STPA Insights | Sumble

What is STPA?

STPA (System-Theoretic Process Analysis) is a powerful hazard analysis technique based on systems theory. It identifies potential hazards by modeling the system as a control loop and examining potential control flaws that could lead to accidents. It is commonly used in safety-critical systems to identify unsafe control actions and design safety constraints.

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What other technologies are related to STPA?

STPA Competitor Technologies

FTA

FTA (Fault Tree Analysis) is a top-down, failure-based hazard analysis technique, and can be viewed as a competitor to STPA, which is a system-theoretic approach that analyzes hazards from a control and system interaction perspective.

mentioned alongside STPA in 3% (123) of relevant job posts

FMEA

FMEA (Failure Mode and Effects Analysis) is a bottom-up, failure-based hazard analysis technique. It competes with STPA, which considers a broader scope of system-level causes, including unsafe control actions and system interactions.

mentioned alongside STPA in 0% (119) of relevant job posts

STPA Complementary Technologies

ISO 21448

ISO 21448 (SOTIF) focuses on the safety of intended functionality, which is complementary to STPA's broader system-theoretic hazard analysis. STPA can help identify scenarios that SOTIF might miss, particularly those arising from complex interactions.

mentioned alongside STPA in 15% (73) of relevant job posts

ISO 26262

ISO 26262 is a functional safety standard for automotive systems. STPA can be used to provide system-level hazard analysis as input to the ISO 26262 development process, making them complementary.

mentioned alongside STPA in 1% (114) of relevant job posts