Process control at Polaroid
Basing your analysis on both quantitative and qualitative tools, what evidence is there that quality is getting better? Pod Weight control According to Pod Weight control chart in Appendix, the pod weight performance variability is within the control limit (between 2.774 - 2.835), which means the process is in control. This indicates the quality is getting better since the Pod Weight defect rate is normal (Pod Weight measurement is a part of defect report issued by operator, which continue 1% after Greenlight implementation) and in control, although they reduce the number of quality control samples. However, each average of sample of the last five shifts has decreasing trend. Therefore, Polaroid might want to investigate the cause before the process is out of control. Less Quality Control expense Since quality control activities do not add value to the Polaroid camera, a company normally wants to reduce the cost of quality control as much as possible. In Polaroid, the quality control process itself can increase the defect rate and makes the sampling product to be reworked. Therefore, reducing the number of samples by implementing Greenlight saves the company’s expense. Standardize the process Prior to the Greenlight project, the process quality at Polaroid was rely on operators’ individual performance since each of them had their own mindset how to handle the machines from their experience. The knowledge of dealing with machines belonged to operators, not the company. The Greenlight project s provides the standard direction, which benefits to the company since now the knowledge belongs to the company. Basing your analysis on both quantitative and qualitative tools, what evidence is there that quality is getting worse? Finger Height control The control chart of Finger Height measurement in appendix is not as good as Pod Weight. 20 of 45 sampling data are out of control. Moreover, the interval between the maximum and average value...
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