Mapeo
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Value Stream Mapping Definition
• Value Stream Mapping (VSM):
– Special type of flow chart that uses symbols known as "the language of Lean" to depict and improve the flow of inventory and information.
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Value Stream Mapping Purpose
• Provide optimum value to the customer through a complete value creation process with minimum waste in:
– Design (concept tocustomer) – Build (order to delivery) – Sustain (in-use through life cycle to service)
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Why ?
• Many organizations pursuing “lean” conversions have realized that improvement events alone are not enough • Improvement events create localized improvements, value stream mapping & analysis strengthens the gains by providing vision and plans that connect all improvement activities • Valuestream mapping & analysis is a tool that allows you to see waste, and plan to eliminate it
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What Is Value?
• A capability provided to a customer
– of the highest quality, – at the right time, – at an appropriate price,
as defined by the customer.
• "Value" is what the customer is buying
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What Is Value Stream Analysis?
Planning tool to optimize results of eliminating wastecurrent state VSM future state VSM
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Lean Basics
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Value Steam Mapping Steps
Next Future State
Future State
Current State
Original State
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Apply Five Simple Principles
• Specify value from the standpoint of end customer • Identify the value stream for each product family • Make the product flow • So the customer can pull • As you manage toward perfection VALUEPerfection
VALUE STREAM
PULL
FLOW
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What is the Value that Flows?
Specify value from the standpoint of the end customer Ask how your current products and processes disappoint your customer’s value expectation:
• • • • • price? quality? reliable delivery? rapid response to changing needs? ???
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What Flows?
"ITEMS" flow through a value stream
– In manufacturing, materialsare the items – In design & development, designs are the items – In service, external customer needs are the items – In admin., internal customer needs are the items Analysis begins with part of a total value stream, That part of the value stream has customers too
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Value Stream Mapping Process Symbols
Customer/Supplier Icon: represents the Supplier when in the upper left, customer when inthe upper right, the usual end point for material Dedicated Process flow Icon: a process, operation, machine or department, through which material flows. It represents one department with a continuous, internal fixed flow. Shared Process Icon: a process, operation, department or workcenter that other value stream families share.
Data Box Icon: it goes under other icons that have significantinformation/data required for analyzing and observing the system.
Workcell Icon: indicates that multiple processes are integrated in a manufacturing workcell.
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Value Stream Mapping Material Symbols
Inventory Icons: show inventory between two processes Shipments Icon: represents movement of raw materials from suppliers to the Receiving dock/s of the factory. Or, the movement of finishedgoods from the Shipping dock/s of the factory to the customers Push Arrow Icon: represents the “pushing” of material from one process to the next process.
Supermarket Icon: an inventory “supermarket” (kanban stockpoint).
Material Pull Icon: supermarkets connect to downstream processes with this "Pull" icon that indicates physical removal.
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Value Stream Mapping Material Symbols (Cont.)FIFO Lane Icon: First-In-First-Out inventory. Use this icon when processes are connected with a FIFO system that limits input.
Safety Stock Icon: represents an inventory “hedge” (or safety stock) against problems such as downtime, to protect the system against sudden fluctuations in customer orders or system failures. External Shipment Icon: shipments from suppliers or to customers using...
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