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6 Managing Quality PowerPoint presentation to accompany
Heizer and Render Operations Management, Eleventh Edition Principles of Operations Management, Ninth Edition PowerPoint slides by Jeff Heyl © 2014 Pearson Education, Inc.
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Outline Global Company Profile: Arnold Palmer Hospital
Quality and Strategy Defining Quality Total Quality Management Tools of TQM The Role of Inspection TQM in Services
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Learning Objectives When you complete this chapter you should be able to: Define quality and TQM Describe the ISO international quality standards Explain what Six Sigma is Explain how benchmarking is used in TQM Explain quality robust products and Taguchi concepts Use the seven tools of TQM
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Managing Quality Provides a Competitive Advantage
Arnold Palmer Hospital Deliver over 12,000 babies annually Virtually every type of quality tool is employed Continuous improvement Employee empowerment Benchmarking Just-in-time Quality tools © 2014 Pearson Education, Inc.
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Quality and Strategy Managing quality supports differentiation, low cost, and response strategies Quality helps firms increase sales and reduce costs Building a quality organization is a demanding task
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Two Ways Quality Improves Profitability
Figure 6.1 Improved response Flexible pricing Improved reputation Sales Gains via Improved Quality Increased Profits Increased productivity Lower rework and scrap costs Lower warranty costs Reduced Costs via
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The Flow of Activities Organizational Practices
Leadership, Mission statement, Effective operating procedures, Staff support, Training Yields: What is important and what is to be accomplished Quality Principles Customer focus, Continuous improvement, Benchmarking, Just-in-time, Tools of TQM Yields: How to do what is important and to be accomplished Employee Fulfillment Empowerment, Organizational commitment Yields: Employee attitudes that can accomplish what is important Customer Satisfaction Winning orders, Repeat customers Yields: An effective organization with a competitive advantage Figure 6.2
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Defining Quality An operations manager’s objective is to build a total quality management system that identifies and satisfies customer needs
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Defining Quality The totality of features and characteristics of a product or service that bears on its ability to satisfy stated or implied needs American Society for Quality
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Different Views User-based: better performance, more features
Manufacturing-based: conformance to standards, making it right the first time Product-based: specific and measurable attributes of the product
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Implications of Quality
Company reputation Perception of new products Employment practices Supplier relations Product liability Reduce risk Global implications Improved ability to compete
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ISO 9000 International Quality Standards
International recognition Encourages quality management procedures, detailed documentation, work instructions, and recordkeeping 2009 revision emphasized sustained success Over one million certifications in 178 countries Critical for global business
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ISO 9000 International Quality Standards
Management principles Top management leadership Customer satisfaction Continual improvement Involvement of people Process analysis Use of data-driven decision making A systems approach to management Mutually beneficial supplier relationships
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Costs of Quality Prevention costs - reducing the potential for defects
Appraisal costs - evaluating products, parts, and services Internal failure costs - producing defective parts or service before delivery External failure costs - defects discovered after delivery
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Costs of Quality External Failure Internal Failure Prevention
Total Cost Quality Improvement Total Cost External Failure Internal Failure Prevention Appraisal
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Takumi A Japanese character that symbolizes a broader dimension than quality, a deeper process than education, and a more perfect method than persistence
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Leaders in Quality TABLE 6.1
Leaders in the Field of Quality Management LEADER PHILOSOPHY/CONTRIBUTION W. Edwards Deming Deming insisted management accept responsibility for building good systems. The employee cannot produce products that on average exceed the quality of what the process is capable of producing. His 14 points for implementing quality improvement are presented in this chapter. Joseph M. Juran A pioneer in teaching the Japanese how to improve quality, Juran believed strongly in top-management commitment, support, and involvement in the quality effort. He was also a believer in teams that continually seek to raise quality standards. Juran varies from Deming somewhat in focusing on the customer and defining quality as fitness for use, not necessarily the written specifications.
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Leaders in Quality TABLE 6.1
Leaders in the Field of Quality Management LEADER PHILOSOPHY/CONTRIBUTION Amarnd Feigenbaum His 1961 book Total Quality Control laid out 40 steps to quality improvement processes. He viewed quality not as a set of tools but as a total field that integrated the processes of a company. His work in how people learn from each other’s successes led to the field of cross-functional teamwork. Philip B. Crosby Quality Is Free was Crosby’s attention-getting book published in Crosby believed that in the traditional trade-off between the cost of improving quality and the cost of poor quality, the cost of poor quality is understated. The cost of poor quality should include all of the things that are involved in not doing the job right the first time. Crosby coined the term zero defects and stated, “There is absolutely no reason for having errors or defects in any product or service.”
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Total Quality Management
Encompasses entire organization from supplier to customer Stresses a commitment by management to have a continuing companywide drive toward excellence in all aspects of products and services that are important to the customer
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Deming’s Fourteen Points
TABLE 6.2 Deming’s 14 Points for Implementing Quality Improvement 1. Create consistency of purpose 2. Lead to promote change 3. Build quality into the product; stop depending on inspections to catch problems 4. Build long-term relationships based on performance instead of awarding business on price 5. Continuously improve product, quality, and service 6. Start training 7. Emphasize leadership
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Deming’s Fourteen Points
TABLE 6.2 Deming’s 14 Points for Implementing Quality Improvement 8. Drive out fear 9. Break down barriers between departments 10. Stop haranguing workers 11. Support, help, and improve 12. Remove barriers to pride in work 13. Institute a vigorous program of education and self-improvement 14. Put everyone in the company to work on the transformation
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Historical Evolution of TQM
History of TQM : Naval Air System command used the term for the first time to refer Japanese system of quality improvement. However, its root can be traced back to early 1920s- during these days statistical theories were applied to improve quality of products. This concept was later improved by American quality Gurus like Deming, Juran, Feigenbaum. And later scope of TQM widened from mere product to all issues within the organization ( process, service and many more dimensions. )
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Phases of Evolution of TQM
Inspection Phase Quality Control and statistical theory Quality in Japan Total Quality Total quality management Quality awards and excellence models Business excellence Business Performance Improvement Resource (BPIR
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1. Inspection Inspection involves measuring, examining, and testing products, process and services against specified requirements to determine conformity. During the early years of manufacturing, inspection was used to decide whether a worker’s job or a product met the requirements; therefore, acceptable. It was not done in a systematic way, but worked well when the volume of production was reasonably low. However, as organisations became larger, the need for more effective operations became apparent. In 1911, Frederick W. Taylor helped to satisfy this need. He published ‘The Principles of Scientific Management’ which provided a framework for the effective use of people in industrial organisations.
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Inspection Contd. One of Taylor’s concepts was clearly defined tasks performed under standard conditions. Inspection was one of these tasks and was intended to; Ensure that no faulty product left the factory or workshop; focuses on the product and the detection of problems in the product; Involves testing every item to ensure that it complies with product specifications; Is carried out at the end of the production process; and relies on specially trained inspectors. This movement led to the emergence of a separate inspection department. An important new idea that emerged from this new department was defect prevention, which led to quality control. Inspection still has an important role in modern quality practices. However, it is no longer seen as the answer to all quality problems. Rather, it is one tool within a wider array.
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2. Quality control and statistical theory
Quality Control was introduced to detect and fix problems along the production line to prevent the production of faulty products. Statistical theory played an important role in this area. In the 1920s, Dr W. Shewhart developed the application of statistical methods to the management of quality. He made the first modern control chart and demonstrated that variation in the production process leads to variation in product. Therefore, eliminating variation in the process leads to a good standard of end products.
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Quality control and statistical theory contd.
Statistical Quality Control: focuses on product and the detection and control of quality problems; involves testing samples and statistically infers compliance of all products; is carried out at stages through the production process; and relies on trained production personnel and quality control professionals. Shewart’s work was later developed by Deming, Dodge and Roming. However, manufacturing companies did not fully utilise these techniques until the late 1940s.
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Shewhart’s PDCA Model 4. Act Implement the plan, document Plan
Identify the pattern and make a plan 3. Check Is the plan working? 2. Do Test the plan
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3. Quality in Japan In the 1940s, Japanese products were perceived as cheep, shoddy imitations. Japanese industrial leaders recognised this problem and aimed to produce innovative high quality products. They invited a few quality gurus, such as Deming, Juran, and Feigenbaum to learn how to achieve this aim. Deming suggested that they can achieve their goal in five years; not many Japanese believed him. However, they followed his suggestions. Maybe the Japanese thought it was rude to say that they did not believe Deming. Or maybe they thought it would be embarrassing if they could not follow his suggestions. Whatever reason it was, they took Deming’s and other gurus’ advice and never looked back.
