You keep running into problems while trying to time for Standard Work
Process documentation is important for two reasons. The obvious one is to create work instructions that record the details of how a process should be completed. The other big reason is to create a standard sequence of operations (i.e. when the process steps should be done) to provide more consistency in the time a process takes. This helps leaders accurately assess the staffing needs of an organization. It also provides an indicator of when a team member is falling behind on a process.
Obviously, to serve these last two needs, the timing of the work must be accurate. Sometimes, though, a process has substantial variation, and it is a challenge to time it without something unusual happening at one or more of the steps. With a long process that has many steps, this effect is even more pronounced. It is important to be clear to your team about how to address this variation when documenting a process.
Note: Variation and Standard Work have a “chicken or the egg” type of relationship. You want to knock out the variation before trying to set up your Standard Work, but Standard Work is among the best ways to get rid of variation. In practice, most people try to eliminate the low hanging fruit, and then establish a standard. Continuous improvement is then applied to keep making the Standard Work better.
You keep running into problems while trying to time for Standard Work.
You can’t seem to get a “clean” time. After several cycles, only a couple of trials did not have a problem that delayed the process.
Don’t dismiss problems when taking times to establish Standard Work. Make a note of the issue and let the stopwatch keep running. Trying to subtract out “problem time” on the fly is too hard—the results just don’t end up being accurate. Plus, if you write down the problem, you know what needs to get fixed to make Standard Work flow smoothly.
Setting a standard is difficult when there is a lot of variation. The best method is to start by resolving any problems that cause unpredictability in the process. The less variation you have when you start documenting, the smoother your task will go.
Unfortunately, eliminating these issues is one of those easier-said-than-done tasks. After all, if the fixes were quick and simple, wouldn’t they have already been done?
Instead, your boss will need to make a choice. He will have to decide how to handle the problems. Lean experts each seem to have their own way of managing problems and variations. If nothing else, this should tell you that your boss will be selecting from several less-than-perfect options. The most common options include the following:
Ignore the problems.
This means that the problem is not recorded on the Standard Work Sheet, even though it occurred during the timing. The logic here is that the issue is an aberration that would not take place during a “normal” run.
Lean purists tend to push for this option. They would say that the problem should be worked on and removed, rather than enabled by including it in Standard Work.
Problems that make it to the Standard Work Sheet are only visible to the operator doing the work. When a problem is treated as an exception, it becomes visible to leaders and engineers as well, which usually makes it get fixed quicker.
If you don’t document the issue on the Standard Work Sheet though, workers will exceed the takt time whenever the problem comes up. In that case, your boss must choose from two imperfect options:
The second choice is better than the first option, but…
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