Welcome to Business Management
Sunday, May 20, 2007
TQM Implementation Project Part 7b – How to Overcome Trend Charting and Control Chart Problem
The CONTROL Phase in implementing an improvement project is most neglected step but critical step. It is done to ensure corrective actions or short or long term solution put in placed are effective and able to yield expected results. It cannot be over emphasized the importance of CONTROL.
Just to recap, tools used in the CONTROL Phase are listed below.
In this issue, I will cover the tools in bold:
Trend Charting Control Chart Documentation Audit On-job training Re-certification
Issues in Trend Charting Once data are available, team has to chart out the data with different type of trend chart.Data accuracy is main issue during this stage where team uses it to plot the trend chart and use it for the entire duration of the project.
At times, team cannot decide the duration of the data to be plotted into the trend chart.
There is no clear guide line should the data be 3 months, 6 months etc in duration. How Trend Charting Issues were overcome Though there is no major issue in deciding or changing the duration of the data,
One general rule to use is to include data that reflects before and after an improvement was carried out. Example: if some improvement was done 3 months ago, the data needed is to include those data 3 months before the improvement.
Look for a trend of which point an improvement has began to decide the duration.
Team to consider 3 months duration or longer period. Issues in Control Chart Team need to track the performance of the improvement for consistency using the control Chart. Below are some common issues faced by the team:-
team has no confidence to decide the control limits when it is out of the spec requirement.
Team has no experience to interpret the control chart trend
Team not sure what to do when it is out of limitsHow control chart Issues were overcome For experience user of control chart, there is not much of an issue to use it. However, my team has no prior experience in using the Control Chart. Hence, they adopted the following approach to overcome the above problem:-
Just to recap, tools used in the CONTROL Phase are listed below.
In this issue, I will cover the tools in bold:
Trend Charting Control Chart Documentation Audit On-job training Re-certification
Issues in Trend Charting Once data are available, team has to chart out the data with different type of trend chart.Data accuracy is main issue during this stage where team uses it to plot the trend chart and use it for the entire duration of the project.
At times, team cannot decide the duration of the data to be plotted into the trend chart.
There is no clear guide line should the data be 3 months, 6 months etc in duration. How Trend Charting Issues were overcome Though there is no major issue in deciding or changing the duration of the data,
One general rule to use is to include data that reflects before and after an improvement was carried out. Example: if some improvement was done 3 months ago, the data needed is to include those data 3 months before the improvement.
Look for a trend of which point an improvement has began to decide the duration.
Team to consider 3 months duration or longer period. Issues in Control Chart Team need to track the performance of the improvement for consistency using the control Chart. Below are some common issues faced by the team:-
team has no confidence to decide the control limits when it is out of the spec requirement.
Team has no experience to interpret the control chart trend
Team not sure what to do when it is out of limitsHow control chart Issues were overcome For experience user of control chart, there is not much of an issue to use it. However, my team has no prior experience in using the Control Chart. Hence, they adopted the following approach to overcome the above problem:-
# posted by gopi @ 9:15 PM 
Subscribe to Posts [Atom]