Lean Six Sigma: DMAIC Improve Phase

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

During the Improve phase of DMAIC, what is the initial focus after determining the root causes?

  • Selecting the best solution to implement immediately.
  • Identifying potential solutions to address the problem. (correct)
  • Implementing pilot process changes to test solutions.
  • Developing improvement plans without generating new solutions.

What is the primary goal of the Improve phase in the DMAIC process?

  • To analyze the data collected and identify the root cause of a problem.
  • To define the problem and project goals.
  • To measure the baseline performance of a process.
  • To identify and implement a solution that addresses the problem. (correct)

What does the concept of 'continuous flow' in Lean Six Sigma aim to achieve?

  • Moving material from one value-added process to the next without delays. (correct)
  • Adding people to a process only when the demand decreases significantly.
  • Introducing transport time and storage in buffers between value-added processes.
  • Organizing processes so multiple people handle different steps of the same task.

Which of the following best describes a key characteristic of continuous flow processing?

<p>Each item is processed and moved to the next step immediately. (A)</p> Signup and view all the answers

What is the most important consideration when deciding whether to implement a 'pull' system?

<p>Ensuring that all steps are balanced and that you understand your inventory levels. (C)</p> Signup and view all the answers

Which of the following scenarios exemplifies a 'pull' system in operation?

<p>A customer purchasing a can of soup, leading to stock replenishment. (B)</p> Signup and view all the answers

If a bottleneck is identified in a process, which of the following is the LEAST effective measure to address it?

<p>Ensuring the bottleneck resource is always utilized without breaks. (B)</p> Signup and view all the answers

Which option accurately describes the role of a Kanban in a pull system?

<p>It signals the need for more resources or materials, ensuring continuous production flow. (D)</p> Signup and view all the answers

Which of the following is LEAST likely to be a type of Kanban signal?

<p>A detailed production schedule. (D)</p> Signup and view all the answers

Which Kanban type is specifically used to order materials in advance of a process?

<p>Material Kanban. (C)</p> Signup and view all the answers

Why is it essential to review the number of Kanban issued periodically in a production system?

<p>To maintain system efficiency and avoid overproduction or shortages. (D)</p> Signup and view all the answers

A company wants to implement a Kanban system but is unsure how many Kanban will be required. The lead time is 2 hours, Takt time is 30 minutes, and quantity per Kanban is 10 parts. Using the formula (Lead time / TAKT time) / Parts per Kanban + "X" = # of Kanbans needed, and not including any allowance factor 'X', how many Kanban are required?

<p>0.6 Kanban (C)</p> Signup and view all the answers

When determining the 'pitch' in a Kanban system, what factor is MOST important?

<p>The number of parts in a standard container or most convenient material handling quantity. (A)</p> Signup and view all the answers

If a Kanban system is not performing as expected, what is the most appropriate initial response?

<p>Make changes and try again, as the limits are set by humans. (B)</p> Signup and view all the answers

Which of the following is MOST reflective of the ideal material and information flow in a Lean environment?

<p>Producing to demand, creating one process at a time. (A)</p> Signup and view all the answers

Why is reducing changeover time important in Lean manufacturing?

<p>To enable smaller batch sizes and respond quickly to customer needs. (A)</p> Signup and view all the answers

What constitutes changeover time?

<p>The time between the last good part from one run until the first good part from the next run. (D)</p> Signup and view all the answers

What is the initial step in minimizing machine downtime during changeovers?

<p>Videtaping the existing changeover process. (A)</p> Signup and view all the answers

Why might a company want to reduce changeover time?

<p>The 'sweet spot' is when inventory and changeover costs are equal. (C)</p> Signup and view all the answers

What is the first step of an 8 step process?

<p>Distinguish between internal and external elements. (C)</p> Signup and view all the answers

Which of the following is a benefit of quicker changeover and set up times?

<p>Less inventory costs. (C)</p> Signup and view all the answers

What is the primary aim of Total Productive Maintenance (TPM)?

<p>To keep equipment running by creating equipment-knowledgeable and engaged teams. (C)</p> Signup and view all the answers

When identifying which equipment should have total overhauling, what is the most important question to ask?

<p>What equipment, if it is down for a long time, can shut down your process? (C)</p> Signup and view all the answers

What does Overall Equipment Effectiveness (OEE) measure?

<p>Measure of overall equipment efficiency. (A)</p> Signup and view all the answers

What foundational element underpins Total Productive Maintenance (TPM)?

<p>The 5S methodology focused on workplace organization. (D)</p> Signup and view all the answers

In the 5S methodology, what is the purpose of 'Seiri' (Sort)?

