Wednesday, August 24, 2022

Value Stream Mapping - The Concept

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1996

James P. Womack & Daniel T. Jones in "Lean Thinking" Book.

Chapter 2 is on "The Value Stream."

Notes No.4 in the chapter. p. 358 of second edition, Paperback Edition, Simon & Schuster, 2003

The analysis presented here is at a high level, without many details. To uncover every instance of every type of muda requires a detailed analysis using a portfolio of tools drawn from industrial engineering ... The most important of these are process mapping (to identify and categorize each step together with the time, distance and effort involved)...


1998 - 2003


The lean production movement (Womack and Jones, 1996) developed and presented the value stream mapping (VSM) tool (Rother and Shook, 1998; Pavnaskar et al., 2003) as a functional method aimed at reorganizing production systems with a lean vision.


VSM is based on five phases put into practice by a special team created for such a purpose (Rother and Shook, 1998). The phases are:

(1) selection of a product family;
(2) current state mapping;
(3) future state mapping;
(4) defining a working plan; and
(5) achieving the working plan.

Guidelines are needed for the definition of the future state map; lean thinking provides them to assist users in how this map should be drawn (Rother and Shook, 1998; Marchwinski and Shook, 2003). These guidelines in summarized form are:
.
The production rate must be imposed by the product demand. Takt time is the concept that reflects such a rate.
.
Establishment of continuous flow where possible (unique product transfer batches).
.
Employment of pull systems between different work centres when continuous flow is not possible.
.
Only one process, called the pacemaker process, should command the production of the different parts. This process will set the pace for the entire value stream.

Value Stream Mapping Symbols
http://www.strategosinc.com/vsm_symbols.htm


Symbols and Map - Presentation
http://courses.washington.edu/ie337/Value_Stream_Mapping.pdf

VALUE-STREAM MAPPING ICONS FOR EXCEL - Excel Sheet for download
http://www.lean.org/common/display/?o=866



An evaluation of the value stream mapping tool
http://zonecours.hec.ca/documents/H2008-1-1575591.E_H08_2008_VSM_ProdSyst_Serrano-Lasa%26al.pdf



Excel Tools for Value Stream Mapping
http://www.smartdraw.com/value-stream-map/value-stream-mapping-template.htm
7 days free trail. You have to give your mail id for downloading free version.


Updated 24.8.2022,  21 May 2015
Initial post 26 Feb 2014


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