34 Looking for a Better Way: Improving Production and Operations

Putting Quality First

Successful businesses recognize that quality and productivity must go hand in hand. Quality goods and services meet customer expectations by providing reliable performance. Defective products waste materials and time, increasing costs. Worse, poor quality causes customer dissatisfaction, which usually results in lost sales.

A consumer measures quality by how well a product serves its purpose. From the manufacturer’s point of view, quality is the degree to which the product conforms to a set of predetermined standards. Quality control involves creating quality standards, producing goods that meet them, and measuring finished goods and services against them. It takes more than just inspecting goods at the end of the assembly line to ensure quality control, however. Quality control requires a company-wide dedication to managing and working in a way that builds excellence into every facet of operations.

Dr. W. Edwards Deming, an American management consultant, was the first to say that quality control should be a company-wide goal. His ideas were adopted by the Japanese in the 1950s but largely ignored in the United States until the 1970s. Deming believed that quality control starts with top management, who must foster a company-wide culture dedicated to producing quality.

Deming’s concept of Total Quality Management (TQM)emphasizes the use of quality principles in all aspects of a company’s production and operations. It recognizes that all employees involved with bringing a product or service to customers—marketing, purchasing, accounting, shipping, manufacturing—contribute to its quality. TQM focuses on continuous improvement, a commitment to constantly seek better ways of doing things in order to achieve greater efficiency and improve quality. Company-wide teams work together to prevent problems and systematically improve key processes instead of troubleshooting problems only as they arise. Continuous improvement continually measures performance using statistical techniques and looks for ways to apply new technologies and innovative production methods.

Another quality-control method is the Six Sigma quality program. Six Sigma is a company-wide process that focuses on measuring the number of defects that occur and systematically eliminating them in order to get as close to “zero defects” as possible. In fact, Six Sigma quality aims to have every process produce no more than 3.4 defects per million. Six Sigma focuses on designing products that not only have fewer defects but that also satisfy customer needs. A key process of Six Sigma is called DMAIC. This stands for Define, Measure, Analyze, Improve, and Control. Employees at all levels define what needs to be done to ensure quality, then measure and analyze production results using statistics to see if standards are met. They are also charged with finding ways to improve and control quality.

General Electric was one of the first companies to institute Six Sigma throughout the organization. GE employees are trained in Six Sigma concepts, and many analysts believe this has given GE a competitive manufacturing advantage. Service firms and government entities have applied Six Sigma to their quality initiatives as well.

Lean Manufacturing Trims the Fat

Manufacturers are discovering that they can better respond to rapidly changing customer demands, while keeping inventory and production costs down, by adopting lean-manufacturing techniques. Lean manufacturing streamlines production by eliminating steps in the production process that do not add benefits customers want. In other words, non-value-added production processes are cut so that the company can concentrate its production and operations resources on items essential to satisfying customers. Toyota was a pioneer in developing these techniques, but today manufacturers in many industries have adopted the lean-manufacturing philosophy.

Another Japanese concept, just-in-time (JIT), goes hand in hand with lean manufacturing. JIT is based on the belief that materials should arrive exactly when they are needed for production, rather than being stored on-site. Relying closely on computerized systems such as MRP, MRPII, and ERP, manufacturers determine what parts will be needed and when and then order them from suppliers so they arrive “just in time.” Under the JIT system, inventory and products are “pulled” through the production process in response to customer demand. JIT requires close teamwork between vendors and purchasing and production personnel because any delays in deliveries of supplies could bring JIT production to a halt.

Unexpected events like the September 11 terrorist attacks or the shutdown of ports due to Hurricane Harvey and the devastation and flooding caused by Hurricane Maria in Puerto Rico can cause chaos in the supply chains of manufacturers, resulting in problems for firms relying on JIT. But if employed properly, and in spite of these risks, a JIT system can greatly reduce inventory-holding costs and smooth production highs and lows.