<p>Removing unnecessary items from the work area. (A)</p> Signup and view all the answers

Which 5S principle is focused on making sure everyone uses the same process to standardize terms and processes?

<p>Seiketsu (Standardize). (A)</p> Signup and view all the answers

What is the ultimate goal of Error Proofing?

<p>To reduce defects by preventing or minimizing the impact of human error. (B)</p> Signup and view all the answers

Which tool is described as 'simple, inexpensive failure proofing devices'?

<p>Poka-Yoke (C)</p> Signup and view all the answers

Which of the following is LEAST likely to cause for human or process errors?

<p>Trained operators. (C)</p> Signup and view all the answers

What is a 'facilitation' solution.

<p>Providing the right environment or characteristic of an operation for a person to be most successful. (A)</p> Signup and view all the answers

What is the first recommended step that occurs for forming solutions?

<p>Re-evaluate your project team and stakeholders. (A)</p> Signup and view all the answers

When should companies use the Six Sigma tool?

<p>When a classic six sigma approach is needed. (A)</p> Signup and view all the answers

Of the following, what is an example of visual management?

<p>Employees are able to quickly visually determine what needs to be done on daily occurrences. (C)</p> Signup and view all the answers

Of the following, what is the most important part of maintaining a team and its success?

<p>Ensure the people on the team are empowered to make decisions. (D)</p> Signup and view all the answers

What is a Kaizen event?

<p>A rapid, short-term project that will help make quick improvements for a team. (C)</p> Signup and view all the answers

In the Improve phase of DMAIC, after developing potential solutions, what should be the team's next focus?

<p>Selecting and prioritizing the best solutions to implement. (A)</p> Signup and view all the answers

What is a key benefit of organizing processes such that one person can build an entire product?

<p>It allows for easy scaling by adding more people as volume increases. (C)</p> Signup and view all the answers

When deciding where to implement continuous flow processing, what is the most important factor?

<p>The ability to flow where you can, and pull where you can't. (D)</p> Signup and view all the answers

In a pull system, what action does a supermarket employee take when a customer buys a can of soup from the shelf?

<p>The employee replenishes the stock to refill the shelf's space. (B)</p> Signup and view all the answers

Which of the following characteristics is LEAST likely to be found at the end of the producer's line area in a pull system?

<p>A high amount of raw materials waiting to be worked. (D)</p> Signup and view all the answers

Which statement best describes a managed buffer's role in relation to a bottleneck?

<p>It ensures the bottleneck always has work available. (A)</p> Signup and view all the answers

Which of the following Kanban types authorizes the movement of goods?

<p>Withdrawal Kanban (C)</p> Signup and view all the answers

What is the primary reason for attaching a Kanban to actual parts in a pull system?

<p>To control and limit Work in Progress (WIP) and prevent overproduction. (A)</p> Signup and view all the answers

In determining Kanban Size in parts, what happens if you use a Takt time based on theoretical values instead of cycle time?

<p>There will likely be too few Kanban. (A)</p> Signup and view all the answers

In a Kanban system, what does 'pitch' refer to?

<p>The quantity of parts in a container the material handler finds most convenient. (B)</p> Signup and view all the answers

If Kanban levels are not set properly, what is the best course of action to take?

<p>Make changes and try again. (A)</p> Signup and view all the answers

What is the result of initiating a pull system without first attempting to implement flow?

<p>Potential wasted inventory to create unnecessary supermarkets. (A)</p> Signup and view all the answers

What is the purpose of reducing changeover time?

<p>Increase the number of changeovers that can be performed. (B)</p> Signup and view all the answers

What does changeover time encompass?

<p>The time between the last good part from 1 run, until the first good part from the next run. (A)</p> Signup and view all the answers

When trying to minimize machine downtime during changeovers, what is the first action to take?

<p>Separate internal changeover from external changeover. (A)</p> Signup and view all the answers

Which of the following is a goal for Set Up Reduction?

<p>To achieve smaller lots resulting in less chance of defects being produced before being identified (B)</p> Signup and view all the answers

What is the overall philosophy of total productive maintenance?

<p>Keeping equipment running by using a series of methods. (B)</p> Signup and view all the answers

When implementing TPM, what is a key strategic goal related to equipment?

<p>Building well-engineered equipment in building and safety. (A)</p> Signup and view all the answers

What should be considered when identifying 'critical' equipment for TPM?

<p>Which equipment can halt the production process due to downtime. (D)</p> Signup and view all the answers

What does the 'availability' metric measure in Overall Equipment Effectiveness (OEE)?

<p>The ratio of uptime to loading time. (B)</p> Signup and view all the answers

What is the foundation of the TPM deployment process?

<p>5S foundation. (A)</p> Signup and view all the answers

What is the main objective when applying the 5S methodology?

