In my previous post, I discussed how to Determine the Size of Your FiFo Lane – The FiFo Formula. My preferred method is still an expert estimate. However, if you are interested in the math, here is a small JavaScript calculator that estimates a FiFo size for two processes.

# Math

Posts including calculations and formulas.

## Determining the Size of Your FiFo Lane – The FiFo Formula

FiFo lanes are an important tool to establish a pull system. They are often combined with kanban. However, while there is a lot of information on how to calculate the number of kanban (the Kanban Formula), there is very little information available on how large a FiFo should be. In my last post I talked about why we need FiFo lanes. In this post I want to discuss how large a FiFo should be.

## How Many Kanbans? – Estimation Approach and Maintenance

In my previous two posts, I described how to calculate the number of kanbans (Post 1 and Post 2). However, this calculation is complex, and the result is nothing more than a very rough estimate. Hence my preferred method for determining the number of kanbans is, broadly speaking, “*just take enough, and then see if you can reduce them.*” In this post, I would like to explain this approach and also discuss how and when to update the number of kanbans.

## How Many Kanbans? – The Kanban Formula, Part 2

This is the second post on kanban calculation (if possible, please read the **first post on kanban calculation **first). There are two possible approaches. First, you can **calculate the number of kanbans **using a kanban formula (due to its length, split into a first post and this second post). Alternatively, you can **estimate the number of kanbans **and adjust the system as it is running (as shown in a third post).

## How Many Kanbans? – The Kanban Formula, Part 1

One frequent and tricky question when designing a pull system is to determine **how many kanbans** to use in the system. There are two possible approaches. First, you can **calculate the number of kanbans **using a kanban formula. Due to the length of the process, I have broken this into two posts (For the second part click here). Alternatively, you can **estimate the number of kanbans **and adjust the system as it is running (as shown in a third post).

## How to Measure OEE

There is quite a difference between knowing in theory **how to measure an Overall Equipment Effectiveness (OEE), and actually measuring it in practice**. This post will give crucial tips and points on how to measure the OEE on a real shop floor.

## What is OEE? – Definition of OEE

**OEE**, the abbreviation for Overall Equipment Effectiveness (or sometimes Overall Equipment *Efficiency*), is a measure of the utilization of a machine. It is frequently used on the shop floor, often determines part of the performance-based compensation of the managers, and is **by far and wide the most lied-about and fudged measurement on the shop floor**.