Control chart
© 2012 International Institute for Learning, Inc.
DS – 624
Quality Management
© 2014 International Institute for Learning, Inc.
7-00-*
IIL-LSSGB
Learning objectives
- Describe what is a control plan
- Describe the purpose of a control plan
- Articulate the types of questions to ask while creating a control plan
Lean Six Sigma Green Belt
Introduction to Control
IIL-LSSGB
7-00-*
Roadmap – Control Phase
Define
Houston, we
have a problem
Measure
How bad is it?
Analyze
Find the
Root Cause
Improve
Fix it- Eliminate
Root Cause
Control
Make it
stay fixed
Control Plan
Control Charts
Project Close Out
Lean Six Sigma Green Belt
Introduction to Control
IIL-LSSGB
This roadmap shows the activities and tools of the Control phase. It is designed to give you a good overview of the main steps in Control.
7-00-*
Control Plan
Lean Six Sigma Green Belt
7_TP-*
Transition Planning
IIL-LSSGB
What is a Control Plan?
A written summary description of the system for controlling processes
It identifies and provides information to manage: Measuring, monitoring, and control of the key process metrics.
Lean Six Sigma Green Belt
7_TP-*
Transition Planning
IIL-LSSGB
The control plan provides a written summary description of the system for controlling parts and processes.
The control plan is used to minimize process and product variation.
The control plan describes the actions that are required at each phase of the process –including receiving, in-process, final assembly, and shipping – to assure that all process outputs will be in a state of control. A control plan for operational actions such as ordering, order taking, invoicing, billing, etc. can also be utilized for transactional operations.
The control plan does not replace the information contained in detailed operator instructions. Since processes are expected to be continually updated and improved, the control plan is a living document, reflecting the current methods of control and measurement systems used.
The Control Plan tells leaders how to react to process problems as they occur. It also focuses on early detection and prevention of process problems before they occur.
Purpose of Control Plan
Maintains process performance to satisfy customers’ needs
Monitor process variation
Aids in timely troubleshooting of processes
Holds the gains achieved by improvement activities
Drives ongoing process performance improvement
Lean Six Sigma Green Belt
7_TP-*
Transition Planning
IIL-LSSGB
Questions to Ask for Control Plan
Control Metrics
What metrics are you tracking going forward?
Are you tracking X’s as well as the Y?
How are they defined?
Does the frequency of data collection allow for timely intervention of the process?
Control Charts
Are you using Control Charts to monitor the process?
Has the process owner been trained on how to manage using control charts?
Reaction Plan
Who is responsible to take action if the process is out of control?
What actions are planned if the process is out of control?
Lean Six Sigma Green Belt
Introduction to Control
IIL-LSSGB
Here are the things your project sponsor will be looking for during the Control phase project report.
7-00-*
Focus of Control Plan: Input and Outputs
To confirm sustainable improvement in Y
Control X’s at the right levels using SPC
Improved Process
Y
X’s
Measure
Improve
Control
LSL
USL
Target
Lean Six Sigma Green Belt
7_TP-*
Transition Planning
IIL-LSSGB
The goal of the Control phase is to make sure that your implemented improvements did indeed fix the problem, that it did not break anything else, and that the problem stays fixed.
Control Plan Template
Delivery
Company Name:______________________________________________
Process Name:________________________________________________
Process ID:___________________________________________________
Process Scope: START:_________________END:___________________
Prepared by::________________________Date:____________________
Approved by::_______________________Date: ____________________
Process Owner:________________________________________________
X
Customer specified due date
98%
100%
The time product is delivered
Late = 1Defect
Each Delivery
Each Delivery
Delivery Supervisor
Google sheet
RCA & 5 Whys
| Process Step | CTQ | Spec. Characteristics | Specifications | Unit of Measurement | Measurement Method | Sample Size | Frequency of Measurement | Who Measures | Where Recorded | Corrective Action |
| Input | Output | LSL | USL | |||||||
This is a copy of the Control Plan Template in Sigma XL. Go to DMAIC and DFSS Templates and Drop Down to Control Plan.
The top section is administrative information and the bottom section is where all the important process information and measurements are recorded.
Lean Six Sigma Green Belt
Transition Planning
7_TP-*
IIL-LSSGB
Learning objectives
- Describe what is a control plan
- Describe the purpose of a control plan
- Articulate the types of questions to ask while creating a control plan
Lean Six Sigma Green Belt
Introduction to Control
IIL-LSSGB
7-00-*
© 2012 International Institute for Learning, Inc.
Thank you!
© 2014 International Institute for Learning, Inc.
7-00-*
IIL-LSSGB