<p>To make abnormalitіes visible. (B)</p> Signup and view all the answers

How does the 'Seiton' (Set in Order) principle of the 5S methodology primarily contribute to workplace efficiency?

<p>By arranging tools and materials for quick access and retrieval. (A)</p> Signup and view all the answers

What is the purpose of creating sustainment in 5S?

<p>To create improvement through regular commitment (A)</p> Signup and view all the answers

What is Error Proofing seeking to reduce?

<p>Defects (C)</p> Signup and view all the answers

What is a key shift in focus for successful Error Proofing?

<p>From the individuals to the operators (B)</p> Signup and view all the answers

Which of the following statements best describes the goal of Error Proofing in work operations?

<p>Improve Work Operations to Fit People (D)</p> Signup and view all the answers

In error proofing, what is the primary goal when focusing on a process?

<p>Preventing error from occurring. (D)</p> Signup and view all the answers

What was the contribution of Shigeo Shingo in the field of error proofing?

<p>Developing the concept of Poka-yoke. (A)</p> Signup and view all the answers

What is the primary goal of 'Poka-yoke'?

<p>Reducing the worker's mental and physical burden (A)</p> Signup and view all the answers

When error-proofing a process, what should be the first solution considered, according to the principles of mistake-proofing?

<p>Elimination (C)</p> Signup and view all the answers

What is 'facilitation' in the context of error proofing?

<p>Adjusting the environment. (D)</p> Signup and view all the answers

Why is it crucial to involve stakeholders with a RACI chart at the start of the Improve phase?

<p>To ensure that the appropriate type and level of commitment is present. (B)</p> Signup and view all the answers

When generating solutions in the improve phase with your team, which of the following questions need to be asked?

<p>What are the potential benefits to the employees? (C)</p> Signup and view all the answers

In which activity can a SCAMPER Technique be greatly utilized?

<p>Generating solution ideas. (A)</p> Signup and view all the answers

If you want to use Six Sigma tools, what question should you ask?

<p>Is there Common cause? (C)</p> Signup and view all the answers

What is a defining trait of visual management?

<p>Self-explaining (B)</p> Signup and view all the answers

How should action items be defined in cross-functional teams?

<p>From a team or individual of all functions working on the change. (A)</p> Signup and view all the answers

What is the goal of visual management in the workplace?

<p>To have a clear visual flow to help determine progress. (C)</p> Signup and view all the answers

What is the primary focus of a Kaizen event?

<p>Removing waste and improving waste. (A)</p> Signup and view all the answers

What is the typical first step in executing a full-scale implementation plan for fixes developed during the Improve phase?

<p>Pilot testing the solutions on a small scale to collect initial data. (D)</p> Signup and view all the answers

In a continuous flow system, if there is a marked increase in the demand, what is the appropriate action?

<p>Increase the number of people working to match the increased demand. (D)</p> Signup and view all the answers

What fundamental principle must be in place before a 'pull' system can effectively operate?

<p>Perfectly balanced steps so they are level with each other. (D)</p> Signup and view all the answers

Which type of Kanban is used to signal the need to produce more goods, based on consumption?

<p>Production Kanban. (A)</p> Signup and view all the answers

What is the MAIN objective of reviewing Kanban levels in a pull system?

<p>To maintain the appropriate flow and avoid starving the line. (C)</p> Signup and view all the answers

What could happen if you implement material and information flow by producing to forecasting instead of producing to customer demand?

<p>An increase in inventory levels may occur. (A)</p> Signup and view all the answers

What is an important consideration when making adjustments to improve set up times?

<p>Ensure that employees are well equiped. (A)</p> Signup and view all the answers

When strategically implementing Total Productive Maintenance (TPM), which goal is most important for extending the life and performance of equipment?

<p>Ensuring equipment operators can troubleshoot minor issues. (D)</p> Signup and view all the answers

Which of the 5S pillars creates the standards and checklists?

<p>Standardize. (B)</p> Signup and view all the answers

The philosophy of focusing on improving work operations to make them 'fit people' comes from which strategy?

<p>Error Proofing. (A)</p> Signup and view all the answers

The primary goal of the DMAIC Improve phase is to generate potential solutions without prioritizing them.

<p>False (B)</p> Signup and view all the answers

In continuous flow, processes are organized so that multiple people work on different parts of the same item.

<p>False (B)</p> Signup and view all the answers

In a 'push' system, items are only produced when the next operation or customer requires them.

<p>False (B)</p> Signup and view all the answers

A 'pull' system is analogous to how a supermarket operates, where stock is replenished as it's consumed.

<p>True (A)</p> Signup and view all the answers

A bottleneck does not exists in every process.

