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ABC Analysis and Kanban
New Levels of Efficiency
Presented to Western Mass. APICS Chapter #19
By Thomas G. Cantin, CPIM, MBA
Copyright 2015 All rights reserved
What is a Kanban System?
LEAN MANUFACTURING
What is a Kanban System?
• Kanban is a method of Just-In-Time
production that uses standard containers
or lot sizes with a single card attached to
each. It is a pull system in which work
centers signal with a card that they wish to
withdraw parts from feeding operations or
suppliers, indicating the need to replenish
or produce more. A second card may be
used to signal the movement of material.1
1 APICS OMBOK Third Edition
Why do You use a Kanban System?
BECAUSE WE WERE TOLD TO BY THE BOSS
Why do You use a Kanban System?
• Visualize your work
• Reduces your Work in Process (WIP)
• Moves your work along steadily
• Improves your work flow
• Releases your work on demand
• Simplifies your production planning
• Eases your purchase planning
• Increases your Customer Satisfaction
• Eliminates your Employee Confusion
• Minimizes your overproduction risks
Business Process Improvement, Lean Thinking, Top Ten by Chris Andersen, 09/30/2009
GOAL: Reduce Overall Inventory
• Current State:
More than 3,500 SKUs under Kanban control
More than 9.8 million pieces of inventory
More than $1,750,000 tied up in inventory
• Future State:
Only 2,000 SKUs under Kanban control
Just over 3.25 million pieces of inventory
Approximately $600,000 tied up in inventory
Start with Internal Kanbans
• Lot Sizes
• Lead Times
• Pull Intervals
• True Demand
• Service Levels
• Safety Stock
Question Everything!!
MUST BE UNIFORM LOT SIZES
Signals and Triggers
• Keep them as simple as possible
– Same basic logic internal and external
– Make, Move or Buy and POs with releases
• Educate and Communicate
– Everyone who is involved needs to know
– When in doubt, talk about it
MUST BE UNIFORM PULL INTERVALS
Kanban Effectiveness
• When did your company start a kanban
system, and when was the last time it was
audited by anyone?
• Should be audited and reviewed at least
on an annual basis.
• Historical data detailing usage of every
item over the last 12 months is where we
want to begin.
Use Historical Data
ABC Analysis
Optimizing Quantities and Intervals
1. Set an initial goal to cut all quantities and lead
times in half.
2. Force internal and external suppliers to
articulate their specific reasons and obstacles.
3. Remind everyone that reduced quantities will
result in more available capacity.
4. Concentrate on the “vital few” A items to start.
5. Reassure internal and external stakeholders
that everything will be okay.
6. Check in often and correct mistakes made.
What Could Go Wrong?
• Stockouts of items needed by Customers
• Idle Internal Work Centers
• Suppliers with minimal PO activity
– Concerns about the overall business level
– Worries about covering overhead and labor
– Reduced production hours and profitability
– Potential need to lay-off employees
– Hesitance to buy additional raw materials
– Need to look elsewhere for business
Sales Strategies and Seasonality
• Customer order variation (by Segment)
– Incorporating and consuming forecasts
– Quantifying your target service level
• Production lot sizing (by Component Type)
– Lot-for-lot
– Fixed order quantity
• Seasonal Variation
– Are they accounted for in planning,
purchasing, and the kanban design?
Don’t Accept the Status Quo!
EVERYONE HERE TONIGHT HAS THE KNOWLEDGE, SKILL AND ABILITY TO CHANGE THE OUTCOME!
Executive Support
• Understand what their drivers are.
• Use data and specific examples to relate
opportunities and resource allocation,
such as:
– Safety Stock to maintain Service Levels
– Human Capital for Cycle Counting
– Inventory Metrics (Turns, Days or Dollars)
• Try to provide multiple options instead of
simple “Yes” or “No” decisions.
