| Supporting Organizations and People | 5 |
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| Contents | 7 |
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| 1 Preamble | 9 |
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| 2 Development of Technical Safety | 12 |
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| 3 Interdisciplinary Approach | 16 |
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| 3.1 Need for a Safety Methodically Concept | 16 |
| 3.1.1 The Need for Action in Safety Engineering | 16 |
| 3.1.2 Introduction to the Application Area Safety Engineering | 18 |
| 3.1.3 Reasons for this Publication | 19 |
| 3.1.4 The General Framework for Technical Safety | 21 |
| 3.1.5 Legal Basis of Technical Safety | 22 |
| 3.1.6 Ethical Principles | 24 |
| 3.2 Generating Safety | 25 |
| 3.2.1 Principles of Safety Engineering | 25 |
| 3.2.1.1 Safety—An Interdisciplinary Task | 25 |
| 3.2.1.2 Application of the System-Technical Phase Concept | 29 |
| 3.2.1.3 The Role of the Individual in the Safety of Complex Socio-technical Systems | 30 |
| 3.2.2 Procedures for an Interdisciplinary Safety Methodically Concept | 32 |
| 3.2.2.1 General Outline | 32 |
| 3.2.2.1.1 General Agreements on Safety Engineering | 33 |
| 3.2.2.1.2 Requirements of the Procedure for Safety-Compliant Design | 34 |
| 3.2.2.1.3 Safety Methodically Work Steps in Project Management | 34 |
| 3.2.2.2 Modules of the Safety Methodically Concept | 35 |
| 3.2.2.3 Human Factors Engineering | 36 |
| 3.2.2.4 Evaluation of Failure Prevention from the Interdisciplinary Perspective | 38 |
| 3.2.2.5 Criteria for an Interdisciplinary Holistic Safety Concept | 41 |
| 3.2.2.6 Passive and Active Safety Measures | 46 |
| 3.2.2.7 Controlling Failure Mechanisms | 47 |
| 3.2.2.8 Generating Safety According to the Phase Approach | 48 |
| 3.2.3 Implications of a Safety Methodically Concept | 50 |
| 3.2.3.1 Transfer of the Safety Standard to Technologically Comparable Products | 51 |
| 3.2.3.2 Transfer of the Safety Standard to Technologically Further Developed Products | 52 |
| 3.2.3.3 Transfer of the Safety Standard to Technologically Innovative Products | 52 |
| 3.3 Limits of Safety | 53 |
| 3.3.1 Socially Accepted and State-Defined Limits | 54 |
| 3.3.2 Unattainability of Absolute Safety | 56 |
| 3.3.3 The Understanding of Risk | 57 |
| 3.3.4 Factual Relationship Between Risk, Safety Engineering and Technical Safety | 58 |
| 3.3.5 Safety-Engineering Feasibility | 59 |
| 3.3.5.1 Generally Accepted Sound Engineering Practice | 60 |
| 3.3.5.2 State of the Art | 61 |
| 3.3.5.3 State of Scientific and Technical Knowledge | 61 |
| 3.3.5.4 Methodology for Determining the Limits of Safety | 62 |
| 3.4 Verifiability of Safety | 64 |
| 3.4.1 Limits of Verifiability | 64 |
| 3.4.1.1 Responsibility | 64 |
| 3.4.1.1.1 Types of Responsibility | 64 |
| 3.4.1.1.2 Conflict Between Economic Constraints and Technical Necessity | 65 |
| 3.4.1.1.3 Priorities in Deciding Responsibility Conflicts | 66 |
| 3.4.2 Learning as a Continuous Task | 66 |
| 3.4.2.1 Feed-Forward Control of Safety and Reliability | 67 |
| 3.4.2.2 Feedback Control of Safety and Reliability | 67 |
| 3.4.2.3 System of Organizational Learning | 68 |
