Practical Machinery Safety (eBook)
304 Seiten
Elsevier Science (Verlag)
978-0-08-048023-7 (ISBN)
The book highlights the major international standards that are used to support compliance with EU regulations and uses these standards as a basis for the design procedures. It looks at the risk assessment processes used to identify hazards and to quantify the risks inherent in a machine. It introduces the concepts of safety categories as defined by standard EN954-1 (Safety of Machinery) and illustrates the principles of failsafe design, fault tolerance and self-testing.
It also provides an introduction to machinery protection devices such as guards, enclosures with interlocks and guard-monitoring relays, locking systems, safety mats, photo-electric and electro-sensitive principles and the application of light curtains, a study of Safety Control System techniques, and introduces the principles of safety-certified PLCs.
1.Plan and implement safety systems that deliver a safe working environment and compliance with national and international standards.
2.Apply simple risk assessments and hazard design methods to your own projects
3.Identify hazards that occur with machinery and know how to deal with them"
Practical Machinery Safety aims to provide you with the knowledge to tackle machinery safety control problems at a practical level whilst achieving compliance with national and international standards. The book highlights the major international standards that are used to support compliance with EU regulations and uses these standards as a basis for the design procedures. It looks at the risk assessment processes used to identify hazards and to quantify the risks inherent in a machine. It introduces the concepts of safety categories as defined by standard EN954-1 (Safety of Machinery) and illustrates the principles of failsafe design, fault tolerance and self-testing. It also provides an introduction to machinery protection devices such as guards, enclosures with interlocks and guard-monitoring relays, locking systems, safety mats, photo-electric and electro-sensitive principles and the application of light curtains, a study of Safety Control System techniques, and introduces the principles of safety-certified PLCs. Plan and implement safety systems that deliver a safe working environment and compliance with national and international standards Apply simple risk assessments and hazard design methods to your own projects Identify hazards that occur with machinery and know how to deal with them
Cover 1
Contents 1
Preface 1
1. Introduction to the machinery safety workshop 11
1.1 Scope and objectives 1
1.2 Machinery and controls 1
1.3 Distinction between machinery and process safety control systems 1
1.4 International standards and practices 1
1.5 Introduction to hazards and risks 1
1.6 Risk reduction 1
1.7 The Alarp principle for tolerable risk 1
1.8 Development example for a machinery safety system 1
1.9 The engineering tasks 1
1.10 Benefits of the systematic approach 1
1.11 Conclusions 1
2. Guide to regulations and standards 34
2.1 Purpose and objectives 1
2.2 History and overview of European Directives and Standards 1
2.3 The European Machinery Directive 1
2.4 Conformity procedures 1
2.5 Other ‘New Approach Directives’ 1
2.6 User side directives: workplace health and safety legislation 1
2.7 Some machinery safety standards 1
2.8 Regulations and standards in the USA 1
2.9 Conclusions 1
References 1
3. Risk assessment and risk reduction 66
Contents summary 1
3.1 Purpose and objectives 1
3.2 Introduction to risk assessment 1
3.3 Procedure for risk assessment 1
3.4 Hazard study methods 1
3.5 Risk estimation 1
3.6 Risk reduction principles 1
3.7 Outcomes of the risk assessment 1
3.8 Documentation methods for the risk assessment 1
3.9 Conclusions 1
References 1
4. Design procedures for safety controls 102
Contents summary 1
4.1 Introduction to design techniques 1
4.2 Review of design standard EN 954-1 1
4.3 Procedure for the design of safety controls based on EN 954 1
4.4 Design considerations 1
4.5 Safety categories 1
4.6 Conclusions 1
References 1
5. Emergency-stop monitoring and the safety relay 122
5.1 Introduction 1
5.2 Definitions and implications of stop functions 1
5.3 Safety relay terminology 1
5.4 How does an E-stop safety relay work? 1
5.5 Practical safety relays 1
5.6 Certification 1
5.7 Functional overview of monitoring relays 1
5.8 Electronic and programmable E-stop monitors 1
5.9 Using monitoring safety relays for guards (safety gate monitors) 138
5.10 Review of other monitoring relay functions 1
5.11 Conclusions 1
References 1
6. Sensors and devices for machinery protection 142
6.1 Contents summary 1
6.2 Purpose and objectives 1
6.3 Review of guards 1
6.4 Sensing devices for guards 1
6.5 Mechanical trapped key interlocking 1
6.6 Presence sensing devices 1
6.7 Control devices for safety 1
6.8 Safety networks and sensors 1
6.9 Conclusions 1
7. Application guidelines for protection devices 179
7.1 Introduction 1
7.2 Choosing protection methods 1
7.3 Guarding devices 1
7.4 Point of operation devices 1
7.5 Application guidance notes for light curtains 1
7.6 Conclusions 1
8. Programmable systems for safety controls 200
8.1 Introduction 1
8.2 Benefits and disadvantages of safety PLCs 1
8.3 Characteristics of safety PLCs 1
8.4 Application software 1
8.5 Safe networking 1
8.6 Classification and certification of safety PLCs 1
8.7 Summary 1
References 1
9. Introduction to standards for programmable systems 230
9.1 Introduction 1
9.2 Objectives 1
9.3 Outline of IEC 61508 1
9.4 Concept of SILs 1
9.5 How can we determine the required SIL for a safety function? 1
9.6 Some implications of IEC 61508 for machinery systems 1
9.7 Summary 1
9.8 Conclusion 1
References 1
Appendix: Notes on the method for the determination of SILs for a machinery safety application 1
Appendix A: References and sources of information on machinery safety 1
Appendix B: Glossary 1
Appendix C: Notes on tolerable risk 1
Appendix D: Notes on PUWER 1
Appendix E: Guide to fault tree analysis 1
E.1 Functions of the gates 1
E.2 Event symbols 1
E.3 Adding risk reduction measures in FTA 1
Practical exercises 1
Exercise 1: Calculating risk parameters 1
Exercise 2: Developing safety requirements 1
Exercise 3: Risk assessment and risk reduction 1
Exercise 4: Application of fault tree analysis 1
Exercise 5: Outline design of a safety system 1
Exercise 6: Calculating safety distance for a light curtain application 1
Answers to practical exercises 1
Exercise 1 1
Exercise 2 1
Exercise 3 1
Exercise 4 1
Exercise 5 1
Exercise 6 1
Index 1
Erscheint lt. Verlag | 16.7.2004 |
---|---|
Sprache | englisch |
Themenwelt | Sachbuch/Ratgeber |
Technik ► Bauwesen | |
Technik ► Elektrotechnik / Energietechnik | |
Technik ► Maschinenbau | |
Wirtschaft ► Betriebswirtschaft / Management ► Unternehmensführung / Management | |
ISBN-10 | 0-08-048023-3 / 0080480233 |
ISBN-13 | 978-0-08-048023-7 / 9780080480237 |
Haben Sie eine Frage zum Produkt? |
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