Section C: Quality and Continuous Improvement Flashcards

1
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Total Quality Management, TQM

A

Total Quality Management, TQM A term coined to describe Japanese-style management approaches to quality improvement. Since then, total quality management (TQM) has taken on many meanings. Simply put, TQM is a management approach to long-term success through customer satisfaction. TQM is based on the participation of all members of an organization in improving processes, goods, services, and the culture in which they work.

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2
Q

Define Quality & The 5 Principal Approaches

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Quality Conformance to requirements or fitness for use. Quality can be defined through five principal approaches: (1) Transcendent quality is an ideal; a condition of excellence. (2) Product-based quality is based on a product attribute. (3) User-based quality is fitness for use. (4) Manufacturing-based quality is conformance to requirements. (5) Value-based quality is the degree of excellence at an acceptable price.

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3
Q

What are the two major components of Quality?

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Quality has two major components: (1) quality of conformance—quality is defined by the absence of defects, and (2) quality of design—quality is measured by the degree of customer satisfaction with a product’s characteristics and features.

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4
Q

Transcendent Quality

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Transcendent quality. This is what most people think of when asked to define quality, but it is actually very difficult to define precisely and involves opinions.

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5
Q

Product-based quality

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Product-based quality. This relates to the grade of the product, for example, a low-cost item or a luxury version with many features. The design should fit the targeted customer segment and organizational strategy for sales volumes. Even low-grade items can be high quality by the other definitions.

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6
Q

User-based Quality

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User-based quality. This is the user’s expectations of how a product should perform, its features, its aesthetics, its conformance to specifications, and its services (e.g., speed, consistency, availability, and competence of services). It will also be based on other elements, such as warranty, price, and perceived quality. From a performance perspective, this includes the following subsets: Reliability. This is performance consistency and how long the unit lasts. Durability. This is resistance to wear and tear. Maintainability. This is the ability to repair the unit if it fails.

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7
Q

Manufacturing-based Quality

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Manufacturing-based quality. This is conformance to requirements and quality of conformance, as noted earlier, and is a manufacturing responsibility.

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8
Q

Value-based Quality

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Value-based quality. This is value for the money and is relative to the competition and perceptions. Perceptions can be influenced by marketing and branding.

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9
Q

Cost of Poor Quality

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Cost of poor quality : The costs associated with performing a task incorrectly and/or generating unacceptable output. These costs would include the costs of non-conformities, inefficient processes, and lost opportunities.

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10
Q

Quality Costs

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Quality costs : The overall costs associated with prevention activities and the improvement of quality throughout the firm before, during, and after production of a product.

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11
Q

What are the two categories of Quality Costs?

A

The 2 categories of Quality Costs are (1) Cost of Failure (2) Costs of Controlling Quality

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12
Q

What are the two types of Cost of Failure?

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Cost of Failure can be external or internal. External failure costs : The costs related to problems found after the product reaches the customer. This usually includes such costs as warranty and returns. Internal failure costs : The cost of things that go wrong before the product reaches the customer. Internal failure costs usually include rework, scrap, downgrades, reinspection, retesting, and process losses. Because it impacts the customer, external failures are more significant & expensive.

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13
Q

Field Service

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Field service The functions of installing and maintaining a product for a customer after the sale or during the lease. Field service may also include training and implementation assistance.

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14
Q

Quality Control

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Quality Control is the process of measuring quality conformance by comparing the actual with a standard for the characteristic and taking corrective actions on the difference.

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15
Q

The cost of controlling quality includes appraisal costs and prevention costs. Define each.

A

The two costs of controlling quality: Appraisal costs include costs for inspections, calibration of equipment, product testing, and quality audits. While necessary to some degree, recall that lean considers these to be a form of waste, because perfect-quality goods should not need inspection. Prevention costs include the costs caused by improvement activities that focus on the reduction of failure and appraisal costs. Typical costs include education, quality training, and supplier certification. According to TQM, these should be prioritized.

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16
Q

What is the primary objective of TQM?

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The primary objective of TQM is to ensure the organization’s long-term success through customer satisfaction. As it applies to the products and services provided to the customer, this objective can be translated as meeting all required product and service specifications. Another objective of TQM is to ensure that variation is minimized to the degree possible (tall and narrow bell curves) given the nature of the process, the costs involved in increasing precision, and the needs of the customer for precision.

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17
Q

What are the 4 core concepts of TQM? Define each.

