SPC Implementation
No.	Activities	Frequency	Responsible Person	Input	Output
A1	Select Size, Frequency and Number of Subgroups	At set up	Engineers, QA	Control Plan, PFMEA, Customer Requirements	Control Method as defined in Control Plans
A2	Set up Control Charts and record Raw Data	Ongoing Mass Production	Operators / Supervisors	Blank Form Control Chart	Filled-up Control Charts
A3	Calculate the Average and Range of each subgroup	Ongoing Mass Production	Operators / Supervisors	Blank Form Control Chart	Filled-up Control Charts
A4	Select Scales for the Control Chart	At set up	Engineers, QA	Blank Form Control Chart	Filled-up Control Charts
A5	Plot the Average and Range on the Control Chart	Ongoing Mass Production	Operators / Supervisors	Blank Form Control Chart	Filled-up Control Charts
B1	Calculate the Average Range (R-bar) and Process Average (X-double bar)	Ongoing Mass Production	Operators / Supervisors	Blank Form Control Chart	Filled-up Control Charts
B2	Calculate the Control Limits (UCL, LCL of both X-bar and R Chart)	Ongoing Mass Production	Operators / Supervisors	Blank Form Control Chart	Filled-up Control Charts
B3	Draw Lines for the Average and Control limits on the Charts	Ongoing Mass Production	Operators / Supervisors	Blank Form Control Chart	Filled-up Control Charts
C1, C4	Analyze the Data plot on the Range Chart and X-bar Chart	Ongoing Mass Production	Operators / Supervisors / Engineers	Filled-up Control Charts	Abnormal pattern identified on Filled-up Control Charts
C2, C5	Find and Address Special Causes	Once Out-of-Control Condition is found during ongoing Mass Production	Operators / Supervisors / Engineers	Filled-up Control Charts, Cause-Effect Diagrams	All Potential Special Causes
C3, C6	Recalculate Control Limits	Once Out-of-Control Condition is removed during ongoing Mass Production	Operators / Supervisors / Engineers	Filled-up Control Charts	Filled-up Control Charts with revised Control Limits
C7	Extend Control Limit for Ongoing Control	At Setting up and periodically as needed	Engineers	Filled-up Control Charts with revised Control Limits	New Control Limit as Guideline
C8	Implant Concept on "Control"	Ongoing Mass Production	All	Analyzed Control Charts	Better understanding in Continuous Improvement
D1	Calculate the Process Standard Deviation	Periodically	Engineers	Filled-up Control Charts	Process Standard Deviation (Spread)
D2	Calculate the Process Capability	Periodically	Engineers	Process Standard Deviation (Spread), Customer Specification	Cpk
D3	Evaluate the Process Capability	Periodically	Engineers	Calculated Cpk and Customer Requirements	Needed Action
D4	Improve the process Capability	Periodically	Engineers	Analyzed Control Charts, Calculated Cpk and Expected Cpk	List of further actions
D5	Chart and Analyze the Revised Process	Repeat the above steps	All	All	Action Result, Revised Control Plan, Revised PFMEA