Astah System Safety

What is Astah System Safety?

Design, verify, and validate

Astah System Safety is a modeling tool for safety-critical systems to support system architecture modeling, system security assessment and analysis. This is for the automotive industry with autonomous cars working with SOTIF and ISO 26262, and aerospace, rail, defense, robotics and healthcare industries where safety ownership is crucial and also interested in adopting Model-Based Systems Engineering (MBSE).

SysML Diagrams

• Block Definition Diagram (BDD)
• Inner Block Diagram (IBD)
• Parametric Diagram
• Requirements Diagram
• Requirements Table
• Use case diagram
• Activity diagram
• State machine diagram
• Sequence diagram

SCDL

SCDL (Safety Concept Description Language) is a language for safety architecture projects defined by the Safety Concept Notation Study Group.Astah System Safety supports one of the diagrams that SCDL presents:Safety concept diagram

SEAL / STPA

• Control Structure Diagram
• Table of preconditions
• Control Loop Diagram
• UCA Table (Unsafe Control Action)
• Loss Scenario Table
• Countermeasure table
• Accident Risk Safety Restrictions Table

GSN (goal structuring notation)

You can visualize the security arguments using the goal-structuring notation and also the D-case, which works effectively for building consensus and realizing responsibility.

• GSN (Objective Structuring Notation) / Case D

System requirements:

CPU: 1.8 GHz dual core processor

RAM: 2 GB

HDD / SSD: 50 GB of free space on the main drive

Operating system: Microsoft Windows 8 32-bit, Microsoft Windows 7 32-bit and Microsoft Windows Vista 32-bit

Resolution: 1024×768