| 3.4.2.4 Determination of the State of the Art as Learning Scheme | 68 |
| 3.4.2.4.1 Conditions for the Determination Process | 69 |
| 3.4.2.4.2 Steps in the Determination Process | 70 |
| 3.4.2.4.3 Decision-Making | 70 |
| 3.4.3 Controlling Technical Safety in the Product Life Cycle | 71 |
| 3.4.3.1 Phase-Based Pursuance of Technical Safety | 71 |
| 3.4.3.2 Organization of Verification | 72 |
| 3.4.3.2.1 Elements of Verification | 72 |
| 3.4.3.2.2 Grading of Verification | 72 |
| 3.4.3.3 The Modular Concept of the European Union | 73 |
| 3.4.3.4 Control Directive of the European Union | 74 |
| 3.4.3.5 Planning Process | 74 |
| 3.4.3.5.1 Objective and Purpose | 75 |
| 3.4.3.5.2 Materials and Sampling Procedures | 76 |
| 3.4.3.5.3 Verifiability of Requirements | 76 |
| 3.4.3.5.4 Consideration of the Potential Conflict Between Cost-Effectiveness and Technical Safety | 77 |
| 3.4.3.5.5 Responsibilities | 78 |
| 3.4.3.6 Implementation Process | 78 |
| 3.4.3.6.1 Objective and Purpose | 78 |
| 3.4.3.6.2 Hazard Analysis | 80 |
| 3.4.3.6.3 Verifiability of Requirements | 80 |
| 3.4.3.6.4 Inspection and Approval of the Planning Documents | 81 |
| 3.4.3.6.5 Traceability of Documentation | 81 |
| 3.4.3.6.6 Approval Procedure | 82 |
| 3.4.3.6.7 Utilization of Materials | 82 |
| 3.4.3.6.8 Market Surveillance/State Supervision | 83 |
| 3.4.3.7 Operation Process | 83 |
| 3.4.3.7.1 Objective and Purpose | 83 |
| 3.4.3.7.2 Approval | 84 |
| 3.4.3.7.3 Status Checks | 85 |
| 3.4.3.7.4 Instructions for Use | 85 |
| 3.4.3.7.5 Maintenance | 85 |
| 3.4.3.7.6 Retrofitting | 85 |
| 3.4.3.8 Quality Management in Safety Engineering | 86 |
| 3.4.3.8.1 Role and Benefits of Quality Management Systems | 86 |
| 3.4.3.8.2 Quality Management System and Qualified Personnel | 87 |
| 3.5 Social Considerations | 89 |
| 3.5.1 Prevention of Safety-Critical Failures | 89 |
| 3.5.1.1 National and International Developments | 89 |
| 3.5.1.2 Safety and Legislature | 89 |
| 3.5.1.3 Safety and Deregulation | 90 |
| 3.5.1.4 Safety and the Economy | 90 |
| 3.5.1.5 Safety and Assignment of Competences | 91 |
| 3.5.1.6 Safety as a Paramount Quality Characteristic | 91 |
| 3.5.1.7 Quality Management as a Concept for Safety Management | 92 |
| 3.5.1.8 Configuration Control and Change Procedures | 92 |
| 3.5.1.9 The Individual as a Criterion for Safety Management | 92 |
| 3.5.2 Communication with the Public About Technical Safety | 93 |
| 3.6 Recommendations | 96 |
| 3.6.1 The Research Landscape | 97 |
| 3.6.2 Education and Training Options of the Universities | 98 |
| 3.6.3 Thematic Focuses | 99 |
| 3.6.3.1 The Public | 99 |
| 3.6.3.2 Technology Council | 100 |
| 3.6.4 Emergency Planning | 102 |
| 3.6.5 Internationalization | 103 |
| 4 Interdisciplinary Safety Guideline | 104 |
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| 4.1 Understanding of the Term Safety | 104 |
| 4.1.1 Safety as a Legal Term | 104 |
| 4.1.2 The Term “Technical Safety” | 105 |
| 4.1.3 Technical Safety as a Requirement for Product Design and Implementation | 106 |
| 4.1.3.1 Emission Behaviour | 106 |
| 4.1.3.2 Passive Quality Characteristics | 107 |
| 4.1.3.3 Active Functional Characteristics | 108 |