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TQM 4 Core Concepts 1. Management Champions - Management must champion the effort and develop organizational strategy, mission statements, and vision statements in ways that inspire a sustained effort toward desired levels of quality. 2. Performance Measurement - Estimates need to be made of how much of the change in customer loyalty and customer satisfaction can be attributed to quality versus investments in marketing, changing tastes, environmental factors, and so on. 3. Involvement and Empowerment - everyone needs to commit not only to doing their jobs well but also to improving their jobs. 4. Focus on the Customer - Customers can be internal or external, meaning that a customer by this definition is simply someone who uses your outputs as inputs to their own processes.

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18
Q

Customer needs include what 7 things?

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The 7 Customer Needs: 1. Quality 2. Flexibility (agility), meaning the ability to be flexible in quantity, delivery, capacity, or specifications as well as adaptable to changing requirements and environments 3. Dependability (resilience) 4. Service 5. Speed (Lead time) 6. Stability (meaning low variability in specifications or performance measures) 7. Cost

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19
Q

Quality Function Deployment (QFD)

A

Quality Function Deployment (QFD) A methodology designed to ensure that all the major requirements of the customer are identified and subsequently met or exceeded through the resulting product design process and the design and operation of the supporting production management system. QFD can be viewed as a set of communication and translation tools. QFD tries to eliminate the gap between what the customer wants in a new product and what the product is capable of delivering. QFD often leads to a clear identification of the major requirements of the customers. These expectations are referred to as the voice of the customer (VOC).

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20
Q

Value Analysis

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Value Analysis The systematic use of techniques that identify a required function, establish a value for that function, and finally provide that function at the lowest overall cost. Focuses on the functions of an item rather than the methods of producing the present product design.

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21
Q

Voice of the Customer (VOC)

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VOC Actual customer descriptions in words for the functions and features customers desire for goods and services. In the strict definition, as related to quality function deployment (QFD), the term customer indicates the external customer of the supplying entity.

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22
Q

House of Quality

A

House of Quality A structured process that relates customer-defined attributes to the product’s technical features needed to support and generate these attributes. HOQ is part of the quality function deployment (QFD) process and forces designers to consider customer needs and the degree to which the proposed designs satisfy these needs.

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23
Q

What are the House of Quality 6 Processes?

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The HOQ technique achieves by means of a six-step process: (1) identification of customer attributes; (2) identification of supporting technical features; (3) correlation of the customer attributes with the supporting technical features; (4) assignment of priorities to the customer requirements and technical features; (5) evaluation of competitive stances and competitive products; and (6) identification of those technical features to be used (deployed) in the final design of the product.

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24
Q

Basic Seven Tools of Quality (B7)

A

Basic Seven Tools of Quality (B7) Tools that help organizations understand their processes in order to improve them. The tools are: 1. the cause-and-effect diagram (also known as the fishbone diagram or the Ishikawa diagram), 2. check sheet, 3. flowchart, 4. histogram, 5. Pareto chart, 6. control chart, and 7. scatter diagram.

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25
Q

Check Sheet

A

Check Sheet A simple data-recording device. The check sheet is designed by the user to facilitate the user’s interpretation of the results… *Check sheets are often confused with data sheets and checklists. Check sheets are used to record the number of times a particular type of event occurs.

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26
Q

Pareto chart

A

Pareto chart A bar graph that displays the results of a Pareto analysis. It may or may not display the 80-20 variation, but it does show a distinct variation from the few compared to the many. Regardless of the precise number of causes, the first one or two of these causes would be called “the significant few” in Pareto terminology. The remaining number would be called “the trivial many.”

27
Q

Cause-and-Effect Diagrams

A

Cause-and-Effect Diagrams A tool for analyzing process dispersion. It is also referred to as the Ishikawa diagram (because Kaoru Ishikawa developed it) and the fishbone diagram (because the complete diagram resembles a fish skeleton). The diagram illustrates the main causes and subcauses leading to an effect (symptom). The purpose of the diagram is to brainstorm possible root causes of a symptom.

28
Q

In a Fishbone diagram (Cause & Effect diagram), these categories of causes to explore are commonly used because they are fairly comprehensive in terms of the possible sources of variation in a process. What are they?

A

Cause & Effect Categories (Bones of the Fish Bone diagram) 1.Environment (dust, temperature changes, humidity, lighting) 2.People (operator training, level of experience) 3.Materials (poor-quality or highly variable materials) 4.Measurement (miscalibrated tools giving the wrong result consistently or wide variation in measurements; the wrong things being measured) 5.Methods (flawed process steps or flow between steps) 6.Machine (poorly maintained equipment or the wrong equipment)

29
Q

Define Flowchart & Process flow diagrams

A

Flowchart : The output of a flowcharting process; a chart that shows the operations, transportation, storages, delays, inspections, and so on related to a process. Flowcharts are drawn to better understand processes. Process flow diagram : A graphical and progressive representation of the various steps, events, and tasks that make up an operations process. Provides the viewer with a picture of what actually occurs when a product is manufactured or a service is performed. Studying flowcharts might reveal ways to improve a process. For

30
Q

Histograms

A

Histograms A graph of contiguous vertical bars representing a frequency distribution in which the groups or classes of items are marked on the x axis and the number of items in each class is indicated on the y axis. The pictorial nature of the histogram lets people see patterns that are difficult to see in a simple table of numbers.

