Private account workspace
Incident investigation builder
An Ishikawa fishbone investigation: one effect statement, six fixed branches, and hypotheses tested with evidence -- not a flat list of findings.
Competent-person review required
This tool records your investigation. It does not replace your organization's formal investigation procedure, regulatory reporting obligations or review by a competent person.
Hypothesis, not factEverything you add to a branch is a hypothesis until evidence supports or rejects it. Mark each one Unproven, Supported or Rejected -- never treat a listed cause as confirmed just because it's on the diagram.
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Myaser format
New investigation
Step 1
Timeline of events
No events added yet. A timeline is optional but helps reconstruct what happened.
Ishikawa cause map
Six fixed branches. Add a hypothesis under whichever one it belongs to -- the diagram updates as you go.
Add timeline event