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Operations chemical
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Project #1 Georgian Chemical
Operations and Process Mgmt - GSCM 1002Profesor - Jafar Razmi
- Kelly Licona, ID# 200581692
- Maria Duenas, ID# 200581704
- Sarah Oluwanmilowo Bode-Ajayi, ID# 200592748
- Jheel Vyas, ID# 200588598
- Harsh Kishan Bhatt, ID# 200586178
Index
Case Study Information
Solution
September Data
Conclusion
X bar chart (October)
Reference
R bar chart (October)
Case Study Information
Formula
σ = 12,87σx = 2,236 k = 30 n = 5
x̄ Chart
CL=x±zσx
X=(x̄1+x̄2+x̄3+x̄n)/k
where
Range Chart
UCL=D4R
R=ΣR/k
where
LCL=D3R
Russell et al. (2020). Table 3.1. Factors for Determining Control Limits for x ̅ - and R-Charts. [Table]. Wiley.
September
x-bar Chart (sulfate levels)
Group #3. x̄ Chart September (sulfate levels). [Graphic]
Range Chart (range of sulfate levels)
Group #3. Range Chart September (range of sulfate levels). [Graphic]
x̄ Chart (sulfate levels)
Group #3. x̄ Chart October (sulfate levels). [Graphic]
in control
sample averages beyond control limits
Range Chart (range of sulfate levels)
Group #3. Range Chart October(range of sulfate levels). [Graphic]
OUT OF CONTROL
up to day 6 it shows in control, but from data set number 7 onwards there is a noticeable increase resulting in sample 9 and 10 completely over the limit
Solution
Given the previous results to reef R chart, it is necessary to follow the suggestion of the production department by proceeding with an investment to reduce the amount of this pollutant. Being a run above the average, it can be said that there is greater dispersion, since there is an attrition in the process, producing products with a sulfate content slightly higher than specified, resulting in a process average higher than normal.
+ info
A perfect state of control is never achievable in a production process. The goal of process control charting is not perfection, but it allows us to achieve process standardization for reasonable and economical control.
Conclusion
The quality control department insists that the current average of approximately 50 ppm is within acceptable limits, an action plan will need to be implemented to reestablish R-bar levels.The production department should analyze the specific causes of the variation in sulfate levels. Look for factors that may be contributing to the inconsistency. Identify and address the root causes of the out-of-control R-chart. The decision to invest in improvements will depend on the impact of variability on product quality and customer satisfaction.
+ info
References
Russell, R., Taylor, B., Bayley, C., & Castillo, J. (2020). Operations and Process Management:Creating Value Along the Supply Chain (2nd Canadian ed.). Wiley. Ted Hessing, R. P. (2023). X Bar R Control Charts. Retrieved fromhttps://sixsigmastudyguide.com/x-bar-r-control-charts/
Thanks!
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ESCRIBE UN TÍTULO GENIAL AQUÍ
La comunicación visual es una herramienta clave. Nos resulta más sencillo 'leer' imágenes, que leer un texto escrito. Por ello, disciplinas como el Visual Thinking facilitan la toma de notas visualmente ricas gracias al uso de imágenes, gráficas, infografías y dibujos sencillos.
ESCRIBE UN TÍTULO GENIAL AQUÍ
La comunicación visual es una herramienta clave. Nos resulta más sencillo 'leer' imágenes, que leer un texto escrito. Por ello, disciplinas como el Visual Thinking facilitan la toma de notas visualmente ricas gracias al uso de imágenes, gráficas, infografías y dibujos sencillos.
ESCRIBE UN TÍTULO GENIAL AQUÍ
La comunicación visual es una herramienta clave. Nos resulta más sencillo 'leer' imágenes, que leer un texto escrito. Por ello, disciplinas como el Visual Thinking facilitan la toma de notas visualmente ricas gracias al uso de imágenes, gráficas, infografías y dibujos sencillos.