Greenbelt Chapter 16: Control Phase Flashcards

1
Q

Control

A

During the control phase, teams build monitors that let them ensure the improved process continues with the expected measurement baselines they set forth.

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2
Q

Revise FMEA

A

(Failure Mode & Effect Analysis- from Measure) is from the measure phase.
-There are 2 reasons to revisit FMEA:
1.) They need to check the risk priority number
calculated for the sol’n implemented.

     2.) Can help identify future projects by looking at the 
          FMEA.
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3
Q

Create a Control Plan

A

A Control Plan is “written control plan” for the process owner:
The control plan is made for the team lead so that
they can control, track, and respond to key
performance indicators.

A control plan should be user-friendly. It should be easy to read, should detail- how to monitor, when to monitor, what range of data is acceptable to monitor, and what range is good, etc.

Each workstation should have a control plan:

  • company, division, department name
  • name of person who created it
  • execution date
  • project name
  • process owner
  • list of process steps and where monitoring should be done
  • acceptable range of measurements
  • unit of measure
  • method of measures
  • sample size
  • frequency of measurements that should be taken
  • associated policy & procedure documents
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4
Q

Visual Management

A

Visual management includes color coding, safety signals, visual representation of how a process should be done; (red tapes and numbering schemes)

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5
Q

SPC Charts

A

SPC charts are also called control charts; they are used to see if a process metric is out of range from what is said in the control plan.

Basic SPC Chart/Control Chart Includes:
-a line chart that graphs continuous data for a data metric.
- an x bar line is made for the average that should be
seen
- SD are shown above and below (+/- 3SD).
-This creates 3 different zones ranging from A,B,C
above x-bar and A,B,C below x bar.

*****READING SPC CHARTS ARE VERY IMPORTANT: Based on the ranges of the recorded data points, you will be able to tell the severity of the problem (major problem, minor problem; efficiency; problem with machines, employees, shifts,etc.)

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6
Q

Control Versus Capability Process

A

Terminology:
Controlled Process- not much variation in the process

Capable Process- the process has control as well as creates satisfactory results for customers needs.

You can calculate a processes capability:

(ucl- x bar)/ SD = sigma level
Cpk = sigma level/ 3
Cpk value conversion on table –> ***sigma level =4

***4 sigma is minimum to keep customer satisfaction and therefore be a capable process.

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7
Q

Control Tollgate Checklist

A

Before finishing the Control Phase, complete this checklist:

  • Team has calculated performance and capability of new process (control charts were made, cpk was calculated for process)
  • control plan is written
  • monitors are written and included in control plan
  • team has given control transition to business process owner.
  • Owner was given all tools that are needed to maintain the process improvement.
  • team reflected on the project and gave suggestions for future improvements.
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