Comments on: The Toyota KPI Dashboard—Productivity

By: Christoph Roser

Christoph Roser — Thu, 21 Dec 2023 15:48:55 +0000

Hi Sven, many thanks for the compliments. Indeed, “Days of inventory” is much more common than “inventory reach”. However, the latter also has 300 000 hits on Google. Or maybe it is just a covert infiltration by the German lean community trying to change proper English to the German style. Would not be the first time, “Just in Time” would be written properly as “Just on Time” 🙂

Cheers,

Chris

By: Sven

Sven — Wed, 20 Dec 2023 10:37:03 +0000

Hi Christoph,

I just LOVE your blog. So many insights written in a clear, modest and witty way.

Not an English native speaker myself but I think “inventory reach” (for German Lagerreichweite?) may not be the correct term. I would go with Days of Inventory on Hand or Days in Inventory.

Happy holidays and talk to you soon,

Sven

By: Christoph Roser

Christoph Roser — Wed, 20 Dec 2023 08:31:29 +0000

Hi NIel, not sure which KPI of these you mean, but the list is directly from Toyota. This does not mean that every plant does it this way, there is definitely some variation between plants, but it is used. Unfortunately, I don’t know the feelings of the workers on these KPI. I assume it depends a lot on how the managers use these KPI. I assume if they make the worker feel guilty, they would hate it.

By: NIel

NIel — Tue, 12 Dec 2023 13:54:07 +0000

Hello Christopher, may i ask when was this KPI’s implemented and how did it affect the productivity of the workers?

By: Christoph Roser

Christoph Roser — Wed, 25 Oct 2023 11:56:47 +0000

Hi Alex….uh-oh…you are right. The calculation in my excel was that the actual time was the percentage of the max time. i.e. for march, 221.13 is 78% of 283.5, the difference being 62.37. my apologies, i messed up the labels for the rows in the excel chart. Thanks for finding that error!

By: Alex

Alex — Tue, 24 Oct 2023 07:12:50 +0000

Hello Christopher,

the math for Operational Availability(Percent) and the chart doesn’t adup.
Chart equation OA%= (Theo. Op. Time – Stoppage) / Theo. Op. Time
eg. Chart: March 78% = (283,5 h-62,37h)/283,5h
If i use the second equation OA% = (Act. Op. Time – Stoppage) / Act. Op. Time = (221,13h-62,37h)/221,13h=71,8%

Greetings
Alex

By: Christoph Roser

Christoph Roser — Fri, 20 Oct 2023 11:50:59 +0000

Hi Janez, this is correct, the operational availability is similar (or identical?) to the availability of the OEE. I added a comment to the blog posts, thanks for the input!

By: Janez Gradišek

Janez Gradišek — Wed, 18 Oct 2023 07:58:48 +0000

Hello Chris!
I am interested in the Operational Availability (OA). The 2nd formula (the “tougher” one) looks to me the same as the Availability factor in standard OEE calculation. Are they really the same? I would assume not, but I cannot see the difference between them. Can you please explain it a bit more?
Thank you.
Janez