Technical Safety, Reliability and Resilience: Methods and Processes

1 Introduction and objectives

1.1 Safe, secure and resilient technical sustainable systems

1.2 Structure of text and chapter contents overview

1.3 Main features of the text

1.4 Sample background research projects

1.4.1 Functional safety of heating and cooling systems in electical vehicles

1.4.2 Resilience Engineering of multi-modal indoor localization system

1.4.3 Reliabilty and resilience for local power supply grids

2 Technical safety and reliability methods for resilience engineering

2.1 Overview

2.2 Why to leverage classical system analysis approaches for resilience engineering

2.3 Approach to assess the suitability of methods

2.4 Suitability assessment with five-step risk management scheme

2.5 Method Usability assessment using Resilience responSe cycle time phases

2.6 Method Usability assessment using Technical resilience capabilities

2.7 Method Usability assessment using system layers

2.8 Method Usability assessment using Resilience criteria

2.9 Summary and conclusions

2.10 Questions

2.11 Answers

3 Basic technical safety terms and definitions

3.1 Overview
3.2 System

3.3 Life cycle

3.4 Risk

3.5 Acceptable risk

3.6 Hazard

3.7 Safety

3.8 Risk minimization

3.9 Safety relevant and critical systems

3.10 Safety relevant norms

3.11 Systems with high requirements for the reliability

3.12 Models for the software and hardware development process

3.13 Safety function and integrity

3.14 Safety Life Cycle

3.15 Techniques and measures for achieving safety

3.16 System description, system modeling

3.16.1 OPM (Object Process Methodology)

3.16.2 AADL (Architecture Analysis & Design Language)

3.16.3 UML (Unified Modeling Language)

3.16.4 AltaRica / AltaRica DF

3.16.5 VHDL (Very High Speed Integrated Circuit Hardware Description Language)

3.16.6 BOM (Base Object Model)

3.16.7 SysML (Systems Modeling Language)

3.17 System simulation

3.18 System analysis methods

3.19 Forms of documentation

3.20 Questions

3.21 Answers

4 Introduction to system analysis

4.1 Overview

4.2 Definition of a system

4.3 Boundaries of the system

4.4 Theoretical vs. practical system audit

4.5 Inductive and deductive system analysis methods

4.6 Forms of documentation

4.7 Failure space and success space

4.8 Overview diagram

4.9 Black swans

4.10 Failure and fault

4.11 Types of failures

4.12 Safety and reliability

4.13 Redundancies

4.14 Active and passive components
4.15 Standby

4.16 Optimization of resources

4.17 Combination of failures

4.18 Summary and outlook

4.19 Questions

4.20 Answers

5 Introduction to system analysis methods

5.1 Overview

5.2 Parts Count approach

5.3 FMEA

5.4 FMECA

5.5 FTA

5.6 ETA

5.7 HA

5.8 FHA

5.9 DFM

5.10 Summary and Outlook

5.11 Questions

5.12 Answers

6 Fault Tree Analysis

6.1 Overview

6.2 Introduction to Fault Tree Analysis

6.3 Definitions

6.3.1 Basic event and top event

6.3.2 Cut sets, minimal cut sets, and their order

6.3.3 Multiple occurring events and branches

6.3.4 Exposure time

6.4 Process of Fault Tree Analys

​Ivo Häring received a PhD in physics at the Max-Planck-Institute for Complex Systems (MPIPKS) from the Technical University Dresden (TUD). Since 2004 he works at the Fraunhofer Ernst-Mach-Institut, EMI, Germany, in various roles including deputy head of the department Safety Technologies and Protective Structures, head of the research groups Technical Safety, Hazard and Risk Analysis, Resilience Engineering, and Senior Scientist. Areas of interest are qualitative and quantitative risk and resilience analysis, engineering, management and optimization; system modelling, analysis, engineering and numerical simulation; technical reliability and safety analysis of multi-domain systems including software and networks; automated, autonomous and self-learning systems; and software application and 3D expert tool development. In these areas he contributed to scientific work programs, set-up, execution and dissemination of multiple national and EU funded research projects, in particular with the aims of risk control, (functional) safety, susceptibility and vulnerability reduction as well as resilience enhancement. The results have been documented in many (conference) articles and used for lectures within safety and security, risk and sustainability engineering master degree programs and continuous academic courses, in particular at the University of Freiburg, Institute for Sustainable Systems Engineering (INATECH), Hochschule Furtwangen University (HFU), Baden-Wuerttemberg State University Loerrach (DHBW) and Fraunhofer Academy. He is member of the editorial board of the European Journal for Security Research (EJSR).