Steps of a PRISMA analyse
1. Define Top event: the consequence of discovery event
(i.e the system) as the visible reason for the analyses.
2. Describe the 2 sides of the three, the failure and
discovery
3. Define the direct causes= primary action of decision
4. Use the why questions to chronological define the root
causes related to the direct cause
5. Select the classification codes for the defined root
causes




