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Lean Foundations

Continuous Improvement Training

Lean Foundations

Continuous Improvement Training

Value Stream Symbols Value Stream Symbols and Definitionsand Definitions

Addendum

to Value Stream Mapping

Value Stream Symbols Value Stream Symbols and Definitionsand Definitions

Addendum

to Value Stream Mapping

Manufacturing Process

Process Data Box

I

Truck Shipment

Inventory

Material Icons Represents Notes

Outside Sources

One box equals an area of continuousflow. All processes should be labeled.Box also used to identify departmentssuch as production control.

Used to show customers, suppliersand outside manufacturing processes.

WELDING

ABCCOMPANY

C/T=120 sec.C/O=22 min.

3 SHIFTS

3% SCRAPW/T=20 hrs Used to record information concerning

a manufacturing process, department,etc.

Count and time should be noted.225 pieces 1.5 days

Tuesday+ Thurs Note the frequency of shipments.

Material Icons Represents Notes

FIFO

Air Shipment

Movement of prod’nmaterial by PUSH

Movement of finishedgoods to the customer

Supermarket

Physical pull

Transfer of controlledquantities of material between processes in afirst in first out seq.

Create rail or other icons as needed.

Identifies material movements that arepushed by producer, not pulled by the customer ( the following process ).

Also shows movement of raw materialand components from suppliers ifthey are not pushed.

Pull of materials from a supermarket.

Indicates a device to limit quantityand ensure FIFO flow of materialbetween processes.

Information Icons Represents Notes

Manual flow ofinformation

Electronic flow ofinformation

For example: production schedule shipping schedule

For example: EDI, Fax, etc.

OXOX Load leveling

Sequence-Pull Ball

Tool to level the volume and mixof Kanban over a specific periodof time.

Gives permission to produce apredetermined type and quantity.

WeeklySchedule

Information Describes an information flow.

Information Icons Represents Notes

20 Production Kanban

Withdrawal Kanban

Signal Kanban

Kanban post

Tells a process how many of whatcan be produced and gives permissionto do so.

Production instruction that ordersproduction from a batch process,eg: stamping.

Place where Kanban are collectedand held for conveyance .

Tells a process how many of whatcan be withdrawn and gives permissionto do so.

LatheChangeover

General Icons Represents Notes

Kaizen lightning burst

Buffer or safety stock

Highlights critical improvement needsat specific processes. Can be used toplan Kaizen events.

“Buffer” or “Safety Stock” must benoted.

The Lean EnterpriseThe Lean EnterpriseThe Lean EnterpriseThe Lean Enterprise VSM SymbolsVSM Symbols

Lean Foundations

Continuous Improvement Training

Lean Foundations

Continuous Improvement Training