Details

Autor(en) / Beteiligte

• Johannessen, Per
• Törner, Fredrik
• Torin, Jan

Titel

Actuator Based Hazard Analysis for Safety Critical Systems

Ist Teil von

• Computer Safety, Reliability, and Security, 2004, p.130-141

Ort / Verlag

Berlin, Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2004

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In the early stages of a design process, a detailed hazard analysis should be performed, particularly for safety critical systems. In this paper an actuator based hazard analysis method is presented. Since it is the actuators that affect the systems environment, this actuator based approach is the logical approach for an early hazard analysis when only limited information of the system implementation is available. This approach is also unique since all identified failures are distributed on four different severities. A criticality ranking is assigned to each failure as a combination of the severities and their distribution. This ranking is also used to give an indication of the preferred fail states. For the hazards resulting in a high criticality that needs to be handled, the method supports a solvability analysis between different design solutions. This solvability analysis rewards design concepts that handles hazards with high criticality numbers.