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About this lesson
The To-Be process map or value stream map is the proposed new process that has incorporated the flow improvements, five “S” changes, and Poka Yoke aspects at each step. This map is the plan for process change.
Exercise files
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To-Be Process Map Exercise.docx167.5 KB To-Be Process Map Solution.docx
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Quick reference
To-Be Value Stream
The To-Be process map or value stream map is the proposed new process that has incorporated the flow improvements, five “S” changes, and Poka Yoke aspects at each step. This map is the plan for process change.
When to use
The To-Be map is generated during the Improve phase. This map becomes the new process baseline for use during the Control phase of the Lean Six Sigma project.
Instructions
Start with the As-Is map and modify it to create the To-Be map. Incorporate changes in the flow design including the elimination of non-value-added steps. Revise the remaining steps to incorporate any Poka Yoke, Five S, or TAKT time changes to create new step designs. For the To-Be Value Stream Map, add the databoxes with the design goals for improvement in each of the databox metrics. As the new process is piloted and experience is gained, update the databox entries with actual performance metrics. This includes both cycle time metrics and quality improvement metrics on first-pass yield. Also, incorporate any changes to the flow that are associated with transitioning to a pull scheduling system.
When the map is first developed, targets are set for the databox values at each step. The targets for each step should be realistic. For instance, it is unlikely that you can eliminate all non-value-added time because of normal variation that exists in all processes. The target goals for improvement in each step are often based on the elimination of root causes and redesign to achieve benchmark performance levels. If there is no available benchmark, seek a “50%” improvement in the metric. During the design of improvements, targets are useful for design teams to both challenge them and to ensure they don’t waste time and effort striving for unattainable perfection.
Benchmarking
Benchmarking is a process that is used to establish “best-in-class” targets. Benchmarks can be established for product, process, or business performance metrics. The benchmarking process should include both a review of the existing product or process in addition to the benchmarked products or processes so as to determine the magnitude of the gap. The benchmarking approach normally includes a literature search to identify organizations or products that can be used when establishing the benchmarks. The means for collecting benchmark information can be through surveys or direct observation. This is often an iterative process as the identification of benchmarked products or processes will often lead to the need for deeper investigation. The attached flowchart represents a template for conducting a benchmarking study.
Hints & tips
- Don’t expect perfection in your To-Be map, but do expect significant improvement.
- Once the new process is in place, evaluate the pilot run performance and update the VSM databox metrics.
- The To-Be process may need to go through several stages as some improvements can be implemented with virtually no effort but others may require the purchase of new equipment or may depend on the implementation of other projects. An example would be an electronic Kanban system that speeds the handoff between steps but first requires the purchase and installation of software and scanners at each step in the process. The first To-Be map does not include the Kanban effect, but the ultimate map will include it.
- 00:04 Hi, I'm Ray Sheen.
- 00:06 As we seek to improve the situation that caused the problem,
- 00:09 it often means we need to create a new process flow.
- 00:13 We talked during the measure stage about defining the As Is process.
- 00:18 Now it's time to create a To Be process, this is how we hope the process will
- 00:22 operate once all of the changes are implemented.
- 00:26 A nice thing about lean improvements is that many of them are localized to
- 00:30 just a few steps, and that means that you can start to put them in place
- 00:33 without needing to wait for everything else to be ready to go.
- 00:37 So don't delay incorporating changes,
- 00:39 start getting benefits as soon as possible.
- 00:42 Some improvements will focus on flow and streamline the flow of the value stream
- 00:47 map, we talked about those in an earlier lesson.
- 00:51 Some of the improvements will focus on improving quality at each step.
- 00:54 We've also talked about quality improvements in
- 00:57 the lessons on Poka-Yoke and 5S.
- 00:59 These improvements will reduce costs, reduce uncertainty in delivery and
- 01:03 performance, which improves customer satisfaction.
- 01:07 And some improvements will focus on improving the process scheduling, applying
- 01:12 pull principles instead of push, this is also a principle that we've discussed.
- 01:17 These changes often give us a process that is faster, lower cost,
- 01:21 lower inventory, better quality, and more responsive to customer needs.
