To read the full version of this content please select one of the options below:

Waste identification diagram and value stream mapping: A comparative analysis

Jose Dinis-Carvalho (Department of Production and Systems, Universidade do Minho, Guimarães, Portugal)
Levi Guimaraes (Universidade do Minho, Guimarães, Portugal)
Rui M. Sousa (Department of Production and Systems, Universidade do Minho, Guimarães, Portugal)
Celina Pinto Leao (Department of Production and Systems, Universidade do Minho, Guimarães, Portugal)

International Journal of Lean Six Sigma

ISSN: 2040-4166

Article publication date: 11 October 2018

Issue publication date: 14 August 2019

Abstract

Purpose

The purpose of this paper is to compare the well-known value stream mapping (VSM) with a recent tool named waste identification diagram (WID), regarding the capacity of information representation and easiness of interpretation.

Design/methodology/approach

The work begins with a brief literature review comparing the main tools for representation of production units, with special emphasis on VSM and WID, in terms of ability to identify several types of waste. Then, the authors developed the VSM and the WID of a specific production unit and after that several groups composed by students of Industrial Engineering (IE) and/or professionals from industry were asked to analyse/interpret only one of these diagrams. Finally, a questionnaire with closed and open questions was applied to the groups to evaluate the analysed tool.

Findings

In general, the results revealed that WID is more effective than VSM and participants recognized that most of the WID elements are relevant. Specifically, a measure coined overall effectiveness was applied (based on the response time and percentage of correct interpretations), indicating a clear advantage of WID (22 per cent of correct interpretations per minute) compared to VSM (9 per cent of correct interpretations per minute). The main drawback pointed to the WID is the lack of representation of the information flow.

Originality/value

This work contributes to the IE field by revealing WID as a new promising graphical tool for representation of production units, especially in terms of identification/quantification of wastes. The tool was quantitative and qualitatively evaluated by persons both from academia and industry.

Keywords

Acknowledgements

This work was funded by COMPETE-POCI-01-0145-FEDER-007043 and FCT-UIDCEC-00319-2013.

Citation

Dinis-Carvalho, J., Guimaraes, L., Sousa, R.M. and Leao, C.P. (2019), "Waste identification diagram and value stream mapping: A comparative analysis", International Journal of Lean Six Sigma, Vol. 10 No. 3, pp. 767-783. https://doi.org/10.1108/IJLSS-04-2017-0030

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited