page_title: Event chain diagram
section_title: For Single Events
hierarchical_section_title: Event chain diagram / Rules / For Single Events
caption_attribution_description: English: Event Chain Diagrams: Local and global threats and opportunities with pre- and post mitigation probabilities and impacts
context_page_description: Event chain diagrams are visualizations that show the relationships between events and tasks and how the events affect each other.
  Event chain diagrams are introduced as a part of event chain methodology. Event chain methodology is an uncertainty modeling and schedule network analysis technique that is focused on identifying and managing events and event chains that affect project schedules. Event chain methodology is the next advance beyond critical path method and critical chain project management.
context_section_description: Single events are shown as arrows on the bars on a Gantt Chart. Arrows pointing down represent threats. Arrows pointing up on the Gantt chart represent opportunities or event “Risk Response Plan is executed”. Two arrows in one point represent both threats and opportunities for one risk. The particular horizontal position of the arrow on the Gantt bar is not relevant.
  Issues are shown as arrow in the circle Color of the issue arrow is red (dark)
  Closed or transferred risks are shown using dashed lines. Color of arrow is white. Closed issue is shown in the circle with dashed border line.
  Global threats are shown at the top of the diagrams pointing down, global opportunities are shown at the bottom of diagrams pointing up. Both threats and opportunities belonging to the same global risk are placed at the top and at the bottom of the diagram along the same vertical line.
  Time-dependent global risks, or risks affecting activities running during certain period time, would have a vertical dashed line, associated with them. Statistical distribution for moment of risk can be shown around that arrow, representing time-dependent global risk.
  Colors of arrows represent the calculated the impact of the risk. Risks with higher are presented as red or dark arrows. Risks with low impact are presented as green or light arrows. The size of the arrow represents probability. If the arrow is small, the probability of the event is correspondingly small. Risk probability and impacts are before mitigation unless it otherwise explicitly noted on the diagram.
  Many different risks can be shown on the same Gantt bar. If there is no space to show all arrows, some risks with lower probability and impact can be omitted.
caption: Event ChainDiagrams: Local and global threats and opportunities with pre- and post mitigation probabilities and impacts
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