31
Q

Statistical Process Control (SPC) and Control Charts

A

Statistical Process Control (SPC) and Control Charts The application of statistical techniques to monitor and adjust an operation. Often used interchangeably with statistical quality control, although statistical quality control includes acceptance sampling as well as statistical process control.

32
Q

Process capability

A

Process capability The ability of the process to produce parts that conform to (engineering) specifications. Process capability relates to the inherent variability of a process that is in a state of statistical control.

33
Q

Tolerance

A

Tolerance allowable departure from a nominal value established by design engineers that is deemed acceptable for the functioning of the good or service over its life cycle.

34
Q

Describe the two types of specification limits

A

Lower and upper specification limits (LSL and USL) are set by the customer and/or engineering and are product specifications. These specifications are independent of the process used to produce them, so the results are what counts, not how you got there. These are sometimes called the voice of the customer. Lower and upper control limits (LCL and UCL) are set by statistical observations of standard deviations and are process specifications. These determine the degree to which the process is capable of producing results that are within specifications. These are sometimes called the voice of the process.

35
Q

Spread

A

Variability of an action. Often measured by the range or standard deviation of a particular dimension.

36
Q

What Greek symbol represents a standard deviation?

A

The Greek symbol σ (sigma) is used to represent a standard deviation. Standard deviations indicate the likelihood of where a result will fall under the curve. A result will fall within: -One standard deviation (1 SD or 1σ) of the average 68.3% of the time -Two standard deviations (2 SD or 2σ) of the average 95.4% of the time -Three standard deviations (3 SD or 3σ) of the average 99.7% of the time.

37
Q

What are two types of variation?

A

Common causes (random causes) : Causes of variation that are inherent in a process over time. They affect every outcome of the process and everyone working in the process. Assignable cause (special cause) : A source of variation in a process that can be isolated, especially when its significantly larger magnitude or different origin readily distinguishes it from random causes of variation.

38
Q

Random Variation

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Random Variation “a fluctuation in data that is caused by uncertain or random occurrences.”

39
Q

Control Chart

A

Control Chart A SPC tool which is a graphic comparison of process performance data with predetermined computed control limits. The process performance data usually consists of groups of measurements selected in the regular sequence of production that preserve the order. The primary use of control charts is to detect assignable causes of variation in the process as opposed to random variations.

40
Q

What are 2 types of control chart?

A

-X bar chart for the sample mean An xbar control chart will show the population mean at the center and the control limits at the top and the bottom. -R-chart for the range of variation in the samples The range represents the highest reading minus the lowest reading for the specification, so it is basically a method of showing the range of variation that exists in the samples.

41
Q

Control limit

A

Control limit A statistically determined line on a control chart (upper control limit or lower control limit). If a value occurs outside this limit, the process is deemed to be out of control. Unlike the specification limits discussed earlier, these limits are established by statistical observation of variability.

42
Q

Scatter Chart

A

A graphical technique to analyze the relationship between two variables. Two sets of data are plotted on a graph, with the y axis used for the variable to be predicted and the x axis used for the variable to make the prediction. The graph will show possible relationships (although two variables might appear to be related, they might not be—those who know most about the variables must make that evaluation).

43
Q

Root Cause Analysis

A

analytical methods to determine the core problem(s) of an organization, process, product, market, and so forth.

44
Q

Five Whys

A

Five Whys The common practice in total quality management is to ask “why” five times when confronted with a problem. By the time the answer to the fifth “why” is found, the ultimate cause of the problem is identified.

45
Q

Benchmarking

A

Benchmarking Comparing products, processes, and services to those of another organization thought to have superior performance. The benchmark target may or may not be a competitor or even in the same industry.

46
Q

What are the Benchmarking steps?

A

Benchmarking steps? 1. Choose a process to be improved. 2. Select a benchmark organization, functional area, or standard. 3. Evaluate the benchmark target. 4. Compare the organization’s process to the benchmarked process.

47
Q

Six Sigma

A

Six Sigma A methodology that furnishes tools for the improvement of business processes. The intent is to decrease process variation and improve product quality.

