Value stream mapping
Value Steam Mapping
The Value Stream - a definition
“All of the steps required to bring a product or service from raw state through to the customer”
Total Value Stream
Supplier
Process C
Process B
Process A
Customer
Internal Plant
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Value Steam Mapping
What is Value Stream Mapping?
Value Stream Mapping is a powerful technique that allowsus to create a “BIG PICTURE” visual representation of: – All the steps in the process, working back from customer demand to raw material – The flow of both material and information and the effect they have on each other – The distinction between value-added and non-valueadded activity (WASTE) – The effect all of the above have on meeting the customer’s requirements
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Value Steam MappingThe 8 Wastes
Scrap/Rework
Over-production
Inventory
Motion
Processing
Transportation
Under-utilized People Waiting (manpower, material, machine)
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Value Steam Mapping
#1 Scrap/Rework
Definition:
– Any product that does not meet specifications and therefore either needs to be reworked or scrapped
Goal:
– 100% First Time Through Quality
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Value Steam Mapping#2 Over-production (Under)
Definition:
– Producing more than is necessary, often causing WIP (Work In Process); working on parts ahead of schedule while delinquent parts wait
Goal:
– Produce to Target Cycle Time then eventually produce all operations to Takt Time in the Future State
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Value Steam Mapping
# 3 Inventory
Definition: material or parts that are stored for futureuse or shipment
Before
After
If you had only 30 seconds to find the unit… ...which storage system would you choose?
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Value Steam Mapping
#4 Motion
Definition:
– Excessive motion beyond what is needed to get the job done
Goal:
Same as Definition
???
sitting
searching
turning around
walking
climbing
choosing
bending lying down over
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Value SteamMapping
#5 Processing (Over & Under)
Definition:
– Extra and/or unnecessary operations – Standardization of operations not thorough enough – Processing a part above specifications
Goal:
– Process parts that consistently meet the minimum customer requirements 100% of the time
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Value Steam Mapping
#6 Transportation
Definition:
– Moving parts to unnecessary distances from oneoperation to another
Goal:
– Put operations in order; minimize or eliminate the travel distance between them
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Value Steam Mapping
#7 Waiting
Definition:
– a person or part(s) sitting idle while waiting for material, a supervisor, the next operation, etc.
Goal:
– Eliminate the unplanned interruptions that occur due to inefficiencies – Develop continuous flow wherever possible –Convert waiting to valueadded work
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Value Steam Mapping
#8 Under-utilized People
Definition:
– Skills untapped, Ideas not implemented and improvements not realized
Goal:
– Tap into the energies and unused improvement ideas from the workforce
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Value Steam Mapping
Exercise Worksheet
MANUFACTURING WASTES IDENTIFICATION SHEET
Dept: _______________
TransportationUnder-utilized People Scrap/Rework Over (Under) Production Processing
5S - Sort, Straighten, Sweep, Standardize & Self Discipline
Inventory
NO.
WASTE IDENTIFIED
John McLauchlin
Revision Date: 4/25/2000
Waiting
Motion
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Value Steam Mapping
Value Stream Analysis Process
Value Stream Mapping 1.0 Select Champion and Initial Product Family 2.0 Gather, Map, and Analyze SelectedValue Stream Data 3.0 Design Future State 4.0 Implementation Planning and Execution
1. Understand business goals and customer objectives 2. Select champion and value stream leaders based on proven criteria for success 3. Define product families based on common processes and equipment
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Value Steam Mapping
Leadership and Champions
Observations
Lean Aerospace Initiative
– A...
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