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Introduction
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The Process Structure Diagram (PSD) is a tool to present processes and algorithms in a structured and graphical way.
A PSD is characterized by its high level of structure. The integrity of process described in a PSD high. Therefore the PSD is a powerful tool to support the design of processes.
By its nature, the PSD also visualises the relation between several (sub)processes and thus allows the design of multi-process systems.
An other name for PSD is Nassi-Schneider diagram.
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Why should we use PSD?
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Benefits of using the PSD are:
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high level of structure
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complex processes visualized in a simple diagram
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easy to understand
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PSD shows gaps in an existing process
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by simulating a new process with PSD mistakes are discovered early in the design stage
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within a PSD other PSDs can be started without losing overview
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of each PSD only one version exists: when a PSD is changed or updated these changes are applied directly to all processes where this PSD is used
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not only a graphical tool but also a powerful design tool
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When should we use PSD
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1. After Makigami process analysis
2. After Value Added Activity Analysis
3. “Greenfield”, when designing a new process
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What does it look like?
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In a very compact way the PSD describes a complete (business)process. Here an example of an order-intake process
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PSD
