fails to
explain all the differences, then it will not be the actual cause.
The actual cause will produce exactly all the facts in the IS
column and will explain the differences in those facts and the
facts in the IS NOT column. If you do not check a possible cause
this way, you may be taking action on something that is not the
cause at all.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
In using the Is/Is-Not matrix, what should the team do if the team
cannot find any differences between the problem situation and the
normal situation?
If you cannot find any difference between the problem situation and
the normal situation, then you need to check your variance
specification, your measurement systems, your data collection
systems, and your analyses and reporting systems. If the process
was running within specifications and is now not running within
specifications, one or more of the factors (i.e., manpower,
materials, methods, machinery, feedback, environment, timing, and
technology) had to change. If the Is/Is-Not matrix does not show
differences in who, what, when, where, how, and how much, then you
have errors in the variance, measurement, data collection,
analyses, and reporting processes you used to implement the
Is/Is-Not matrix.
Once you have corrected the information systems, you have to repeat
the process. Specify your Is/Is-Not matrix again.
VMDAR2
Chapter 9
What is the relationship between changes in the process and
differences in the Is/Is-Not matrix?
If there is a change in process behavior, there has to be at least
one difference between the Is and the Is Not columns (i.e., who,
what, when, where, how, and how much), and there has to be at least
one change in the factors (i.e., manpower, materials, methods,
machinery, feedback, environment, timing, and technology) that
works through this area of difference to cause the problem.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
What is the purpose of the “as is” process flow diagrams?
Process flow diagrams describe the way in which work "flows"
through a process. The purpose of the “as is” process flow diagrams
is to provide a single picture of the process that the whole team
can view and confirm before beginning process improvement (i.e.,
everyone should be on the same page). A picture is worth a thousand
words. Trying to get a team to understand and agree on a written
description of the process would bottleneck the improvement
process.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
How do you prepare “as is” process flow diagrams?
Anyone who knows about the process should be involved on the team
preparing the “as is” process flow diagram. Use brainstorming and
complete the process flow diagram by asking who, what, when, where,
how (i.e., the method), and how much about manpower, materials,
methods, machinery, feedback, environment, timing, and technology
for each input, activity, connection, pathway, test, and output.
You want to annotate your diagram with boxes noting any
non-value-added time, just-in-case buffers, and waste. Finally, you
want to note any variances from specification and standards.
B-W4H2-M4FET2-IACPTO-WNJV
Chapter 9
The following types of questions are representative of those you
need to ask to prepare the “as is” process flow diagram.
1. Where does the input for this operation come from?
2. How does the input get to this operation?
3. Is the input ever delayed during its movement to this
operation?
4. Where and for how long is the input stored before it is
used?
because of exceptions?
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
7. What decisions are necessary in this operation?
8. What tests are performed on the output for this operation?
9. What happens if the output is out of tolerance or
incorrect?
10. Who makes the decision?
11. What happens if the decision is "yes" or "no"?
12. Where is the output from this operation stored and for
how
long?
14. How does the output get to the next operation?
15. Is the output ever delayed during its movement from this
operation?
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Give an example of a system of symbols you can use to diagram the
flows in a process?
Any system of symbols to represent the process is acceptable if you
use it consistently because it is the understanding you gain from
preparing the process flow diagram that is important, not the
format. One system is to use:
1. diamonds for decisions;
2. lines with arrows for material flows (inputs and
pathways);
3. dotted lines with arrows for information flows
(connections);
4. circles for activities;
6. boxes with labels describing waste, non-value-added time,
just-in-case
buffers, and variances.
If there is more than one output arrow out of an activity circle, a
decision diamond may be required. Finally, make sure every decision
diamond has one line entering it and at least two lines leaving
it.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
How do you prepare a “should be” process flow diagram for improving
a process?
You evaluate the process to support process improvement with the
following procedure:
1. you begin with the process "as is" flow diagram in the
physical characterization step;
2. you refine the flows to reduce or eliminate waste,
non-value-
added, just-in-case buffers, and variances from
specifications and standards:
3. you redraw the process flow diagram integrating the
results from step 2 to show the process as it "should be."
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
What is the typical ratio between throughput time and value-added
time?