Business Consulting
Education & Training
Professional Services
College Searches
cantinmanagementgroup.com
(413)427-6536

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ABC Analysis and Kanban . . . New Levels of Efficiency

  • 1. ABC Analysis and Kanban New Levels of Efficiency Presented to Western Mass. APICS Chapter #19 By Thomas G. Cantin, CPIM, MBA Copyright 2015 All rights reserved
  • 2. What is a Kanban System? LEAN MANUFACTURING
  • 3. What is a Kanban System? • Kanban is a method of Just-In-Time production that uses standard containers or lot sizes with a single card attached to each. It is a pull system in which work centers signal with a card that they wish to withdraw parts from feeding operations or suppliers, indicating the need to replenish or produce more. A second card may be used to signal the movement of material.1 1 APICS OMBOK Third Edition
  • 4. Why do You use a Kanban System? BECAUSE WE WERE TOLD TO BY THE BOSS
  • 5. Why do You use a Kanban System? • Visualize your work • Reduces your Work in Process (WIP) • Moves your work along steadily • Improves your work flow • Releases your work on demand • Simplifies your production planning • Eases your purchase planning • Increases your Customer Satisfaction • Eliminates your Employee Confusion • Minimizes your overproduction risks Business Process Improvement, Lean Thinking, Top Ten by Chris Andersen, 09/30/2009
  • 6. GOAL: Reduce Overall Inventory • Current State: More than 3,500 SKUs under Kanban control More than 9.8 million pieces of inventory More than $1,750,000 tied up in inventory • Future State: Only 2,000 SKUs under Kanban control Just over 3.25 million pieces of inventory Approximately $600,000 tied up in inventory
  • 7. Start with Internal Kanbans • Lot Sizes • Lead Times • Pull Intervals • True Demand • Service Levels • Safety Stock Question Everything!! MUST BE UNIFORM LOT SIZES
  • 8. Signals and Triggers • Keep them as simple as possible – Same basic logic internal and external – Make, Move or Buy and POs with releases • Educate and Communicate – Everyone who is involved needs to know – When in doubt, talk about it MUST BE UNIFORM PULL INTERVALS
  • 9. Kanban Effectiveness • When did your company start a kanban system, and when was the last time it was audited by anyone? • Should be audited and reviewed at least on an annual basis. • Historical data detailing usage of every item over the last 12 months is where we want to begin.
  • 12. Optimizing Quantities and Intervals 1. Set an initial goal to cut all quantities and lead times in half. 2. Force internal and external suppliers to articulate their specific reasons and obstacles. 3. Remind everyone that reduced quantities will result in more available capacity. 4. Concentrate on the “vital few” A items to start. 5. Reassure internal and external stakeholders that everything will be okay. 6. Check in often and correct mistakes made.
  • 13. What Could Go Wrong? • Stockouts of items needed by Customers • Idle Internal Work Centers • Suppliers with minimal PO activity – Concerns about the overall business level – Worries about covering overhead and labor – Reduced production hours and profitability – Potential need to lay-off employees – Hesitance to buy additional raw materials – Need to look elsewhere for business
  • 14. Sales Strategies and Seasonality • Customer order variation (by Segment) – Incorporating and consuming forecasts – Quantifying your target service level • Production lot sizing (by Component Type) – Lot-for-lot – Fixed order quantity • Seasonal Variation – Are they accounted for in planning, purchasing, and the kanban design?
  • 15. Don’t Accept the Status Quo! EVERYONE HERE TONIGHT HAS THE KNOWLEDGE, SKILL AND ABILITY TO CHANGE THE OUTCOME!
  • 16. Executive Support • Understand what their drivers are. • Use data and specific examples to relate opportunities and resource allocation, such as: – Safety Stock to maintain Service Levels – Human Capital for Cycle Counting – Inventory Metrics (Turns, Days or Dollars) • Try to provide multiple options instead of simple “Yes” or “No” decisions.
  • 17. Business Consulting Education & Training Professional Services College Searches cantinmanagementgroup.com (413)427-6536