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6.4 Quality Systems

Many organizations employ various quality systems to manage and enhance their quality standards. Three common quality systems are Total Quality Management (TQM), ISO 9001, and Six Sigma.

Total Quality Management (TQM)

In today’s competitive environment, companies must deliver high-quality goods and services that meet or exceed customer expectations. Total Quality Management (TQM), also known as quality assurance, encompasses all the steps a company takes to ensure its products or services align with customer-defined specifications and maintain high quality.

TQM principles generally focus on three key areas:

  1. Customer satisfaction
  2. Employee involvement
  3. Continuous improvement

Let’s delve deeper into these principles.

 

Customer Satisfaction
Employee Involvement
Continuous Improvement

ISO Standards

The International Organization for Standardization (ISO) is an independent, non-governmental organization that develops and publishes voluntary international standards. Founded in 1947 and headquartered in Geneva, Switzerland, ISO operates in 164 countries and is the largest developer of international standards.

The primary objective of ISO standards is to promote global proprietary, industrial, and commercial standards that facilitate trade and ensure the safety, reliability, and quality of products and services. By enabling direct comparisons between products from different markets, these standards assist businesses in entering new markets and contribute to developing fair global trade practices.

Additionally, ISO standards serve to safeguard consumers and end-users by ensuring that certified products and services conform to internationally established minimum standards. Using these standards helps organizations create safe, reliable, and high-quality offerings while increasing productivity and minimizing errors and waste.

Video: “What ISO standards do for you” by ISO [2:05] is licensed under the Standard YouTube License. Transcript and closed captions available on YouTube.

Steps in Obtaining ISO Certification
What Benefits Are There to Obtaining ISO Certification?

Read the article below from the Business Development Bank of Canada.


Hazard Analysis Critical Control Point (HACCP)

HACCP is a quality management system specifically designed for organizations in the food processing industry. Implementing a HACCP program can yield several significant benefits:

  • Gain Customer Confidence: Demonstrating a commitment to food safety can enhance customer trust.
  • Sharpen Competitive Edge and Develop New Export Opportunities: Adhering to HACCP standards can differentiate your business and open up new markets.
  • Achieve More Rigorous Quality Control: Implementing HACCP ensures that stringent quality control measures are in place.
  • Reduce Waste and Spoilage: Effective management of food safety risks can minimize waste and spoilage.
  • Control Contamination Risks and Recall Processes: HACCP helps identify and control contamination risks, thereby streamlining recall processes if necessary.
  • Build Awareness of Hygiene and Safety for Employees: Training employees on HACCP principles increases their awareness of hygiene and safety practices.
  • Eliminate Potential Allergen Issues: HACCP helps identify and manage potential allergen risks.

The Seven Principles of HACCP 

The seven principles of HACCP outline the steps necessary to manage and control food safety risks within a business:

  1. Conduct a Hazard Analysis: Identify potential hazards affecting food safety.
  2. Identify Critical Control Points (CCPs): Determine the points in the process where hazards can be prevented, eliminated, or reduced to safe levels.
  3. Establish Critical Limits: Set maximum or minimum limits for each CCP to ensure food safety.
  4. Monitor Critical Control Points: Implement procedures to monitor CCPs and ensure they remain within the established limits.
  5. Establish Corrective Actions: When monitoring indicates a CCP is not within the established limits, define actions to be taken.
  6. Establish Record-Keeping Procedures: Maintain documentation and records to demonstrate compliance with HACCP principles.
  7. Establish Verification Procedures: Implement procedures to verify that the HACCP system is working effectively.

Ensuring the safety of customers is paramount for any food business. Organizations can control food safety risks and protect against foodborne illness outbreaks by implementing a successful HACCP program. Since 2005, it has been mandatory for federally registered meat and poultry establishments to become HACCP-certified. The Canadian Food Inspection Agency also recommends HACCP compliance certification for all businesses within the food supply chain.

Video: “HACCP – Making Food Products Safe, Part 1” by Alberta Agriculture and Irrigation [15:06] is licensed under the Standard YouTube License. Transcript and closed captions available on YouTube.


Six Sigma

In your career, you may find yourself working in an organization that has adopted a Six Sigma program. Six Sigma is a comprehensive set of techniques and tools designed for process improvement. It was introduced by engineer Bill Smith at Motorola in 1980. The primary goal of Six Sigma is to achieve business success by minimizing variation in business processes. The term “Six Sigma quality” refers to a process that is so well-controlled that it produces no more than 3.4 defects per million opportunities.