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In the 1950s, quality control and management developed quickly and became a main theme of Japanese management. The idea of quality did not stop at the management level. Quality circles started in the early 60s. A quality circle is a volunteer group of workers who meet and discuss issues to improve any aspects of workplace, and make presentations to management with their ideas. A by-product of quality circles was employee motivation . Workers felt that they were involved and heard. Another by-product was the idea of improving not only quality of the products, but also every aspect of organisational issues. This probably was the start of the idea, total quality.
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4. Total Quality The term ‘total quality’ was used for the first time in a paper by Feigenbaum at the first international conference on quality control in Tokyo in The term referred to wider issues within an organisation. Ishikawa also discussed ‘total quality control’ in Japan, which is different from the western idea of total quality. According to his explanation, it means ‘company-wide quality control’ that involves all employees, from top management to the workers, in quality control.
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5. TQM In the 1980s to the 1990s, a new phase of quality control and management began. This became known as Total Quality Management (TQM). Having observed Japan’s success of employing quality issues, western companies started to introduce their own quality initiatives. TQM, developed as a catchall phrase for the broad spectrum of quality-focused strategies, programmes and techniques during this period, became the centre of focus for the western quality movement. A typical definition of TQM includes phrases such as: customer focus, the involvement of all employees, continuous improvement and the integration of quality management into the total organisation.
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In 1988 a major step forward in quality management was made with the development of the Malcolm Baldrige Award in the United States. The model, on which the award was based, represented the first clearly defined and internationally recognised TQM model. It was developed by the United States government to encourage companies to adopt the model and improve their competitiveness. In response to this, a similar model was developed by the European Foundation of Quality Management in This EFQM Excellence Model is the framework for the European Quality Award.
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6. Business Excellence TQM models are often called Business Excellence Models. Also, TQM itself is now often called Business Excellence. This is to distinguish the “new TQM” from the past work on TQM. As mentioned earlier, there was confusion as to what TQM was in the 80s and early 90s. This was because any business improvement programme was becoming called TQM. Therefore, the name TQM became tarnished. Business Excellence is really the same as TQM, but with a more clearly defined approach
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7. BPIR Increasing number of organisations, large or small, have become involved in TQM/Business Excellence in the new millennium. The Centre for Organisational Excellence Research (COER), recognised the need for resources devoted to this area and launched the BPIR.com in April 2002. Which stands for : Business Performance Improvement Resource
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Philosophies of TQM Customer Driven Quality Leadership
Continuous Improvement Employee’s participation Quick Response Quality Design Management by fact Work partnership with suppliers Performance measure Benchmarking
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Principles of TQM Producing quality work (the first time)
Focusing on the customer Strategic approach to improvement – guided by vision, mission- i.e. long term Improving continuously Employee involvement Encouraging mutual respect and teamwork Top management support Early detection of defects
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Cost of quality control
Appraisal cost Prevention cost Internal failure cost External failure cost
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1. Appraisal cost Appraisal costs are associated with measuring and monitoring activities related to quality. These costs are associated with the suppliers’ and customers’ evaluation of purchased materials, processes, products, and services to ensure that they conform to specifications. They could include: Cost of preparation of reporst and audits. Cost of maintenance and collaboration of test instrumentation and facilities Cost of administrative machinery and organization for inspections, testing and appraisal. Product review cost Cost of inward, in process and final inspection Process control cost Quality engineering cost Cost of destructive test losses, if any (prolonged test until the product fails – such as heat resistance, upto 100 degree Celsius) Field evaluation cost.
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2. Prevention cost The cost incurred to ensure there is no quality deviation – i.e. defective production prevention. The cost includes; Cost for acquiring the data related to quality and analyzing the data – it involves cost Cost of pilot production and scientific product development Cost of designing the quality map- what ? How ? When? Who etc. Cost of quality planning and organization Product review cost Cost of process control and design of process control system Research and testing costs for quality assurance and quality enhancement Cost of training for quality Trouble shooting and failure analysis Cost of adjustment, repairs and replacement on process machinery Administrative cost.
