Podcast
Questions and Answers
Given the example of the light bulb, which of the following is NOT a valid potential root cause for the issue of "face-mask clouding spectacles"?
Given the example of the light bulb, which of the following is NOT a valid potential root cause for the issue of "face-mask clouding spectacles"?
Applying the "Why?" analysis to the problem of "EBB cannot switch on", what is a possible root cause that requires further investigation?
Applying the "Why?" analysis to the problem of "EBB cannot switch on", what is a possible root cause that requires further investigation?
Based on the provided content, what is the PRIMARY goal of the "Why?" analysis?
Based on the provided content, what is the PRIMARY goal of the "Why?" analysis?
What does a Cause & Effect Chain analysis aim to do?
What does a Cause & Effect Chain analysis aim to do?
Signup and view all the answers
Which of the following steps in a Cause & Effect Chain analysis involves brainstorming and categorizing potential causes?
Which of the following steps in a Cause & Effect Chain analysis involves brainstorming and categorizing potential causes?
Signup and view all the answers
What is the purpose of repeatedly asking "Why?" and "Why else?" in Step 4 of a Cause & Effect Chain analysis?
What is the purpose of repeatedly asking "Why?" and "Why else?" in Step 4 of a Cause & Effect Chain analysis?
Signup and view all the answers
How does a Cause & Effect Chain Analysis differ from a traditional problem-solving approach?
How does a Cause & Effect Chain Analysis differ from a traditional problem-solving approach?
Signup and view all the answers
Which of these is NOT a valid step in a Cause & Effect Chain analysis?
Which of these is NOT a valid step in a Cause & Effect Chain analysis?
Signup and view all the answers
How does the cause-and-effect chain analysis differ from the 5 whys?
How does the cause-and-effect chain analysis differ from the 5 whys?
Signup and view all the answers
Flashcards
Cause-and-Effect Analysis
Cause-and-Effect Analysis
A method to identify potential causes and effects of a problem.
Cause & Effect Chain (CEC)
Cause & Effect Chain (CEC)
A diagram that systematically lists hypotheses about causes and effects.
Problem Goal Negation
Problem Goal Negation
Writing the opposite of the desired goal to identify issues.
Brainstorming Causes
Brainstorming Causes
Signup and view all the flashcards
Sorting Causes
Sorting Causes
Signup and view all the flashcards
Asking 'Why?'
Asking 'Why?'
Signup and view all the flashcards
Validation of Hypothesis
Validation of Hypothesis
Signup and view all the flashcards
Iterative Cause Selection
Iterative Cause Selection
Signup and view all the flashcards
Root Cause Analysis
Root Cause Analysis
Signup and view all the flashcards
Power Spike
Power Spike
Signup and view all the flashcards
Mechanical Issues
Mechanical Issues
Signup and view all the flashcards
Current Protection
Current Protection
Signup and view all the flashcards
Electric Socket Failure
Electric Socket Failure
Signup and view all the flashcards
Study Notes
Cause and Effect Chain Analysis
- Cause-and-effect analysis generates hypotheses about the causes and effects of problems.
- A Cause & Effect Chain (CEC) analysis uses a diagram to systematically express hypotheses about why a problem exists or why a desired outcome isn't achieved.
- This method helps focus attention on the process where a problem occurs and allows for constructive use of facts to identify the root cause.
- It cannot replace empirical testing and doesn't definitively identify the single root cause, but explores possible causes.
Steps in Cause & Effect Chain Analysis
- Step 1: Define and negate the problem; list potential causes and categorize them.
- Step 2: Brainstorm likely causes and organize them into major categories or branches.
- Step 3: Create a list of potential causes, filling them in appropriate categories.
- Step 4: Keep asking "Why?" and "Why else?" for each cause, until underlying causes are identified.
- Step 5: Use collective judgment to evaluate the likelihood of various causes. Eliminate unlikely ones.
- Step 6: Repeat step 5, focusing on the most likely causes.
- Step 7: Validate the most likely root cause by testing the hypothesis. If initial findings are inaccurate, revisit potential causes.
Chains of Problems in an Engineering System
- The diagram illustrates how various problems (known and hidden) interconnect to form a chain within an engineering system, leading to the target problem.
- Different problems are identified across different levels to illustrate causation.
Example - Cause-Effect Chain
- Wrong diet leads to excessive salts in the blood, leading to high blood pressure, and eventually headache.
- This example highlights the causal relationship between steps.
Cause & Effect Chain Analysis - Example
- The chain describes how a light not turning on is due to a broken switch, broken light bulb, or a cracked socket.
Case Study - Procter & Gamble
- The coffee bag was developed to replace instant coffee and maintain convenience but had slow coffee extraction.
- The challenge is to lower the cost of the coffee bag.
Key Problems - Coffee Bag Example
- The analysis explores the high cost of the coffee bag, linking it to excessive coffee and low extraction rates.
- This is tied to the amount of Ca and Mg ions in the water.
Solutions - Coffee Bag Example
- Adding ionite particles to the coffee bag helps reduce the negative effects of Ca and Mg ions while maintaining flavor and chemical composition.
Exercises
- The exercise section provides examples of specific problems to address using the CEC analysis technique, such as school children's shoulder pain, face masks clouding/obscuring spectacles, and EBB (presumably some kind of device) not switching on.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the principles of Cause and Effect Chain analysis, focusing on systematically identifying and categorizing the potential causes of problems. Participants will learn the five key steps involved in this analysis technique, enhancing their problem-solving skills and understanding. Ideal for those looking to improve their analytical capabilities in various fields.
