Scripting Changeovers Leads to Consistent Performance

I moved to Armstrong World Industries’ St. Helens Oregon ceiling tile plant as Production Manager for three years. During that time, I was able to test many Lean principles and improve my understanding of how to manage an organization to high performance.

John, the Vice President of Operations, offered me the job with one stipulation. I had to complete the “15-minute changeover” project I had been working on as a team member. I agreed and knew I could influence the organization’s performance as an insider, rather than as a corporate resource.

We had already made capital improvements to the line and developed most of our “One Best Way” changeover procedures through a series of Kaizen events over the life of the project. Now, it was up to me to come up with the operating principles and approach to strengthen the improvements and sustain the gains from the teams’ hard work.

In an earlier story, I talked about how I created alignment around everyone helping during the changeover and not sitting in the breakroom if their part of the line wasn’t changing over. That reduced average changeover time by 3 minutes or more. Now, we needed to come up with a way to communicate and coordinate everyone’s efforts to get the line up as safely and effectively as possible.

We placed lights at seven different stations around the line. We called them the “Towers of Light” and the idea was if the light was yellow, you were in the middle of making your changeover adjustments. If it was red, you needed help, and if it was green, you were ready. We thought the use of the lights would indicate status to everyone and the line would start up immediately when all 7 lights were green.

It didn’t happen as planned. People were so focused on what they were doing and what light to light, that they didn’t pay attention to anyone else’s status. We needed to add an extra layer of communication to our process.

Working with a small team of technicians, we developed a “script” to be followed before, during, and after the changeover. We used the plant public address (PA) system and it went like this:

Before the changeover, the Changeover Coordinator would announce the changeover to be completed from what product to the next product, the target time for the changeover, and a reminder to light the Tower of Light to show status at every station.

During the changeover, each of the technicians at the seven stations would announce their status over the PA system as they became ready or needed help.

After the changeover, the changeover coordinator would announce the results of the changeover and congratulate the team if they met or beat the changeover time target.

For the first month, people didn’t want to follow the script and often made fun of it as they were doing it. Then we started to see improved changeover results. All of a sudden the script became critical to our technicians. Instead of making fun of it they had fun with it. They started competing to see who could announce that they were “READY” before all others. They would encourage each other and hoot and holler when they met or beat the target time. Our results continued to improve, and the changeover script became part of the culture of the plant for the rest of my time there and beyond.