The concept of Six Sigma is rooted in statistics, where “sigma” denotes standard deviation, a measure of variation within a dataset. Typically, a company process might operate at a 3-sigma quality level, meaning that 99.73% of all output falls within plus or minus three standard deviations from the mean. This results in 0.27% of all outputs being non-conforming or defective, which equates to 2,700 defects per million opportunities. Such a defect rate is unacceptable in industries where quality is critical to customer safety, such as manufacturing aircraft, automobiles, or medical devices. In contrast, a Six Sigma process achieves 99.99966% defect-free outputs.

The image shows a bell-shaped curve. The mean, or average, is represented by the Greek letter μ, in the center. Each segment (colored in dark blue to light blue) represents one standard deviation away from the mean
Figure 6.4.1: “Normal distribution diagram utilizing Six Sigma” by Ainali, CC BY-SA 3.0

The DMAIC Improvement Model

Unique to Six Sigma is the DMAIC Improvement Model, which stands for Define, Measure, Analyze, Improve, and Control. In Six Sigma, improvements are driven by project teams assembled to address quality issues, streamline existing processes, or develop new processes. The DMAIC model guides these teams through a structured approach to process improvement (American Society for Quality, n.d.):

  1. Define: Identify the problem by understanding who the customer is, what their needs are, and what is most important to them. Determine the most suitable project to improve and meet customer requirements.
  2. Measure: Assess current process performance by collecting data and comparing it to the desired state. Use tools like Pareto charts to analyze the frequency of problems or causes.
  3. Analyze: Investigate the process to identify why defects are occurring and determine the causes of variation and poor performance. Conduct root cause analysis to pinpoint these issues.
  4. Improve: Enhance process performance by eliminating the causes of defects. Modify the process and measure the results to ensure the problem has been resolved.
  5. Control: Implement a plan to maintain the improved process and ensure that the gains are sustained over time.

By following the DMAIC model, organizations can systematically improve their processes, reduce defects, and enhance overall quality, leading to increased customer satisfaction and business success.

The image depicts a circular diagram with five interconnected components: "Define", "Measure", "Analyze", "Improve", and "Control". The diagram illustrates a continuous improvement cycle, with each component represented by an icon
Figure 6.4.2: “Cyclical diagram of the DMAIC model” by Sanaz Habib, CC BY-NC-SA 4.0.

Six Sigma Belt Levels

Another unique aspect of Six Sigma is the use of a belt system, similar to martial arts, to symbolize an individual’s level of expertise and proficiency in Six Sigma methodologies. The belt levels are as follows:

  • Green Belt: A Green Belt designation indicates that an individual has received Six Sigma training. Green Belts typically have full-time roles within the organization but are called upon to assist with Six Sigma projects part-time. They support project teams by applying Six Sigma tools and techniques under the guidance of more experienced Black Belts.
  • Black Belt: A Black Belt is a full-time position within the quality department, where the individual works exclusively as a coach and leader for Six Sigma projects. Black Belts possess extensive experience in Six Sigma methodologies and spend the majority of their time leading project teams, providing guidance, and ensuring the successful implementation of Six Sigma initiatives.
  • Master Black Belt: A Master Black Belt is a full-time position within the Six Sigma team, with extensive experience managing and overseeing Six Sigma projects. Master Black Belts serve as coaches and mentors to Black Belts, providing advanced training, guidance, and support in implementing complex Six Sigma projects.
  • Champion: A Champion is typically a senior manager or executive overseeing the Six Sigma program and its associated personnel. Champions are responsible for determining which projects should be prioritized, ensuring proper allocation of resources, and removing any roadblocks that may hinder the success of Six Sigma initiatives. They play a crucial role in promoting and supporting the Six Sigma culture within the organization.

This belt system recognizes an individual’s level of expertise and defines their roles and responsibilities within the Six Sigma program. It fosters a structured approach to continuous improvement. It ensures that Six Sigma projects are led by qualified and experienced professionals, ultimately contributing to the organization’s overall quality and operational excellence.

Figure 6.4.3: “Variation of belt colours associated with Six Sigma” by Zirguezi, CC0 1.0. Mods: re-coloured by Fanshawe College
Image Description

The image displays the organizational structure of a Lean Six Sigma system. It features a pyramid-shaped hierarchy with different belt levels, including Master Black Belt (MBB), Black Belt, Green Belt, and Yellow Belt. The MBB is described as a Black Belt trained with at least two years of experience, who teaches Lean Six Sigma. The Black Belt is a full-time project leader, the Green Belt focuses on tools usage, DMAIC, and Lean principles application, and the Yellow Belt has Lean Six Sigma awareness.


6.4 Quality Systems” from Fundamentals of Operations Management by Azim Abbas and Seyed Goosheh is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

 

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Operations Management Copyright © 2024 by Azim Abbas and Seyed Goosheh is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.