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Op#mizing Materials Handling on the Cheap
How to Lean Your Workflow Lori Bowen Ayre January 30, 2014
Infopeople Webinar
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Defining Lean
Lean is a set of concepts, principles, and tools used to create and deliver the most value from the customer’s perspec#ve while consuming the fewest resources.
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Value and Value-‐Add
Lean focuses on effec#vely delivering value to your customer
Value-‐add ac#vi#es • Are ac#vi#es the customer is willing to pay for • Transform the product or service • Must be done correctly the first #me
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Lean focuses on the elimina#on of “waste”
(C) 2013 Jens R. Woinowski, leanself.org; Created with Wordle and GIMP
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How Waste Happens
• Defects • Inventory • Transporta#on • Extra Processing • Wai#ng • Mo#on • Bureaucracy
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Value Stream
All the ac#vi#es, materials, people, and informa#on that must flow and come together to provide your customer the value they want, when they want it and how they want it
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PDCA Improvement Cycle
Process of “leaning your workflow” • Plan: determine goals and needed changes to achieve them
• Do: implement the changes • Check: evaluate the results • Act: standardize and stabilize the change or begin the cycle again
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Lean Library Management by John J. Huber
• Excellent resource for applying Lean ideas to library workflows
• Provides step-‐by-‐step instruc#ons
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Huber Steps to Leaning Your Workflows
1. Form Team 2. Select Value Stream to tackle and set goals 3. Document the process (value stream) 4. Analyze the process to find waste 5. Design new workflow 6. Implement new workflow and analyze results
(measure) 7. Con#nue to make adjustments (con#nuous
improvement)
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Lean is an Organiza#onal Effort • The people who do the work are the experts – they must be involved
• Management support cri#cal • Top Down and Boeom Up
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Define Value Stream in Customer Terms
• Not a Value Stream: processing bookdrop • Value Stream: shorten return to shelf #me (RTS) for bookdrop returns
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Use Value Stream and Process Maps
Value Stream Map – high level view • Designed for leadership (people who can authorize changes)
Process Maps – micro view of each step • Created by people doing the work • Includes:
– Each step of process – Person doing the work – Equipment used – Handoffs – All “wait #mes”
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Process Map SEQ
Process Time (PT)
Lead Time (LT)
1 3 32 Page picks up items off floor 30 303 if media, check disc and contents5 Arrange stacks on bookcarts 10 107 Take book cart to check-‐in workstation 3 38 WAIT (for clerk to be available) 609 Clerk scans each item to check-‐in 30 3010 resensitize11 place on shelving bookcart
12if hold triggered, put slip in book and place on Holds bookcart
Clerk takes Holds cart to high priority shelving staging area 3 3WAIT (for pages who do shelving) 10Page shelves Holds 15 15
Clerk takes outgoing delivery items to delivery bins 6 6Clerk sorts outgoing delivery to bins 8 8
Clerk takes returns to low priority shelving staging area 10 1013 WAIT (for pages who will do shelving) 12015 Page shelves returns to Sorting Shelves 15 1516 WAIT 2160
17 Page (or volunteer )loads books from Sorting Shelves to cart 5 518 Shelve 45 45
TOTAL PROCESS TIME (per cart) 183TOTAL LEAD TIMES 2533
Page gathers 3 bookcarts and take them to bookdrop return areaProcess Steps
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Bookdrop Returns Workflow
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ANALYZE THE PROCESS AND FIND THE WASTE
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Cri#cal Ques#ons for the Team • Do we really need all these steps?
• How can we eliminate all delays and make this process flow? – adjust work assignments
– plan around “peak” volumes
– simplify!
• What equipment changes would make a difference?
