Lecture Operations management: Creating value along the supply chain (Canadian edition) - Chapter 3

Chapter 3 statistical process control. This chapter includes contents: Basics of statistical process control, control charts, control charts for attributes, control charts for variables, control chart patterns, SPC with excel and OM tools, process capability. | Lecture Operations management: Creating value along the supply chain (Canadian edition) - Chapter 3 OPERATIONS MANAGEMENT: Creating Value Along the Supply Chain, Canadian Edition Robert S. Russell, Bernard W. Taylor III, Ignacio Castillo, Navneet Vidyarthi CHAPTER 3 Statistical Process Control 1 Learning Objectives Explain the basics of applying statistical process control (SPC) in production and services. Discuss the rationale and procedure for the initial construction of a control chart. Use attribute control charts. Use variable control charts. Identify control chart patterns and describe appropriate data collection. Evaluate the process capability of a process. 3-2 Lecture Outline Basics of Statistical Process Control Control Charts Control Charts for Attributes Control Charts for Variables Control Chart Patterns SPC with Excel and OM Tools Process Capability 3-3 Statistical Process Control (SPC) Statistical Process Control monitoring production process to detect and prevent poor quality Sample subset of items produced to use for inspection Control Charts process is within statistical control limits UCL LCL 3-4 Process Variability Non-Random Random • special causes • inherent in a process • identifiable and correctable • depends on equipment and machinery, • include equipment out of engineering, operator, adjustment, defective and system of materials, changes in parts measurement or materials, broken • natural occurrences machinery or equipment, operator fatigue or poor work methods, or errors due to lack of training 3-5 SPC in Quality Management SPC uses Is the process in control? Identify problems in order to make improvements Contribute to the TQM goal of continuous improvement 3-6 Quality Measures: Attributes and Variables Attribute A characteristic which is evaluated with a discrete response good/bad;