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Safety Critical Systems Handbook: A Straightfoward Guide to Functional Safety, IEC 61508 (2010 Edition) and Related Standards, Including Process IEC 61511 and Machinery IEC 62061 AND ISO 13849, Third Edition, offers a practical guide to the functional safety standard IEC 61508. The book is organized into three parts. Part A discusses the concept of functional safety and the need to express targets by means of safety integrity levels. It places functional safety in context, along with risk assessment, likelihood of fatality, and the cost of conformance. It also explains the life-cycle approach, together with the basic outline of IEC 61508 (known as BS EN 61508 in the UK). Part B discusses functional safety standards for the process, oil, and gas industries; the machinery sector; and other industries such as rail, automotive, avionics, and medical electrical equipment. Part C presents case studies in the form of exercises and examples. These studies cover SIL targeting for a pressure let-down system, burner control system assessment, SIL targeting, a hypothetical proposal for a rail-train braking system, and hydroelectric dam and tidal gates.
Autorentext
Dr David J Smith is the Proprietor of Technis Consultancy. He has written numerous books on Reliability and Safety over the last 35 years. His FARADIP database has become widely used, and his other software packages are also used throughout the profession. His PhD thesis was on the subject of reliability prediction and common cause failure. He contributed to the first drafting of IEC 61508 and chairs the IGEM panel which produces SR/15 (the gas industry safety related guidance). David is past President of the Safety and Reliability Society.
Inhalt
A quick overview
The 2010 version of IEC 61508
Acknowledgements
Part A: The Concept of Safety Integrity 1
Chapter 1 The Meaning and Context of Safety Integrity Targets
1.1 Risk and the Need for Safety Targets
1.2 Quantitative and Qualitative Safety Targets
1.3 The Life-cycle Approach
1.4 Steps in the Assessment Process
1.5 Costs
1.6 The Seven Parts of IEC 61508
Chapter 2 Meeting IEC 61508 Part 1
2.1 Establishing Integrity Targets
2.2 ALARP ("As low as Reasonably Practicable
2.3 Functional Safety Management and Competence
IEC 61508 Part 1
Chapter 3 Meeting IEC 61508 Part 2
3.1 Organizing and Managing the Life-cycle
3.2 Requirements Involving the Specification
3.3 Requirements for Design and Development
3.4 Integration and Test (Referred to as Verification
3.5 Operations and Maintenance
3.6 Validation (Meaning Overall Acceptance Test and the Close Out-of Actions)
3.7 Safety Manuals
3.8 Modifications
3.9 Acquired Sub-systems
3.10 "Proven in Use (Referred to as Route 2s in the Standard
3.11 ASICs and CPU Chips
3.12 Conformance Demonstration Template
IEC 61508 Part 2
Chapter 4 Meeting IEC 61508 Part 3
4.1 Organizing and Managing the Software Engineering
4.2 Requirements Involving the Specification
4.3 Requirements for Design and Development
4.4 Integration and Test (Referred to as Verification
4.5 Validation (Meaning Overall Acceptance Test and Close Out of Actions
4.6 Safety Manuals
4.7 Modifications
4.8 Alternative Techniques and Procedures
4.9 Data Driven Systems
4.10 Some Technical Comments
4.11 Conformance Demonstration Template
IEC 61508 Part 3
Chapter 5 Reliability Modeling Techniques
5.1 Failure Rate and Unavailability
5.2 Creating a Reliability Model
5.3 Taking Account of Auto-test
5.4 Human Factors
Chapter 6 Failure Rate and Mode Data
6.1 Data Accuracy
6.2 Sources of Data
6.3 Data Ranges and Confidence Levels
6.4 Conclusions
Now try the exercise and the example, which are Chapters 11 and 12.
Chapter 7 Demonstrating and Certifying Conformance
7.1 Demonstrating Conformance
7.2 The Current Framework for Certification
7.3 Self Certification (Including Some Independent Assessment
7.4 Preparing for Assessment
7.5 Summary
Part B: Specific Industry Sectors
Chapter 8 Second-tier Documents e Process, Oil and Gas Industries
8.1 IEC International Standard 61511: Functional Safety - Safety Instrumented Systems for the Process Industry Sector
8.2 Institution of Gas Engineers and Managers IGEM/SR/15: Programmable Equipment in Safety-related Applications e 5th Edition 2010
8.3 Guide to the Application of IEC 61511 to Safety Instrumented Systems in the UK Process Industries
8.4 ANSI/ISA-84.00.01 (2004) e Functional Safety, Instrumented Systems for the Process Sector
8.5 Recommended Guidelines for the Application of IEC 61508 and IEC 61511 in the Petroleum Activities on the Norwegian Continental Shelf OLF-070
Chapter 9 Machinery Sector
9.1 EN ISO 14121
9.2 EN ISO 13849
9.3 BS EN 62061
Chapter 10 Other Industry Sectors
10.1 Rail
10.2 UK MOD Documents
10.3 Earth Moving Machinery
10.4 C Coding Standard (MISRA e Motor Industries Research Association) e Development Guidelines for Vehicle Based Programmable Systems
10.5 Automotive
10.6 IEC International Standard 61513: Nuclear Power Plants - Instrumentation and Control for Systems Important to Safety - General Requirements for Systems
10.7 Avionics
10.8 Medical e IEC 60601 Medical Electrical Equipment, General Requirements for Basic Safety and Essential Performance
10.9 Stage and Theatrical Equipment
10.10 Electrical Power Drives
10.11 Documents which are now Withdrawn
Part C: Case Studies in the Form of Exercises and Examples
Chapter 11 Pressure Control System (Exercise)
11.1 The Unprotected System
11.2 Protection System
11.3 Assumptions
11.4 Reliability Block Diagram
11.5 Failure Rate Data
11.6 Quantifying the Model
11.7 Proposed Design and Maintenance Modifications
11.8 Modeling Common Cause Failure (Pressure Transmitters)
11.9 Quantifying the Revised Model
11.10 ALARP
11.11 Architectural Constraints
Chapter 12 Burner Control Assessment (Example)
Executive Summary & Recommendations
12.1 Objectives
12.2 Integrity Requirements
12.3 Assumptions
12.4 Results
12.5 Failure Rate Data
12.6 References
Annex I Fault tree details
Chapter 13 SIL targeting e some practical examples
13.1 A Problem Involving EUC/SRS Independence
13.2 A hand-held Alarm Intercom, Involving Human error in the Mitigation
13.3 Maximum Tolerable Failure Rate Involving Alternative Propagations to Fatality
13.4 Hot/cold Water Mixer Integrity
13.5 Scenario Involving High Temperature Gas to a Vessel
13.6 Example using the LOPA Technique
Chapter 14 Hypothetical Rail Train Braking System (Example)
14.1 The Systems
14.2 The SIL Targets
14.3 Assumptions
14.4 Failure Rate Data
14.5 Reliability Models
Chapter 15 Rotorcraft Accidents and Risk Assessment
15.1 Helicopter Incidents
15.2 Floatation Equipment Risk Assessment
Chapter 16 Hydro-electric Dam and Tidal Gates
16.1 Flood-gate Control System
16.2 Spurious opening of either of two tidal lock gates involving a trapped vessel
Appendix 1 Functional Safety Management
Appendix 2 Assessment Schedule (Checklist)
Appendix 3 Betaplus CCF Model, Scoring Criteria
Appendix 4 Assessing Safe Failure Fraction and Diagnostic Coverage
Appendix …