When you first examine the activities in a process using a process
flow sheet, you may be surprised to see that the material or
service, as it flows through the process, spends more time waiting
(approximately 90% of the through-put time) than in actual
operations. A great deal of waste in processes is in delays because
of bottlenecks. Value-added time consumes only 10% of the
throughput time. The typical ratio between throughput time and
value-added time is 10:1.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
What is the objective of process improvement flow analyses?
The objective of process improvement analyses is to achieve an
interruptionfree, continuous, linear, level, one-piece flow of 100%
valueadded operations producing 100% yield with 100% utilization
which exactly matches the mix, volume, and timing of customer
demand. You will never achieve this objective. But if you
consistently can get closer to this objective than your
competitors, you will own your market.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Multi-voting, the Ben Franklin Balance Sheet, and Bracket
Elimination are useful in situations where the team produces more
than two or three alternatives in their brainstorming
session.
Describe the procedure used in generating and evaluating the
alternatives for improvements and corrections?
The team evaluates the proposed correction or improvement using the
following procedure.
1. First, the team brainstorms for alternatives.
2. Second, the team uses Multi-voting to reduce the number of
alternatives to
6 or less.
3. Third, the team uses the Ben Franklin Balance Sheets for each
alternative
retained from the multi-voting process.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
4. Fourth, the team uses the Bracket Elimination technique to
reduce
the alternatives to one.
5. Fifth, the team assures the selected alternative will not
require too
much time to implement, too much project cost, and will be
accepted
by the operators.
6. Sixth, the team evaluates the selected alternative with regard
to
quality, reliability, cycle time, and cost.
With regard to quality, reliability, cycle time, and cost, if
quality is the
problem and it is not improved, then the alternative obviously does
not
solve the problem. Next, the alternative must be reliable or, in
other
words, stable and consistent over time. Third, the alternative must
be
efficient with respect to cycle time. Finally, the alternative must
be cost
effective for the product or service.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
In summary, first you go through the Brainstorming, Multi-voting,
Ben Franklin Balance Sheets, and Bracket Elimination procedures.
Then, if you have the time to do it, the total cost of the
correction or improvement is reasonable, and the operators accept
it, the team needs to evaluate the alternative with further, more
finegrained analyses with respect to quality, reliability, cycle
time, and cost effectiveness. This matrix carefully eliminates the
obvious and moves the team to a more finegrained investigation of
the proposed alternatives that remain.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Chapter 9
Why do we use Multi-voting?
We need a democratic method for reducing the number of alternatives
produced by the brainstorming session to a reasonable number for
evaluation. If the team produces more than six alternatives in the
brainstorming session, the team uses multi-voting after the
brainstorming session for countermeasures to reduce a long list of
alternatives to six or less alternatives.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
a. list the alternatives
b. everyone votes for one-half plus one of the alternatives
c. eliminate the alternatives not receiving a vote
d. repeat the voting process until you have 6 or less
alternatives left
For example, assume the team brainstorming session produced 16
alternatives. On the first round of voting, everyone on the team
would vote for one-half plus one of the total number of
alternatives or 9 alternatives. If 10 alternatives remain after the
first round of voting, then on the second round of voting, everyone
on the team would vote for 6 alternatives. This process continues
until 6 or less alternatives remain.
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© 2007 Pearson Education
Chapter 9
Why do we use the Ben Franklin Balance Sheet?
We need a visible, democratic method for evaluating the
alternatives retained from the Multi-voting session. Once the team
has reduced the alternatives to six or less, the team displays each
alternative and draws a T-chart beneath each alternative. The left
side is for the advantages (i.e., assets) and the right side is for
the disadvantages (i.e., liabilities). The team then brainstorms
about advantages and disadvantages for each alternative.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Why do we use the Bracket Elimination technique?
We need a visible, democratic method for selecting the best
alternative. This is the same paired comparison method used to
eliminate all teams down to two teams in sports. The team divides
the alternatives into pairs, and then the team selects a winner
from each pair. The team then pairs these winners and selects a
winner from these pairs. Finally, the team has reduced the
competition to two alternatives and the team selects the winner
between these two remaining alternatives.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
How do you prepare for the implementation of a pilot?
To prepare for the implementation of a pilot, the team needs to
prepare:
1. a cost/benefit analyses,
2. an action plan for implementing and testing the pilot,
3. indicator design checklist,
4. process score sheet,
5. an operational definition for success of the pilot project
(i.e.,
metric, criteria, test, response), and
6. a presentation checklist.