- 01:26 Wow, who wouldn't want that?
- 01:29 The To Be map also contains targets or
- 01:32 estimates of how this new process should be performing.
- 01:37 These targets are normally based upon the actual data that we had in the As Is map,
- 01:41 so our starting point is the current reality.
- 01:44 And we recognize perfection is unrealistic.
- 01:47 Remember, there are common cause variations in every process, and
- 01:52 that will include some variation in our To Be process.
- 01:55 However, we want to eliminate waste and make improvements.
- 01:59 In fact, you can look to the market to get competing benchmarks so
- 02:02 that you know how to position yourself.
- 02:05 I'll talk more about benchmarking here in a minute.
- 02:08 If you don't have any other ways to set targets,
- 02:11 I usually start with the old 50% rule, I try to get a 50% improvement.
- 02:16 So cut the cycle time by 50%.
- 02:18 A 50% cut in non-value-added effort.
- 02:21 Cut defect rates by 50%.
- 02:24 Improve your output by at least 50%.
- 02:27 Sometimes there are industry benchmarks, especially for technical performance.
- 02:31 If your product wasn't measuring up to the standard,
- 02:33 set your target to achieve the standard level.
- 02:36 Just be aware that the standard can change quickly.
- 02:40 Targets will help to focus the improvement efforts and provide a measurement for
- 02:44 success for the team.
- 02:46 Nothing is more frustrating to a team who worked their tails off to achieve a major
- 02:50 improvement, only to be told well yeah, that's good, but that's not good enough.
- 02:55 Let them know what the target is so
- 02:57 they can have the destination clearly in front of them.
- 03:01 I mentioned benchmarking, so let's run through this process.
- 03:05 I've done benchmarking studies with a number of companies,
- 03:08 I'll share with you a few of the best practices I've learned.
- 03:11 Benchmarking is described as the process of seeking out and studying the best
- 03:16 internal and external practices that produce superior performance.
- 03:21 You can benchmark products or processes.
- 03:24 And of course market analysts are frequently benchmarking business
- 03:27 performance between companies.
- 03:30 Benchmarking relies on finding the really good ideas of others and
- 03:34 using them to improve our own products and processes.
- 03:39 There's an old saying, don't reinvent the wheel,
- 03:41 that's the principle that we're talking about here.
- 03:44 If there is a good idea out there, use it, borrow shamelessly.
- 03:48 With the obvious caveat that you need to be respectful of intellectual property
- 03:53 rights and personal privacy.
- 03:55 Also, don't just copy, improve, but with the benchmark as a starting point for
- 04:01 your creativity juices to get flowing.
- 04:04 Another monitor I've used is adopt, adapt, advance.
- 04:07 Adopt the benchmark practice, adapt it to your own products or markets, and
- 04:12 use it to advance your organization.
- 04:15 One last point on this topic, let me take you through the benchmarking process flow
- 04:18 diagram that I'm showing here.
- 04:21 Notice that it's not a value stream map, it is a process flow because we definitely
- 04:25 have to make a number of decisions along the way.
- 04:29 We start by defining our performance criteria, what do we want to improve?
- 04:34 I then do an online search to see what is being done in that area right now,
- 04:38 who are some of the leaders?
- 04:41 From that point I decide how to do the analysis, is it a survey, an interview,
- 04:45 site visits?
- 04:47 Once I've determined on the analytical method,
- 04:50 I analyze our current system with that method, in part to de-bug it but also so
- 04:54 I'll have that to compare to the other benchmarked information.
- 04:58 I pick my benchmarking targets for the survey, interviews, or site visits, and
- 05:02 then conduct those.
- 05:04 I then analyze the benchmarks along with the current system.
- 05:07 And based on what I find, I either go back and do more benchmarking, or
- 05:11 possibly go do a more in-depth benchmark analysis with just a few organizations.
- 05:16 And I continue this several times,
- 05:19 until I have enough information to create a report and a presentation.
- 05:24 The To Be map is your specification for process change and improvement,
- 05:29 it's your Lean Six Sigma team's project goal from a process perspective.
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