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Find Ways to Eliminate… • Excessive walking, reaching, or bending
• Wait #mes and delays • Errors and defects • Handoffs between people
• Transfers of material
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Implement New Workflow and Begin Monitoring Results
• Not as easy as it sounds – may require new equipment – may require training – will undoubtedly require workspace changes
• Make sure you are doing the measurements that will tell you how you are doing – in terms of value to the customer
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FOCUS ON LABOR EFFICIENCY AND PRODUCTIVITY AFTER THE PROCESS HAS BEEN STREAMLINED, BATCH SIZES REDUCED AND LEAD TIMES REDUCED. (Huber)
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CONTINUE TO MAKE ADJUSTMENTS
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Con#nuous Improvement • An important Lean principle because…
– Condi#ons change – Always room for improvement
• Everyone should be looking for those improvements every day
• Many Lean tools to support con#nuous improvement
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VISUAL MANAGEMENT Goal: status of system can be understood at a glance for everyone
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Display Boards Showing Goals and Key Metrics
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Teachers are Naturals at Visual Management!
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Display Board Reveal Problems to Address
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Labeling Work-‐in-‐Progress
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“Sor#ng” Shelves are NOT Visual Management
• Don’t know how bad backlog is
• Wasted steps of shelving and unshelving
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LEAN TOOL: FIVE SS OF EFFICIENCY
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#1 Sort
• Retain, Return, Rid • Only what is needed, in its proper place,
clean and ready to use • When in doubt, move it out
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Tidy Work Space
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#2 Straighten
• Find a place for every essen#al item, delineate it and label it
• A place for everything and everything in its place
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#3 Scrub • Clean work areas make everyone feel beeer,
are safer, and reveal problems
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#4 Systema#ze Keep area • organized • orderly • clean
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# 5 Standardize
• Make this the new status quo • “Standardized Work”
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WHERE LIBRARIES OFTEN GO WRONG
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Bookcart Defines the Batch Size
"Large batches are the result of placing too much emphasis on labor efficiency and not enough on delivery lead #mes or the performance of the service chain as a whole." (Huber)
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Think Differently About Bookcarts
Okay NOT to fill a bookcart • Beeer ergonomically • Limi#ng items on bookcart to smaller batch can reduce need to presort
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Reliance on Staging Areas Libraries use lots of different things for staging:
• Sor#ng carts • Ready to shelve carts • Sor#ng shelves • Stacks • All of the above!
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"Staging areas hide inefficiencies and imbalances between worksta#ons and staff, and they are an open admission
by management that they have designed into the service flow imbalances and delays“ (Huber)
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Lack of Acquisi#ons Master Schedule
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Excep#ons and Expedited Workflows
• Expedited Workflows (holds, media) • Volunteers who choose material they want to shelve instead of what needs to be shelved
• Staff unwilling to pitch in to help when needed
• Very difficult to design a workflow with lots of excep#ons
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Make a Single Workflow
• You should be able to stand in the middle of a process and see where everything is and how everything is doing (U-‐shape)
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Rigid Staff Roles • Surges are a way of life (delivery, holidays, new acquisi#ons)
• Implement flexible job descrip#ons • Cross train staff so they can be more flexible about handling surges
• Seeing the boelenecks and clogs in the flow isn’t useful if you can’t put resources to the task of unclogging
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“If the current organiza#onal structure cannot change, then the processes behind this organiza#onal structure cannot change either” (Huber)
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San Jose Lessons Learned
• Don’t need staging areas for sor#ng • Sort only to top shelves of book carts • Two return slots are beeer than four
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San Jose’s Lean Project
• Time for returned materials back to shelf went from 23 hours to 15 hours
• 20% reduc#on in labor costs • Improved employee produc#vity and morale • Improved space u#liza#on • Staff re-‐assigned to rela#onal work
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San Jose’s 2nd Lean Project
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New Value Stream for Print, Media and Periodicals
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Gesng Started with Lean
• Huber, John J. (2011) Lean Library Management: Eleven Strategies for Reducing Costs and Improving Customer Services, Neal-‐Schuman Publishers, New York.
• Review SJPL Presenta#on (CLA 2012)
• Free webinars from Lean office consultant Karen Mar#n: hep://www.ksmar#n.com/webinars/
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