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Failure cost These costs are associated with the manufacturing and usage of products, which fail on quality requirements. Types of failure cost; Internal failure cost : cost related to defective products or services before they are delivered to the customers. E.g. rework cost, problem solving cost, material and product losses, scraps and downtime. External failure cost : costs related to delivering substandard products / services to the customers. E.g. returned goods, warranty cost, reworking cost, loss of goodwill, liability claims and penalties. Etc.
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Quality control –defined
According to Bethel, Atwater and Stackman, “Quality control refers to the systematic control of those variables encountered in a manufacturing process which affect the excellence of the end product. such variables result from the application of Men Machine Material and Manufacturing condition ” Quality control may be defined as that industrial management technique of group of techniques by means of which products of uniformly acceptable quality are manufactured. Alfred and Betty
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Quality control process
1. Establish quality standard 2. Measurement of quality (actual ) 3. Analysis of quality deviation 4. Corrective action
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Factors for controlling quality
1. Quality of material 2. Quality of manpower 3. Quality of machine 4. Quality of management
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Objectives of quality control
Defining and establishing quality standard from customer viewpoint. Detecting flaws (faults) or variations in raw materials (inputs) and process for smooth production. Evaluate the method and process of production and suggest for further improvement To find out the degree of quality deviation in the product To identify the causes for quality deviation To take measures for improving the quality.
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Advantages of quality control
Uniform quality and reliability of products – increase sales turnover thereby Reduced variability resulting in higher quality and reduced production bottlenecks Reduce the cost as a result of defective Increased quality consciousness among employees Higher operating efficiency Reduced inspection cost Minimum scrap Better customer satisfaction – goodwill
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Responsibilities for quality
Top management : support from top management. Design : quality map – what , how, who, where, how etc. Procurement of quality inputs Production / operation : process Quality assurance : analyze quality problems and offer suggestion to improve quality problems. Packaging and shipping : using the materials strong enough to preserve, protect the products. Marketing and sales : accurate determination of customer needs. Customer service
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JIT Brainchild of Henry Ford – but he did not develop it fully.
American manufacturing concerns did not use it therefore it was considered as a “Dead concept” upto 1960s. Later during 1970s, the concept was given a complete shape / final touch by Taii-Chi Ohno – a former shop manager, V. P of Toyota Motors. Then the concept was developed for eliminating 7 deadly wastes. Later, German manufacturing firms used it with slight modification of the concept.
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7 Deadly wastes Defects – work performed incorrectly that must ultimately be accurate in order to create value Work In Process – build-ups of queues and transactions which have not been completed to the customer’s specifications. Partially completed work consumes resources, but the customer is not willing to pay for it Overproduction – doing activities earlier than necessary. Typically leads to accumulated work in process Waiting – people and transactions idled due to work imbalances, defects or other root causes Motion – unnecessary human movement required to complete a transaction or customer request Transportation – movement, either physically or electronically, of a customer transaction which consumes resources and costs, but is not required to satisfy the customer Overprocessing – excess activity or steps that do not add value to the service or product for the end customer
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What is JIT Holding too much of inventory requires cost.
Producing large quantity requires cost – storage, safety. Availing inventory at the right quantity, time. It is a manufacturing system that responds to the market promptly at minimum cost. JIT is a philosophy than a technique Procure when required Produce when required – pull production
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Features of JIT A management philosophy
Pull method of material flow – procure when required, produce when demanded Small lot sizes Uniform work stations Standardized components and work methods Close supplier ties Automated production Preventive maintenance Zero inventories Less lead time – time between order and delivery.
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How JIT works Employees’ participation Kanban system of production
Developing Kaizan system : continuous improvement. Good processies bring good results Take action to contain and correct root causes of problems Work as a team Kaizen is everybody’s business Flexible manufacturing system TQM Business process re-engineering Focus on the factory network Qyality at source (supply side management)
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What JIT does Attacks waste Exposes bottlenecks and problems
Reduction in the size of inventory Process time, space requirement and set up time are reduced Eliminates waste by prohibiting overproduction Responds market need promptly Productivity Goodwill and profit
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Six Sigma Developed by Bill Smith – a senior engineer at Motorola – 1986 a means to eliminate the defects. Actual meaning of six sigma is less 3.4 defective items per 1 million units/ opportunities.
