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1. Root Cause Analysis – Approach and Tools
Fabrizio Leone
Manager, Blades Engineering
Vestas
PublicAugust 30, 2016, FALEO

2. Classification: Public
RCA
Structured Problem Solving Approach
Techniques
Tools
Root Cause Analysis
2

3. Classification: Public
Root cause analysis (RCA) is a method of problem solving used for identifying the
root causes of faults or problems.
A root cause is an initiating cause of either a condition or a causal chain that leads to
an outcome or effect of interest. Commonly, root cause is used to describe the depth
in the causal chain where an intervention could reasonably be implemented to
improve performance or prevent an undesirable outcome.*
* Wikipedia
Definition
Root Cause Analysis
3

4. Classification: Public
DMAIC (an acronym for Define, Measure, Analyze, Improve and Control)
8D
FMEA (an acronym Failure Modes and Effects Analysis)
Problem Definition and Process are key
Definition and Process
Structured Problem Solving Approach
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D0: Plan
D1: Use a Team
D2: Describe the Problem
D3: Develop Interim Containment Plan
D4: Determine, and Verify Root Causes
D5: Verify Permanent Corrections
D6: Implement and Validate Corrective Actions
D7: Prevent Recurrence
D8: Congratulate Team

5. Classification: Public
Cause and Effect/Ishikawa/Fishbone diagram
FMEA
Others:
Is / is not
5 Whys
Fault Tree
Potential Root Cause Contributors
Techniques
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6. Classification: Public
Physical Inspection
– Visual, NDT, Invasive
Data Analysis
– Blade, Turbine, Park
Lab
– Mechanical and Chemical Analysis
Modelling / Simulation
– Blade, Turbine, Park
Finding Root Cause and Contributors
Tools
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7. Copyright Notice
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