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SAFETY WITH MACHINERY
Safety with Machinery
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Second Edition

By
John Ridley, BSc, CEng, MIMechE, FIOSH, DMS, Independent Consultant, Formerly Chief Safety Engineer, Reed International UK
Dick Pearce, BSc, CEng, FIEE, Independent Electrical Safety Consultant, U.K. Formerly Principal Electrical Inspector with the Health and Safety Executive.

Description
John Ridley and Dick Pearce, both recognized specialists in machinery safety, guide the reader through the various standards, regulations and best practices relating to the safe design and use of machinery and show which standard is relevant for which type of machine. Safety with Machinery provides a basic grounding in machinery safety and covers safeguarding philosophy and strategy, typical hazards, risk assessment and reduction, guarding techniques, ergonomic considerations, safe use of equipment and plant layout. All types of safeguards are discussed – mechanical, interlocking, electrical / electronic / programmable, hydraulic, pneumatic. The new edition has been updated throughout in line with changes in regulations and standards. The section on electric, electronic and programmable safety systems has been expanded to reflect their increasing importance. The book now focuses on the harmonised standards (e.g. EN ISO 13849, IEC/EN 61131-2) which can be used by manufacturers to self-certify their machines for the European market without the need for third party examination, but also covers other relevant standards (e.g. IEC 62061). Many practical examples set the regulations in context and assist in the interpretation of the various standards. Safety with Machinery is essential reading for all engineers involved in machinery design and maintenance all over the world as every machine sold within or into the EU needs to conform to the harmonised standards. It also provides health and safety professionals, students and employee representatives, as well as certification bodies, health and safety inspectors and safety regulators with a comprehensive overview of machinery safety.

Audience
Engineers, technicians and managers in machinery design, manufacture and maintenance; health and safety professionals and safety representatives in manufacturing industries; certification and audit bodies; health and safety inspectors and safety regulatory organisations. Vocational students on design of machinery and health and safety courses.

Contents
Preface to the second edition Preface to the first edition

PART I – SAFEGUARDING PHILOSOPHY AND STRATEGY


1 Safeguarding of work equipment
1.1 Introduction 1.2 Design considerations 1.3 Life cycle 1.4 Designer?s responsibility 1.5 Safeguarding principles 1.6 Guarding strategy 1.7 Unit vs holistic approach to safeguarding 1.8 EU Directives in machinery safety 1.9 Standard-making bodies 1.10 European approach to machine guarding 1.11 Interpretation of standards 1.12 Arrangements in the USA

2 Factors affecting the selection and effectiveness of machine safeguards
2.1 Introduction 2.2 Basic factors 2.3 Quality assurance 2.4 Reliability 2.5 Integrity 2.6 Validation 2.7 Difficulties in applying some safety standards 2.8 Summary

3 Typical hazards of machinery
3.1 Identification 3.2 Agents of hazards 3.3 Hazards from parts of machinery and work equipment

4 Risk assessment, risk reduction and selection of safeguards
4.1 Introduction 4.2 What is a risk assessment? 4.3 Risk reduction strategy 4.4 Relevant standards 4.5 Determining a safety integrity level for machinery hazards 4.6 Selecting a safeguarding system 4.7 Summary

Part II – GUARDING TECHNIQUES


5 Mechanical guarding
5.1 Introduction 5.2 Guard selection 5.3 Guard types 5.4 Other factors to consider 5.5 Other techniques

6 Interlocking safeguards
6.1 Introduction 6.2 Interlocking devices 6.3 Guard locking 6.4 Interlocking systems 6.5 Levels of risk 6.6 Interlocking media 6.7 Two hand controls 6.8 Hold-to-run controls 6.9 Limited movement control 6.10 Person sensing devices 6.11 Lasers 6.12 Pressure sensitive mats 6.13 Pressure sensitive edges and wires 6.14 Grab wires 6.15 Emergency stop switches 6.16 Telescopic trip switches 6.17 Proximity switches 6.18 Key exchange systems 6.19 Key interlock switches 6.20 Delayed start 6.21 Other interlocking devices

7 Ergonomic aspects of machinery safeguarding
7.1 Introduction 7.2 Physiology 7.3 Controls 7.4 Machine layout 7.5 Colours 7.6 Lighting 7.7 Noise 7.8 Vibrations 7.9 Rate of working 7.10 Temperature and humidity 7.11 Ventilation 7.12 Repetitive actions 7.13 Warnings 7.14 Vision 7.15 Radiations 7.16 Indicators and instruments 7.17 Coda

Part III - SAFEGUARDING SYSTEMS


8 Mechanical safety arrangements
8.1 Introduction 8.2 Guards 8.3 Distance fencing 8.4 Safety gaps 8.5 Feed and take-off stations 8.6 Work-holding devices 8.7 Counter-weights 8.8 Safety catches 8.9 Braking systems 8.10 Clutches 8.11 Summary

9 Electrical safety circuits
9.1 Introduction 9.2 Effect on safety 9.3 Basic safety requirements 9.4 Selection of interlocking switches 9.5 Switching contact requirements 9.6 Factors influencing the selection of interlocks 9.7 Circuit fault protection 9.8 Safety control circuits 9.9 Quantitative analysis

10 Hydraulic safety circuits
10.1 Introduction 10.2 Hydraulic systems for safety circuits 10.3 Hydraulic safety circuits

11 Pneumatic safety circuits
11.1 Introduction 11.2 Pneumatic installations 11.3 Pneumatic safety circuits 11.4 Summary

Part IV - OTHER SAFETY RELATED ARRANGEMENTS


12 Safety in the use of lifting equipment
12.1 Introduction 12.2 Common safety features of lifting equipment 12.3 Additional features for particular lifting equipment 12.4 Lifting accessories 12.5 Circumstances requiring special precautions 12.6 Precautions when handling lifting equipment

13 Safety with pressure systems
13.1 Introduction 13.2 Compressed air 13.3 Hydraulic installations 13.4 Steam 13.5 Process plant

14 Safe working with equipment
14.1 Introduction 14.2 Systems of work 14.3 Protection from electric shock 14.4 Locking off 14.5 Ergonomics 14.6 Anthropometrics 14.7 Openings in guards 14.8 Operating instructions and manuals 14.9 Labels on equipment 14.10 Supervision 14.11 Use of jigs and fixtures 14.12 Safety clothing 14.13 Stored energy 14.14 Signs and signals

15 Plant layout and the working environment
15.1 Introduction 15.2 Space 15.3 Buildings 15.4 Services 15.5 Ventilation 15.6 Lighting 15.7 Temperature 15.8 Machine layout 15.9 Noise 15.10 Vibrations 15.11 Materials handling 15.12 Maintenance 15.13 Waste 15.14 Access 15.15 Lubrication 15.16 Dust and fumes 15.17 Floors and foundations 15.18 Hygiene 15.19 Notices and signs 15.20 Explosive atmospheres

Part V - APPENDICES
1. Published standards 2. Glossary of terms 3. Abbreviations 4. Smooth shaft pick-up 5. Pipeline colour codes 6. Permit-to-work 7. Protection of enclosuresIndex

Bibliographic details
Hardbound, 320 pages, publication date: DEC-2005
ISBN-13: 978-0-7506-6780-7
ISBN-10: 0-7506-6780-X
Imprint: BUTTERWORTH HEINEMANN

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EUR 82.95
USD 108
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Last update: 5 Sep 2009
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