Operations Management Test
Chapter 10 (Unit 8): Quality Control
Learning Objective: * Learning Objectives: 1. List and briefly explain the elements in the control process 2. Explain how control charts are used to monitor a process, and the concepts that underlie their use 3. Use and interpret control charts 4. Perform run tests to check for nonrandomness in process output 5. Assess process capability * What is Quality Control? 6. A process that evaluates output relative to a standard and takes corrective action when output doesn’t meet standards * If results are acceptable no further action is required * Unacceptable results call for correction action * Phases of Quality Assurance:
* Inspection * An appraisal activity that compares goods or services to a standard * Inspection issues: 1. How much to inspect and how often 2. At what points in the process to inspect 3. Whether to inspect in a centralized or on-site location 4. Whether to inspect attributes or variables * How Much to Inspect?
* Typical Inspection Points: * Raw materials and purchased parts * Finished products * Before a costly operation * Before an irreversible process * Before a covering process * Effects on cost and level of disruption are a major issue in selecting centralized vs. on-site inspection * Centralized * Specialized tests that may best be completed in a lab * More specialized testing equipment * More favorable testing environment * On-Site * Quicker decisions are rendered * Avoid introduction of extraneous factors * Quality at the source * Statistical Process Control (SPC) * Quality control seeks * Quality of Conformance * A product or service conforms to specifications * A tool used to help in this
Learning Objective: * Learning Objectives: 1. List and briefly explain the elements in the control process 2. Explain how control charts are used to monitor a process, and the concepts that underlie their use 3. Use and interpret control charts 4. Perform run tests to check for nonrandomness in process output 5. Assess process capability * What is Quality Control? 6. A process that evaluates output relative to a standard and takes corrective action when output doesn’t meet standards * If results are acceptable no further action is required * Unacceptable results call for correction action * Phases of Quality Assurance:
* Inspection * An appraisal activity that compares goods or services to a standard * Inspection issues: 1. How much to inspect and how often 2. At what points in the process to inspect 3. Whether to inspect in a centralized or on-site location 4. Whether to inspect attributes or variables * How Much to Inspect?
* Typical Inspection Points: * Raw materials and purchased parts * Finished products * Before a costly operation * Before an irreversible process * Before a covering process * Effects on cost and level of disruption are a major issue in selecting centralized vs. on-site inspection * Centralized * Specialized tests that may best be completed in a lab * More specialized testing equipment * More favorable testing environment * On-Site * Quicker decisions are rendered * Avoid introduction of extraneous factors * Quality at the source * Statistical Process Control (SPC) * Quality control seeks * Quality of Conformance * A product or service conforms to specifications * A tool used to help in this