DAC Value Stream Mapping 2

Question 1

In Value Stream Mapping, what does 'takt time' represent?

Accepted Answer

The rate at which work must be completed to meet customer demand

Answer

Takt time is the available production time divided by customer demand rate, representing the pace work must flow to satisfy customers.

Question 2

Which type of waste in Value Stream Mapping refers to producing more than what the customer currently needs?

Accepted Answer

Overproduction

Answer

Overproduction is considered the worst waste in Lean thinking because it creates additional inventory, space needs, and other downstream wastes.

Question 3

When a DAC coach facilitates a VSM workshop, what is the recommended first step after assembling the team?

Accepted Answer

Identify and agree on the product family or value stream scope

Answer

Scoping the value stream by selecting the product family ensures the team maps the right flow before gathering any data.

Question 4

In a VSM current-state map, a 'push' arrow indicates what about the flow of work?

Accepted Answer

Work is scheduled and released without regard for downstream capacity

Answer

A push arrow shows that upstream processes push work downstream regardless of whether the next step is ready to receive it, often creating queues.

Question 5

What is the primary purpose of calculating 'process efficiency' in a Value Stream Map?

Accepted Answer

To reveal the ratio of value-added time to total lead time

Answer

Process efficiency = value-added time ÷ total lead time, exposing how much of the elapsed time actually adds value for the customer.

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