These steps are necessary to support the implementation and testing
of the proposed countermeasure in the pilot.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Why should teams use cost/benefit analyses?
Cost/benefit analyses simply identify the current costs, projected
costs, projected savings, actual costs, and actual savings of the
activities affected by a correction or improvement project to help
in measuring the cost effectiveness of the countermeasure. This
tool is used by the team to costjustify their proposed
countermeasure to management and then to confirm the
projected
costjustification after the pilot is accomplished and a fullscale
implementation of the countermeasure is being considered.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Chapter 9
Why should teams prepare action plans?
The team action plan ensures that all elements of your pilot of the
proposed countermeasure are considered.
The basic questions of who, what, when, where, when, why, how, and
how much are asked and answered about each of the steps the team
must perform to execute the pilot, and are assembled in a matrix
format.
With a visible team action plan, members of the team can
participate in the design and implementation of the solution,
thereby gaining commitment. This tool provides a basis for review
and suggestions by higher level teams before implementation takes
place.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
How does the team prepare a team action plan?
The team develops the action plan on flip charts using the
following four steps:
1. Using brainstorming, the team members generate a draft of the
team action plan by listing all actions, with their affected
operations, people, objectives, and required resources without
comment or criticism, and the team records these actions in the
basic team action plan on a flip chart.
2. After the brainstorming session is completed, the team clarifies
and confirms each of the actions, operations, people, and
resources.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
3. Then the team revises the draft action plan and lists the
actions
chronologically as milestones.
4. The team then answers the questions who, what, when, where,
how,
how much, and why about each of the actions.
The team can post the action plan in a visible place so that the
team members can easily monitor the project’s progress.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Chapter 9
Why should teams use indicator design checklists and process score
sheets?
The team uses indicator design checklists and process score sheets
as aids in developing and monitoring process control and process
performance indicators. Process control and process performance
indicators help your team keep score on the process during the
pilot and the fullscale implementation that follows a successful
pilot. You must specify who, what, when, where, how, how much, and
why for each of the process control and performance
indicators.
The team can first brainstorm to generate a list of process control
and performance indicators. Then the list can be reviewed,
clarified, and pared down to the "vital few" that are critical to
the process's success.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Chapter 9
Chapter 9
What is the difference between process control and process
performance indicators?
Process control indicators keep track of the vital signs of a
process as it is operating. The team should select process control
indicators at process leverage points where the team can achieve
the greatest amount of control. We call these types of indicators
process lever variables.
Process performance indicators are targets that represent the
outputs of the process. The process control and performance
indicators are specifications.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Why should teams prepare presentation checklists?
You might need to present your proposed improvement project to a
management team for approval and funding. You can enhance or
jeopardize the worth of everything you have done with your
presentation.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
What are the components of a presentation checklist?
1. Arrange for the presentation room to be the right size with the
right
atmosphere and audio visual equipment.
2. Decide who the key decision makers are and evaluate their
vested
interests in the improvement or correction project.
3. Mark your various flip charts and slides with notes as to how
the
action plan affects each of these vested interests.
4. Invite the key decision makers to the presentation and get
confirmation that they will attend.
5. Assign presentation responsibilities.
6. At the presentation speak clearly and slowly. Listen to
questions
carefully; they tell what you what to stress in the
presentation.
Summarize recommendations simply and clearly.
If management approves the pilot implementation, then the team
implements the pilot.
© 2007 Pearson Education
© 2007 Pearson Education
Chapter 9
Describe the Check step.
In the check step, you use the operational definition for success
of the pilot project (i.e., metric, criteria, test, response) to
determine if the correction or improvement is a success.
In the Act step, what is the next step for the team if the pilot is
a success or if the pilot is not a success?
If the pilot is a success, then the team can proceed with fullscale
implementation of the solution. If the pilot is not a success, then
the team returns to step #1.
But this next iteration through the PDCA cycle will utilize the
facts and experience gathered from the first iteration of the
cycle. Therefore, the team will be gathering facts only to fill
gaps revealed by the pilot and focusing on causes and alternatives
that are relevant to the experience gained from the pilot.
© 2007 Pearson Education