Quality control refers to the technical process that gathers, examines, analyze & report the progress of the project & conformance with the performance requirements.
The steps involved in quality control process are:
- Determine what parameter is to be controlled.
- Establish its criticality and whether you need to control before, during or after results are produced.
- Establish a specification for the parameter to be controlled which provides limits of acceptability and units of measure.
- Produce plans for controls which specify the means by which the characteristics will be achieved and variation detected and removed.
- Organize resources to implement the plans for quality control.
- Install a sensor at an appropriate point in the process to sense variance from specification.
- Collect and transmit data to a place for analysis.
- Verify the results and diagnose the cause of variance.
- Propose remedies and decide on the action needed to restore the status quo.
- Take the agreed action and check that the variance has been corrected.
Advantages include better products and services ultimately establishing a good reputation for a company and higher revenue from having more satisfied customers.
Disadvantages include needing more man power/operations to maintain quality control and adding more time to the initial process.