48
Q

Lean Six Sigma

A

A methodology that combines the improvement concepts of lean and six sigma. It uses the seven wastes of lean and the DMAIC process from six sigma, and awards recognition of competence through judo-style belts.

49
Q

Objectives of Six Sigma

A

Objectives of Six Sigma The objectives of six sigma are to provide high customer satisfaction and to achieve low product return rates by systematically reducing variation in all manufacturing and business processes to no more than 3.4 defects per million opportunities. This number—3.4 defects per million—is based on six sigmas (standard deviations) in each direction from the mean of a process. Six standard deviations in each direction from the mean is 99.999 percent of all opportunities for an error.

50
Q

Six Sigma Methodology

A

Six Sigma Methodology six sigma is evidence-based, meaning that organizations need to develop more precise ways of measurement to align with their much higher goals for process improvement. Six sigma has three levels of training for persons who work on six sigma problem-solving projects: Master Black Belts, Black Belts, and Green Belts.

51
Q

What are the major concepts of Six sigma?

A

Six sigma has the following major concepts: -Begin with the customer’s needs in mind. -Variation is the cause of defects. -The output of any process is a function of its inputs.

52
Q

DMAIC

A

A six sigma improvement process composed of five stages: (1) Determine the nature of the problem. (2) Measure existing performance and commence recording data and facts that offer information about the underlying causes of the problem. (3) Study the information to determine the root causes of the problem. (4) Improve the process by effecting solutions to the problem. (5) Monitor the process until the solutions become ingrained.

53
Q

What is the preliminary step to DMAIC?

A

Preliminary step to DMAIC? Recognition means that there is evidence of variation in the output of a process. This

54
Q

The 5 steps of DMAIC

A

The 5 steps of DMAIC 1. Define. Define starts with the customer, identifying the customer’s problems caused by the variation in output. It also involves defining the process and its elements and outputs. Finally, it involves defining improvement goals along with the monetary or other benefits that promote investing in the project. 2. Measure. Measure the process and collect all data needed to understand the process. 3. Analyze. Determine correlation or cause-and-effect between the variation and the waste that the variation creates and how it contributes to the customer’s problem. 4. Improve. Plan an improvement project that will address the customer’s problem and minimize variations in the process that lead to the problem. Implement the project. 5. Control. Control the process to ensure that the improvements last over the long term.

55
Q

What are the final steps after DMAIC?

A

After DMAIC, two other steps are sometimes added, Standardize and Integrate. Standardize involves documenting the process and training operators to ensure that it becomes the new standard. Integrate involves implementing the process change.

56
Q

Continuous Improvement

A

Continuous Improvement The act of making incremental, regular improvements and upgrades to a process or product in the search for excellence.

57
Q

continuous process improvement (CPI) ,

A

A never-ending effort to expose and eliminate root causes of problems; small-step improvement as opposed to big-step improvement.

58
Q

Kaizen

A

The Japanese term “kaizen” means continuous improvement, and it refers to these focused improvements that can be conducted as part of ongoing operations and show results quickly, such as within a week or two.

59
Q

Continuous Improvement Objectives

A

These objectives can be expressed as improving quality and productivity and eliminating waste. The

60
Q

Continuous Process Improvement Steps

A
  1. Determine the process to be improved. 2. Gather and compile data on the as-is state. 3. Analyze the data and produce a to-be state. 4. Select the best method among alternatives. 5. Implement. 6. Sustain the new method.
61
Q

Commonalities among Continuous Improvement Methodologies

A

-Ensuring employee involvement and empowerment -Focusing on the customer -Sustaining continuous improvement

62
Q

Define Employee Involvement and Empowerment

A

Ensuring Employee Involvement and Empowerment Employee involvement (EI) : The concept of using the experience, creative energy, and intelligence of all employees by treating them with respect, keeping them informed, and including them and their ideas in decision-making processes appropriate to their areas of expertise. Employee involvement focuses on quality and productivity improvements. Employee empowerment : The practice of giving non-managerial employees the responsibility and the power to make decisions regarding their jobs or tasks. It is associated with the practice of transfer of managerial responsibility to the employee. Empowerment allows the employee to take on responsibility for tasks normally associated with staff specialists. Examples include allowing the employee to make scheduling, quality, process design, or purchasing decisions.

63
Q

Focusing on the Customer

A

Customers define the difference between what is value-added versus waste.

64
Q

Sustaining Continuous Improvement

A

Smaller improvements can be built into the regular course of operations and regular job duties. In this way, continuous improvement can be a never-ending quest to find the root causes of the next problem once the last one is resolved.