Weld It in Place to Sustain It

Before I developed the Wheel of Sustainability, I had to find other methods to sustain the gains my teams worked so hard to develop during weeklong events. Here’s a story of the extreme lengths one team went to make sure no one could ever make a change to their improvements.

I was requested to help a team in Armstrong’s Macon Georgia ceiling tile plant. They were experiencing jams at the end of the production line. These jams caused significant safety risk and high levels of downtime that affected the productivity of the operation. I was known for my efforts to improve flow on production lines and this was an extremely high value project.

I took a tour of the line and saw many opportunities to improve flow and reduce jams. I discussed my observations with the plant manager, and he agreed to assign a high skill team of line operators, mechanics, and the day shift supervisor to assist me.

We spent the first day of our event observing the flow of ceiling tiles as they traveled around the line over various conveyers. One area stood out above the rest: the twenty foot conveyer leading up to the flipper. Tiles were turning and entering the flipper in a skewed fashion. Every so often, they would get stuck and not flip correctly, causing the tiles behind them to back up and jam. People on the line had to rush around and clear the tiles off the line. Many times, they shut the line down and threw out a lot of damaged tiles.

We adjusted the conveyers and guides and tested our changes. The tiles were now going straight into the flipper. None of the other tiles were backing up and jamming. We had our solution. Our new challenge was to keep things in this optimal situation.

We brainstormed ways to sustain our improvements. We came up with ways to mark the conveyer rollers and guides. We considered drilling holes in the guides and pinning them in location. Then, one of our mechanics asked the question, “Now that we have the best location, why would let anyone make a change to it?” We looked at him and wondered what his idea was. He said, “Weld everything in place. Nobody can ever change it without a torch!”

He was right, of course. But were we willing to take such a leap and make our changes permanent? We decided to make further observations for the next two days, doing everything we could to make sure no one changed our settings during that time. To our relief, no changes were made, and more importantly, there were no jams.

The next day, we took a leap of faith and shut the line down. Two of our mechanics welded all guides in place. Once everything had cooled down and was cleaned up, we started the line back up. The tiles entered the flipper squarely and without incident. Even though we knew this should work, we were all relieved.

We gave a tour of this and other changes we made to the line and our sponsors were impressed and pleased. Team members remarked how important it was to keep our changes in place from now on. We joked about keeping the “red wrench” (torch) out of the hands of our maintenance department, so that they wouldn’t take our welds out.

From time to time, on subsequent visits to the Macon plant, I would go to the production line and verify that the guides were still welded in place. Ten years later, everything was as we left it and the line continued its improved performance.