<p>False (B)</p> Signup and view all the answers

Kanban signals do not include information about where the product is needed.

<p>False (B)</p> Signup and view all the answers

In Kanban, the number of issued kanbans should be reviewed only after a major process change.

<p>False (B)</p> Signup and view all the answers

Pitch is a measure of how many kanbans are released at a time.

<p>False (B)</p> Signup and view all the answers

Kanban implementation focuses on increasing inventory levels regardless of demand.

<p>False (B)</p> Signup and view all the answers

The ultimate goal of reducing changeover time is to decrease the number of changeovers performed.

<p>False (B)</p> Signup and view all the answers

Reducing changeover times primarily benefits internal operations, with minimal impact on customer demands.

<p>False (B)</p> Signup and view all the answers

In SMED (Single Minute Exchange of Dies), the goal is to eliminate external elements.

<p>False (B)</p> Signup and view all the answers

During the setup process, finding and transporting tools do not add extra time to the process.

<p>False (B)</p> Signup and view all the answers

TPM is mainly focused on reacting to equipment failures rather than preventing them.

<p>False (B)</p> Signup and view all the answers

The primary goal of TPM is to control equipment breakdowns.

<p>False (B)</p> Signup and view all the answers

Overall Equipment Effectiveness (OEE) solely measures machine uptime without considering performance or quality.

<p>False (B)</p> Signup and view all the answers

TPM only applies to the production line, not administrative functions.

<p>False (B)</p> Signup and view all the answers

5S is primarily a housekeeping program focused solely on cleaning.

<p>False (B)</p> Signup and view all the answers

The 5S methodology ensures workplace safety without improving efficiency.

<p>False (B)</p> Signup and view all the answers

Error proofing focuses on blaming individuals for mistakes in the process.

<p>False (B)</p> Signup and view all the answers

Error proofing seeks to increase waste (rework).

<p>False (B)</p> Signup and view all the answers

Machines are not capable of making errors.

<p>True (A)</p> Signup and view all the answers

Preventing the error from occuring or minimizing the affect of it once it occurs will help an organizations bottom line.

<p>True (A)</p> Signup and view all the answers

Poka-yoke devices are usually highly sophisticated and complex.

<p>False (B)</p> Signup and view all the answers

Jidoka implies that workers and machines do not have the capacity to identify errors.

<p>False (B)</p> Signup and view all the answers

The 'involvement matrix' helps prioritize stakeholders, regardless of their ability to impact project outcomes.

<p>False (B)</p> Signup and view all the answers

When evaluating solutions, limiting resources available may be considered.

<p>True (A)</p> Signup and view all the answers

A RACI chart does not aid in developing a brainstorm list of project stakeholders.

<p>False (B)</p> Signup and view all the answers

Potential solutions should not be cheked against common sense.

<p>False (B)</p> Signup and view all the answers

The 'Quick and Dirty' approach to brainstorming ideas states that individuals should think like adults.

<p>False (B)</p> Signup and view all the answers

Multivoting does not weigh cirteria.

<p>False (B)</p> Signup and view all the answers

Visual management helps makes a workplace harder to understand.

<p>False (B)</p> Signup and view all the answers

Quality, not quantity, is a type of Performance Metric within visual managment.

<p>False (B)</p> Signup and view all the answers

Functional teams, not Cross-functional teams, are excellent improvement tools.

<p>False (B)</p> Signup and view all the answers

It does not matter whose on the team when trying to improve and area.

<p>False (B)</p> Signup and view all the answers

Tiger Teams focus on Long-term fixes.

<p>False (B)</p> Signup and view all the answers

It does not matter whether a work area will formally or informaly agree on the proccess within the work area.

<p>False (B)</p> Signup and view all the answers

Kaizen Events are typically 10-15 days with 50-75 people involved.

<p>False (B)</p> Signup and view all the answers

Kaizen events should not plan next RIEs and follow-on activities.

<p>False (B)</p> Signup and view all the answers

Focus of removing waste should not be implemented during a Kaizen event.

<p>False (B)</p> Signup and view all the answers

Team brainstorming during the DMAIC Improve phase primarily focuses on eliminating waste.

<p>False (B)</p> Signup and view all the answers

The Improve phase aims to brainstorm solutions without piloting process changes.

<p>False (B)</p> Signup and view all the answers

The DMAIC Improve phase prioritizes measuring results before developing potential solutions.

<p>False (B)</p> Signup and view all the answers

In Continuous Flow, processes are designed so multiple individuals each handle one specific task.

<p>False (B)</p> Signup and view all the answers

In continuous flow processing, work-in-progress inventory can increase, if demand increases.

