1. Software Safety Risk Evaluation (SSRE) Process SAŠA ŠPILER METHOD ENGINEERING UTRECHT, APRIL 2014

2. Content  What is SSRE process?  Phases  PDD and example  Related literature

3. Software Safety Risk Evaluation process  Represented in 2010 (18th IEEE International Requirements Engineering Conference)  Based on: SEI Software Risk Evaluation (SRE) developed in 1992 It is a process used for identification, analysis, consolidation and mitigation of software safety risks (Hill & Talley, 2010).

4. Software Safety Risk Evaluation process  SSRE USAGE: 4 projects at 3 NASA Centres  AUTHORS: JANICE HILL SCOTT TILLEY Works at IV&V Facility at NASA Professor of Software Engineering in a Department of Computer Sciences at Florida Institute of Technology

5. Phases Detection Risk specification Assessmen t ConsolidationMitigation 2 34 5 1 5

6. PDD

7. PHASE 1: DETECTION Project Profile Safety Related Questions Risks

8. PHASE 2: RISK SPECIFICATION PerformanceSupport Cost Schedule ProjectPerformanceSupportCostSchedule ATCS3077333

9. PHASE 3: ASSESSMENT MAGNITUDE 1 7 Catastrophic * IMPACT Critical Marginal Negligible Likely LIKELIHOOD Probable Possible Unlikely Improbable RISK PROFILE low high

10. PHASE 3: ASSESSMENT Project1234567 ATCS 202329331661 lowhigh

11. PHASE 4: CONSOLIDATION Risk Candidates Priority Ranking (1-5) Project12345 ATCS 194051711

12. Safety Air Traffic Control Procedure Restart Safety-Critical Assurance System Hazard Analysis PHASE 5: MITIGATION IMPORTANCE 1. 2. 3. RISK AREA

13. Related Literature  SEI safety requirements evaluation process  Legacy System Risk Database (LSRD) tool

14. Questions?