STAMP/STPA and SCDL Diagrams
Astah System Safety supports the following diagrams.
We will be updating this page with more detailed information.
Safety Concept Diagram
Safety Concept Diagram is a structure diagram to represent architecture of the functional safety. It visualizes interactions between requirements, allocations between elements and requirements, and you can add the “weight” properties to decompositions.
This is a similar diagram to Function Block Diagram (FBD), so that it can be widely used not limited to ISO 26262.View Diagram
UCA (Unsafe Control Action) Table
The UCA (Unsafe Control Action) Table is a table to analyze the control actions (those are automatically extracted from the control structure) based on the guided words.
Control Loop Diagram
Control Loop Diagram shows the extracted components related to control actions. You can generate a Control Loop Diagram individually for each control action.