<p>True (A)</p> Signup and view all the answers

In continuous flow processing, only one unit is worked as raw materials is converted into finished goods.

<p>True (A)</p> Signup and view all the answers

In continuous product flow, overproduction is acceptable as long as more products are being created.

<p>False (B)</p> Signup and view all the answers

Pull systems operate efficiently without any buffers or inventory.

<p>False (B)</p> Signup and view all the answers

In Push systems, products are only sent to the next operation if the customer has put in a request.

<p>False (B)</p> Signup and view all the answers

Push systems minimize inventory by producing items at the last possible minute.

<p>False (B)</p> Signup and view all the answers

A 'pull system' production is based on downstream consumer demand.

<p>True (A)</p> Signup and view all the answers

The stock person in a pull system will bring out all the products they can, which may not always be accommodated by the shelf.

<p>False (B)</p> Signup and view all the answers

In a pull system, the supermarket contains only the varieties of completed parts.

<p>True (A)</p> Signup and view all the answers

Material in a pull system is staged at the producer’s line.

<p>False (B)</p> Signup and view all the answers

A bottleneck increases the flow of the entire process.

<p>False (B)</p> Signup and view all the answers

High WIP (work in progress) can accurately reveal the location of the bottleneck.

<p>False (B)</p> Signup and view all the answers

Buffers before bottlenecks are generally discouraged, negatively affecting the flow.

<p>False (B)</p> Signup and view all the answers

In Kanban systems, authorization to produce is not part of the signals.

<p>False (B)</p> Signup and view all the answers

Signals in a kanban system only take the form of paper cards for tracking production.

<p>False (B)</p> Signup and view all the answers

A withdrawal Kanban authorizes production of goods.

<p>False (B)</p> Signup and view all the answers

In Kanban, kanbans must be attached to manufactured parts, the pull signal must be removed from the material as soon as the first piece is removed from the container.

<p>True (A)</p> Signup and view all the answers

Takt time is used for actual calculations of Kanban amounts, while cycle time is used for theoretical calculations.

<p>False (B)</p> Signup and view all the answers

If you need to account for weather delays to protect a customer's order from not being filled, your "X" factor should decrease to account for this variability.

<p>False (B)</p> Signup and view all the answers

Kanban pitch is calculated by multiplying Takt Time by number of kanbans.

<p>False (B)</p> Signup and view all the answers

A kanban is a self-sufficient tool that requires no human adjustments.

<p>False (B)</p> Signup and view all the answers

Introducing a pull system without establishing continuous flow minimizes supermarketing issues.

<p>False (B)</p> Signup and view all the answers

In a true pull system, If you DO NOT explicitly limit your WIP, it is a pull system.

<p>False (B)</p> Signup and view all the answers

SMED aims to minimize changeover time, reducing the interval between the last good part of one run and the first good part of the next run.

<p>True (A)</p> Signup and view all the answers

In order to reduce setup time, external activities should be done during the machine down time to minimize the number of activities.

<p>False (B)</p> Signup and view all the answers

Decreasing changeover times increases the need for inventory.

<p>False (B)</p> Signup and view all the answers

When setting up tools, bolts, and nuts do not add to the changeover time.

<p>False (B)</p> Signup and view all the answers

One activity to reduce setup time is eliminating external elements.

<p>False (B)</p> Signup and view all the answers

TPM primarily focuses on maximizing enthusiasm rather than Overall Equipment Effectiveness (OEE).

<p>False (B)</p> Signup and view all the answers

TPM focuses on reactive maintenance rather than proactive identification of potential equipment problems.

<p>False (B)</p> Signup and view all the answers

In TPM, a key measure of performance efficiency calculates uptime divided by downtime.

<p>False (B)</p> Signup and view all the answers

5S is primarily a cleaning program that does not include elements of a waste-elimination program.

<p>False (B)</p> Signup and view all the answers

In Japanese Seiketsu refers to ensure workspace is clean and well maintained.

<p>False (B)</p> Signup and view all the answers

While error-proofing reduces errors, it does not rely on data analysis or standard work.

<p>False (B)</p> Signup and view all the answers

Error proofing focuses to punish those who make mistakes.

<p>False (B)</p> Signup and view all the answers

Poka-yoke focuses on shifting accountability from the process of management to the operators themselves, allowing for a easier more streamlined process.

<p>False (B)</p> Signup and view all the answers

The primary goal of the DMAIC Improve phase is to analyze existing processes and identify bottlenecks.

<p>False (B)</p> Signup and view all the answers

In continuous flow, processes are designed so that multiple people always work together on each step of the process.

<p>False (B)</p> Signup and view all the answers

In a 'push' system, production is driven by actual customer demand, while in 'pull' systems, production is based on anticipated demand.

