https://github.com/joelparkerhenderson/value-stream-mapping

Value Stream Mapping (VSM) tutorial (work in progress)
https://github.com/joelparkerhenderson/value-stream-mapping

Last synced: 3 months ago
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Value Stream Mapping (VSM) tutorial (work in progress)

• Host: GitHub
• URL: https://github.com/joelparkerhenderson/value-stream-mapping
• Owner: joelparkerhenderson
• Created: 2016-11-30T19:26:33.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2023-09-15T19:40:21.000Z (10 months ago)
• Last Synced: 2024-03-21T18:10:11.507Z (3 months ago)
• Size: 4.88 KB
• Stars: 27
• Watchers: 3
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Code of conduct: CODE_OF_CONDUCT.md

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• awesome-developing - Value Stream Mapping (VSM)

README

        


# Value stream mapping (VSM)

Value stream mapping is a lean-management method for analyzing the current state and designing a future state for the series of events that take a product or service from its beginning through to the customer. 

Contents:

* [VSM links](#vsm-links)

* [VSM wordbook](#vsm-wordbook)

* [VSM metrics](#vsm-metrics)

* [VSM types of waste](#vsm-types-of-waste)

## VSM links

* [Wikipedia](https://en.wikipedia.org/wiki/Value_stream_mapping)

* [Value stream mapping for non-manufacturing by Martin](http://www.slideshare.net/AMEConnect/value-stream-mapping-for-non-manufacturingmartinreplacement)

## VSM wordbook

* Value Adding (VA): any activity that your external customers value, and would be willing to pay for.

* Necessary Non-Value Adding (N NVA): any activity that is necessary but does not add value, for example any necessary support processes, legal regulatory requirements, etc.

* Unnessary Non-Value Adding (U NVA): any activity that is unnecesssary, a.k.a. waste.

## VSM metrics

In order of importance.

* Value Time (VT)

  * The time spent on adding value. This is actually performing the work.

* Process Time (PT)

  * A.k.a. touch time, work time, cycle time.

  * The time it takes to actually perform the work, if a person is able to work on it fully and focus on it fully.

  * Include task-specific doing, talking, thinking, etc.

* Lead Time (LT)

  * A.k.a. throughput time, turnaround time, elapsed time.

  * The elapsed time from when the input to a step is available, until the step is compeleted i.e. the work is sent along to the next step.

  * Include Process Time, not just the waiting time.

* Percentage Activity (%A)

  * Calculate (PT / LT) * 100

* Input Percentage Complete & Accurate (%C&A)

  * The percentage of inputs that are fully usable, i.e. that are complete and that are accurate, as measured by the person receiving the inputs.

  * Similar to "first pass yield" in manufacturing.

* Rolled first pass yield (RFPY)

  * A.k.a. %Clean, %C&A for stream

  * Calculate %C&A * %C&A * %C&A ...

  * The percent of value stream output that goes through the process cleanly, i.e. without any need for rework.

* Number of Handoffs (#HO)

* Number of IT Systems (#IT)

* Freed capacity

## VSM types of waste

* Overproduction

* Inventory

* Waiting

* Over-processing

* Errors

* Motion (people)

* Transportation (material, data, etc.)

* Underutilized people