Describe the purpose of Fishbone (Ishikawa) diagrams in root cause analysis within CBM T6?

• A. To list test results in chronological order.
• B. To track project milestones.
• C. To document regulatory requirements.
• D. To organize potential causes into categories such as People, Process, Equipment, Materials, Environment, and Management.

Answer: (D)

Fishbone diagrams help you visualize the factors that could cause a problem by grouping potential causes into clear categories. In a root cause analysis for CBM T6, this structure guides thinking across categories like People, Process, Equipment, Materials, Environment, and Management, showing how different factors may interact and contributing to a focused set of likely root causes. This approach makes it easier to plan targeted data collection and verification, so you can identify the true driver of the issue and choose effective corrective actions. Other options describe tasks like recording test results, tracking milestones, or documenting requirements, which do not illuminate why a problem happened.