<p>False (B)</p> Signup and view all the answers

Kanban cards are used to signal what, when, where, and how many of a product should be produced.

<p>True (A)</p> Signup and view all the answers

Bottlenecks are easier to manage when you can maintain excess inventory before the bottleneck.

<p>True (A)</p> Signup and view all the answers

The TAKT time is used for calculations in a work flow, while the cycle time is used in theoretical calculations.

<p>False (B)</p> Signup and view all the answers

Reducing changeover times allows a company to reduce the number of planned changeovers.

<p>False (B)</p> Signup and view all the answers

External changeover tasks must take place while the machine is down.

<p>False (B)</p> Signup and view all the answers

In TPM, you may have a TPM in administration.

<p>True (A)</p> Signup and view all the answers

Within the 5S methodology, 'Sustain' refers to ensuring the tools in your workspace are clean and well maintained.

<p>False (B)</p> Signup and view all the answers

Flashcards

DMAIC Improve phase goal

The goal of the DMAIC Improve phase is to identify a solution to the problem

Continuous Flow

Movement of material from value-added process to value-added process without transport time or storage in buffers.

Basic Rule of flow

Making product FLOW through the process

Push System

Producing everything they can, as quickly as they can, even if the next step isn't ready.

Signup and view all the flashcards

Pull System

Produce only what the next process needs and only when it needs it.

Signup and view all the flashcards

Bottleneck

Any resource whose capacity limits the flow of information or materials.

Signup and view all the flashcards

Kanban

Special product identification which signals what, when, where, how many products are needed

Signup and view all the flashcards

Elements of Pull system

Supermarket located at end of producer's line. All varieties of completed parts, with quantity is based on sized lots.

Signup and view all the flashcards

Production Kanban

Authorizes production of goods.

Signup and view all the flashcards

Withdrawal Kanban

Authorizes movement of goods.

Signup and view all the flashcards

Pitch Time

TAKT Time (or Cycle Time) multiplied by Quantity Kanban.

Signup and view all the flashcards

Aim of Set Up Reduction

Reduce the set up time to the lowest possible amount.

Signup and view all the flashcards

Changeover Time

The time between the last good part from one run until the first good part from the next run

Signup and view all the flashcards

Key to Quick Changeover

Minimizing time that the machine must be down

Signup and view all the flashcards

Total Production Maintenance (TPM)

A series of methods to keep equipment running

Signup and view all the flashcards

5S Benefits

Structured for a clean, well-organized workspace eliminating abnormalities.

Signup and view all the flashcards

Error proofing

Eliminates error prone activities which reduces defects in operation.

Signup and view all the flashcards

Facilitation

Adjust the environment or operation to enable a person to be successful

Signup and view all the flashcards

Objective for forming possible solutions

Method in finding potential solutions for confirmed root cause. Select the best solution option to develop and implement.

Signup and view all the flashcards

Root Cause Analysis

Technique for identifying the underlying causes of problems

Signup and view all the flashcards

PDCA Cycle

A cyclical process for continuous improvement and problem-solving

Signup and view all the flashcards

Lean

A strategy aimed at minimizing waste while maximizing productivity

Signup and view all the flashcards

Kaizen

A continuous improvement approach involving all employees

Signup and view all the flashcards

Less Chance for Error

To achieve smaller lots reducing chance of defects before being identified

Signup and view all the flashcards

Effective Solutions

A structured approach can lead to effective solutions that improve the baseline measure and the customer experience.

Signup and view all the flashcards

Key steps of the Improve Phase

  1. Develop potential solutions. 2. Select and prioritize the best solutions. 3. Develop improvement plans. 4. Pilot and implement the chosen solution(s). 5. Develop and execute full-scale implementation plan to deploy fixes. 6. Measure results.
Signup and view all the flashcards

Continuous Flow defined

Movement of material from value-added process to value-added process without transport time or storage in buffers

Signup and view all the flashcards

Batch-and-Queue vs. Continuous Flow

Batch-and-Queue involves processing items in groups and moving them in batches between steps. Continuous Flow involves processing items one at a time, moving them immediately to the next step in the process.

Signup and view all the flashcards

Pull vs. Push

A pull system limits WIP, while a push system does not.

Signup and view all the flashcards

Kanban board

A board that visually signals what, when, where, and how many products are needed.

Signup and view all the flashcards

Material Kanban

Authorizes production movement of goods.

Signup and view all the flashcards

Kanban Quantity

Quantity per Kanban. It's the smallest number of parts or most convenient material handling.

Signup and view all the flashcards

Material/Information Flow

Develop continuous flow; use supermarkets to control upstream processes; send customer pulls to only one internal process; distribute production evenly.