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Six Sigma Two meanings Statistical definition of a process that is % capable, 3.4 defects per million opportunities (DPMO) A program designed to reduce defects, lower costs, save time, and improve customer satisfaction A comprehensive system for achieving and sustaining business success
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Six Sigma Program Originally developed by Motorola, adopted and enhanced by Honeywell and GE Highly structured approach to process improvement A strategy A discipline – DMAIC A set of 7 tools 6
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Six Sigma Defines the project’s purpose, scope, and outputs, identifies the required process information keeping in mind the customer’s definition of quality Measures the process and collects data Analyzes the data ensuring repeatability and reproducibility Improves by modifying or redesigning existing processes and procedures Controls the new process to make sure performance levels are maintained DMAIC Approach
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Implementing Six Sigma
Emphasize defects per million opportunities as a standard metric Provide extensive training Focus on corporate sponsor support (Champions) Create qualified process improvement experts (Black Belts, Green Belts, etc.) Set stretch objectives
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Components of six sigma
Define Measure Analyze Improve Control
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TQM Tools Tools for Generating Ideas Tools to Organize the Data
Check Sheet Scatter Diagram Cause-and-Effect Diagram Tools to Organize the Data Pareto Chart Flowchart (Process Diagram)
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TQM Tools Tools for Identifying Problems Histogram
Statistical Process Control Chart
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Seven Tools of TQM (a) Check Sheet: An organized method of recording data Hour Defect A B C / / / / Figure 6.6
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Seven Tools of TQM (b) Scatter Diagram: A graph of the value of one variable vs. another variable Absenteeism Productivity Figure 6.6
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Seven Tools of TQM (c) Cause-and-Effect Diagram: A tool that identifies process elements (causes) that might effect an outcome Cause Materials Methods Manpower Machinery Effect Figure 6.6
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Seven Tools of TQM (d) Pareto Chart: A graph to identify and plot problems or defects in descending order of frequency Frequency Percent A B C D E Figure 6.6
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Seven Tools of TQM (e) Flowchart (Process Diagram): A chart that describes the steps in a process Figure 6.6
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Seven Tools of TQM (f) Histogram: A distribution showing the frequency of occurrences of a variable Distribution Repair time (minutes) Frequency Figure 6.6
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Seven Tools of TQM (g) Statistical Process Control Chart: A chart with time on the horizontal axis to plot values of a statistic Upper control limit Target value Lower control limit Time Figure 6.6
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Cause-and-Effect Diagrams
Material (ball) Method (shooting process) Size of ball Lopsidedness Grain/Feel (grip) Air pressure Follow-through Hand position Aiming point Bend knees Balance Missed free-throws Training Conditioning Motivation Concentration Consistency Manpower (shooter) Rim alignment Rim size Backboard stability Rim height Machine (hoop & backboard) Figure 6.7
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Pareto Charts Data for October 54 12 4 3 2 70 – 60 – 50 – 40 – 30 –
70 – 60 – 50 – 40 – 30 – 20 – 10 – 0 – Frequency (number) Causes and percent of the total Cumulative percent Data for October – 100 – 93 – 88 – 72 Room svc Check-in Pool hours Minibar Misc. 72% 16% 5% 4% 3% 12 4 3 2 54 Number of occurrences
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Flow Charts MRI Flowchart Physician schedules MRI
Patient taken to MRI Patient signs in Patient is prepped Technician carries out MRI Technician inspects film If unsatisfactory, repeat Patient taken back to room MRI read by radiologist MRI report transferred to physician Patient and physician discuss 9 8 80% 11 10 1 2 3 4 5 6 7 20%
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Control Charts Plot the percent of free throws missed
Figure 6.8 Plot the percent of free throws missed Upper control limit Coach’s target value Lower control limit Game number | | | | | | | | | 40% 20% 0%
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Inspection Involves examining items to see if an item is good or defective Detect a defective product Does not correct deficiencies in process or product It is expensive Issues When to inspect Where in process to inspect
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When and Where to Inspect
At the supplier’s plant while the supplier is producing At your facility upon receipt of goods from your supplier Before costly or irreversible processes During the step-by-step production process When production or service is complete Before delivery to your customer At the point of customer contact
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Inspection Many problems Cannot inspect quality into a product
Worker fatigue Measurement error Process variability Cannot inspect quality into a product Robust design, empowered employees, and sound processes are better solutions
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Dimensions of Service Quality
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Service Recovery Strategy
Managers should have a plan for when services fail Marriott’s LEARN routine Listen Empathize Apologize React Notify
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