Lean Six Sigma For Dummies. Martin Brenig-Jones

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      © Martin Brenig-Jones and Jo Dowdall

      FIGURE 2-3: Framing the scope of your improvement project.

Throughout your project, developing a storyboard summary of the key decisions and outputs helps you review progress and share what you’ve learned. A storyboard builds up as you work your way through your project by capturing the key outputs and findings from the DMAIC phases. A storyboard would include, for example, your improvement charter and process map (see Chapter 5) as well as other tools you’ll use in your DMAIC journey and the conclusions they help you to reach. The storyboard also helps your communication activities. Developing and reviewing a communication plan is an essential activity. You really need to keep your team and the people affected by your project informed about the progress you’re making. Communication begins on day one of your project.

      Measuring how the work is done

      After you’ve defined the problem, at least based on your current understanding, you need to clarify how, and how well, the work gets done. To understand the current situation of your process, knowing what it looks like is the best starting point. You need to know what’s currently happening, step by step, and how the process supports the delivery of the customer’s CTQ requirements.

      Knowing the current performance of your process is essential because this knowledge becomes your baseline. Measure what’s important to the customer, and remember also to measure from the perspective of the customer. Gathering this information can help focus your improvement efforts in the areas that matter most and prevent you from going off in the wrong direction. Using graphs and charts (which we cover in Chapter 8) can help you make better sense of the data, as they provide a visual picture that demonstrates performance and can show you, among other things, the variation within the process. You can also calculate the Process Sigma using the method described in Chapter 1.

      Lean Six Sigma projects can take longer than you might like because the right data isn’t in place in the day-to-day operation. So often, organizations have data coming out of their ears — but not the right data. You need to develop the right measures and start collecting the data you do need.

      Analyzing your process

In the Measure phase, you discovered what’s really happening in your process. Now you need to identify why it’s happening, and determine the root cause(s). You need to manage by fact, though, so you must verify and validate your ideas about possible suspects. Jumping to conclusions is all too easy.

      Carrying out the Analyze phase properly helps you determine the right solution(s) when you get to the Improve phase. Clearly, the extent of analysis required varies depending on the scope and nature of the problem you’re tackling, and, indeed, what your Measure activities have identified. Essentially, though, you’re analyzing the process and the data that the process produces.

      Checking the possible causes of your problem using concrete data to verify your ideas is crucial. You may find the “usual suspects” aren’t guilty at all! Identifying and removing the root causes of a problem prevents it happening again.

      Improving your process

      Now you’ve identified the root cause of the problem, you can begin to generate improvement ideas to help solve it. Improve, however, involves three distinct phases:

      Coming up with a control plan

      After the Improve phase, you need to implement the solution in a way that ensures you make the gains you expected and hold onto them. If you’re to continue your efforts in reducing variation and cutting out waste, the changes being made to the process need to be consistently deployed and followed.

If the improvement team is handing over the “new” process to the process team, the handover needs to ensure that everyone understands who’s responsible for what and when. Misunderstandings are all too easy, and a clear cut-off point must exist signaling the end of the improvement team’s role. A control plan should be developed to ensure that the gain is secured and the new process effectively deployed.

      The control plan helps to ensure that the process is carried out consistently. It also identifies key points in the process where measurement data is needed, plus highlights what action is required depending on the results. Ensuring you have the right ongoing measures in place is extremely important. Chapter 18 includes information on key Control phase tools, including the Process Management Chart.

Reviewing Your DMAIC Phases

      Informal reviews of the progress of your improvement project on a weekly or even daily basis may be very sensible. These reviews involve the improvement team and the champion or sponsor. You could consider using aspects of the Agile scrum process outlined in Chapter 16.

      As a minimum, you should conduct a formal tollgate review at the end of each DMAIC phase. A tollgate review checks that you have completed the current phase properly and reviews the team’s various outputs from it. The improvement team leader and the sponsor or champion of the improvement activity should conduct this review. In effect, you’re passing through a tollgate.

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