Signup and view all the flashcards

SMED

A systematic approach to reducing changeover time, increasing flexibility, and improving equipment utilization.

Signup and view all the flashcards

Production Changeover

Changing over production machinery in order to manufacture different products occurs frequently on lines.

Signup and view all the flashcards

SMED focus

The key is separating internal from external tasks.

Signup and view all the flashcards

Decrease Changeover

Can reduce the need for inventory; gives more production flexibility; enables a faster response to customer needs.

Signup and view all the flashcards

Goals of TPM

TPM process goals: Develop people who are equipment-knowledgeable; create well-engineered equipment; create an environment where enthusiasm and creativity flourish.

Signup and view all the flashcards

Benefit of a Pull System

Eliminates waste of handling and storage, based on low inventory and management by sight.

Signup and view all the flashcards

Visual Management

Visual aids that allow performance conditions to be understood.

Signup and view all the flashcards

5S structured

A structured and easy to understand method for creating a clean and well-organized workplace.

Signup and view all the flashcards

The 5 S's

Sort, Set in Order, Shine, Standardize, Sustain.

Signup and view all the flashcards

Poka-yoke Idea

It's a method to eliminate the chance of error from occurring.

Signup and view all the flashcards

TPM system

A system for managing safety and environmental issues.

Signup and view all the flashcards

Kaizen continuous

A continuous improvement approach involving all employees.

Signup and view all the flashcards

Study Notes

  • This study material focuses on the Improve phase within the DMAIC (Define, Measure, Analyze, Improve, Control) model used in Lean Six Sigma projects.
  • The Improve phase aims to identify and implement solutions to problems.
  • Forming Solution Options, then Selecting the Right Tools before Deploying Change.

Key Steps of the Improve Phase

  • Develop potential solutions through brainstorming.
  • Select and prioritize the best solutions for implementation.
  • Develop detailed improvement plans.
  • Pilot and implement the chosen solutions on a small scale.
  • Develop and execute a full-scale implementation plan.
  • Measure the results to make sure the solution's effective and provides metrics.

Questions to Address

  • Identify all possible solutions to the problem.
  • Determine which solutions are most likely to achieve the desired outcome.
  • Decide when, where, and how to implement the solutions effectively.
  • Define how the success of the Improve phase will be measured.

DMAIC Model

  • DMAIC is a systematic approach to problem-solving and process improvement used in Lean Six Sigma.
  • DMAIC roadmap consists of Define, Measure, Analyze, Improve, and Control.
  • Define: Project goals and scope are defined.
  • Measure: Gathers baseline data, establishes project charter, establishes voice of the customer and plans a project.
  • Analyze: Analyzes data and identifies root causes of the problem.
  • Improve: Generates potential solutions, evaluates, and implements the best solution to address root causes and optimize the customer experience
  • Control: Control the Process & Validate project benefits.

Key Concepts

  • Continuous Flow: Movement of material from value-added process to value-added process, without transport time or storage in buffers.
  • Batch-and-Queue Processing: Producing items in batches and then waiting for the next step.
  • Lean Flow: Organizes processes to allow a single person to build an entire product.
  • Basic Rule for Lean: Make product flow through a process; "make one, move one”.
  • Pull System : Produces only what the next process needs and when it needs it.
  • Push System: Typical Production System where everything is produced, as quickly as possible, even if the next operation/customer does not need, want, or are not ready for it.
  • Bottlenecks: A resource within a process whose capacity limites the amount of information/materials that flows and which must be managed, exists in every process.
  • Can be masked by High WIP(Work In Progress)
  • Bottleneck moves, requires Managed buffer, and to Flex the bottleneck, the operators working should take breaks but not the process.

Pull System Elements

  • Supermarkets are located at the end of the producer's line area, containing various completed parts in quantities based on production lot size and withdrawal frequency.
  • Parts/material are staged at the point of use, located at the consumer's line, including all materials to complete products and quantities based on usage lot size (pitch) and supply frequency.
  • The best analogy of a Pull System is a supermarket, where purchasing a can of soup removes it from the shelf triggering stock person to replenish that stock only to what shelf space can handle.

Kanban

  • A Japanese term for "signal board," a product identification method that communicates what, when, where, and how many are needed
  • Kanbans signal authorization to produce and sequence production.
  • Types of Kanban include Production Kanban, Withdrawal Kanban, Kanban Square, Signal Kanban, Material Kanban and Supplier Kanban.

Kanban Signals

  • Kanban signals include electronic notifications, empty tubs/racks, paper "cards," colored lights, golf balls, and sounds.
  • Kanban’s must be attached to actual parts while pull signals are removed as soon as the first piece of material is removed from a container.
  • To calculate how many Kanbans are needed, the formula is (Lead time / TAKT time) / Parts per Kanban + "X" = # of Kanbans needed.
  • Pitch Time = TAKT Time (or Cycle Time) * (Qty/Kanban).

