Process control
Introduction to Construction Quality Planning, Applying APQP to construction manufacturing, published by the Construction Innovation Hub in December 2019, states process control (PC): ‘…enables monitoring of the process in such a way that any variation showing instability in the process can be quickly identified and acted upon. In the manufacturing sector, this is referred to as ‘special cause variation’. By getting rid of such ‘special cause variation’ the process becomes stable and quality becomes predictable. More advanced process controls can be established as the manufacturing process becomes more mature. Process capability indices are sometimes used to monitor the KCs or CIs identified by the DFMEA (Design Failure Mode and Effects Analysis). These indices provide for monitoring the short-term and long-term capability of a given process. Therefore, clients and tier 1 contractors can be assured that the supply chain have achieved minimum acceptable maturity through the adoption of this toolset.’
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