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ISO-9000 Requirements
Published in Michael B. Weinstein, Total Quality Safety Management and Auting, 2018
Corrective and preventive action means that effective action is taken to prevent the occurrence and recurrence of nonconformities (unsafe items, processes, or equipment). Corrective action is reactive, directed to eliminating causes of actual nonconforrnities, while preventive action is proactive, directed to eliminating causes of potential nonconformities. Continuous improvement is the result of identifying and correcting the causes of nonconformances.
Application of Statistical Process Control to Monitor Underground Coal Mine Fires Based on CO Emissions
Published in Combustion Science and Technology, 2022
Nilufer Kursunoglu, Huseyin Ankara
Statistical process control (SPC) is a method or tool used to continuously monitor a process and identify the conditions that cause variability (instability) in the process. For quality measurement, the SPC requires statistical sampling, which consists primarily of small piles of units collected at sequential, regular intervals. The primary objective of the SPC is to identify and resolve problems with assignable causes. The objective of the SPC is to maintain process stability by removing specific causes of variation. A controlled process consistently produces a product within its inherent tolerances by monitoring and eliminating specific causes of change. Benefits of the SPC include the reduction of control activities, the ability to monitor process capability, and the identification of corrective and preventive action requirements (Montgomery 2009). The SPC is a tool used to ensure production conformity to predetermined quality specifications, target standard adherence, and minimize the production of nonconforming products. Thus, it affords the opportunity to make decisions based on data in order to initiate corrective and preventive actions. (Figure 1).