Material and Information Flow Guidelines

  • Production is based on demand.
  • Continuous flow (single piece) flow is used wherever possible.
  • Supermarkets are implemented to control upstream processes.
  • Customer pulls are directed to only one internal process, called the pacesetter.
  • Distribute production evenly over a pacesetter process or level loading.
  • Ability to make every part every day.

Changeover Time Reduction

  • Reduction permits smaller batch sizes, reduces Raw Material, Work In Progress (WIP), and Finished Goods to reduce lead time and improve the ability to respond to customer demands,.
  • Quick changeover/setup times enhance continuous improvement.

SMED (Single Minute Exchange of Dies)

  • SMED leads to smaller lot, reduces lead times, and minimized inventory.
  • SMED eliminates searching for items, lining them up and transporting.
  • Reduce set up time using SMED.
  • The time between the last good part from one run until the first good part from the next run is considered the definition of changeover time.

Reduce Set Up Time

  • Distinguish between internal and external elements and analyze the existing setup process.
  • Shift internal elements externally and streamline internal and external elements.
  • Create a test plan to implement the new ideas in the business
  • A good first step is the implementation of an existing changeover process and review it to provide an accurate point of view on what is taking place, separating the tasks that you can do while the machine is running.

TPM (Total Productive Maintenance)

  • TPM is a series of methods to keep equipment running.
  • Develop people who are equipment-knowledgeable and create well-engineered equipment that builds in safety and quality and create a flourishing and enthusiastic environment.
  • Maximize equipment productivity and capacity as measured by Overall Equipment Effectiveness (OEE).
  • Strategies of TPM Deployment consists of Focused Improvement (Kaizen), Autonomous Maintenance, Planned Maintenance & more.
  • The 5S Method is the basis of TPM and is a method for creating a clean, well-organized workplace that exposes and makes abnormalities visible.
  • Increased workplace safety is a natural result from 5S improvements.
  • Tips for 5S Success is to build directly into standardized work which includes cleaning the management system.

5S Activities

  • Sort (Seiri): Remove unnecessary items from the work area.
  • Set in Order (Seiton): Arrange tools and materials for storage and retrieval.
  • Shine (Seiso): Keep the workspace clean.
  • Standardize (Seiketsu): Document new and best practices.
  • Sustain (Shitsuke): commit to improvement.

Key Measures within TPM

  • Availability calculates "uptime" of manufacturing operations
  • Performance Efficiency measures "running efficiency".
  • Overall Equipment Effectiveness (OEE) is calculated by multiplying Availability, Performance Efficiency, and Quality Rate.

Error Proofing

  • Six sigma LSS tool to reduce defects, waste and orients with improvements of FMEA, Brainstorming & Graphical data.
  • Elimination, Prevention, Replacment, Facilitation, Detection & Mitigation
  • The most common reactions to errors are “STP" such as Standard changes, Training the offenders and Punishing the repeat offender.

Jidoka

  • Jidoka defined by Toyota as "automation with a human mind and quick action".
  • Shigeo Shingo developed the concept of Poka-yoke (or simple, inexpensive failure proofing devices) which reduces the mental/physical burden of workers.

Poka-yoke

  • A component of Just In Time (JIT), and also referred to as ""mistake-proofing"" device & must inspect 100% of the time.
  • It aims to eliminate the chance of errors occurring.
  • Poka-Yoke devices can be as simple as "Metal detectors,USB ports, Spell checkers, and Alarm clocks’’.

Multivoting Excel

  • Voter has personal column to evaluate how well each solution meets each criterium and voters rank the solutions while votes for each solution will automatically be weighted then summed.

Kaizen Events

  • Are an excellent vehicle with empowerment to people to implement solutions with low costs during a rapid timeframe with great success.
  • 2-5 days and consists of 5-25 people
  • Consists of a Champion, Process Owner and Stakeholders.

Additional tools used when developing changes

  • Review what you know
  • Brainstorm and include everything (quick and dirty)
  • Short Time Investment (candid comments, Edison & Musical chairs)
  • Full time investment (scamper)
  • Combine these ideas for best results

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Lean Six Sigma Methodology Quiz
15 questions

Lean Six Sigma Methodology Quiz

FascinatingHyperbole9823 avatar
FascinatingHyperbole9823
Lean Six Sigma DMAIC Model Overview
48 questions
DMAIC Improve Phase: Lean Six Sigma
87 questions
Use Quizgecko on...
Browser
Browser