Guidance Note 4 Protection Against Fire BS 7671:2018+A2:2022, 9th Edition 2022 (PDF)

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About the book:

Publisher: IET
Place of Publication: United Kingdom
Pages: 93
Edition: 2022
Language: English
Size: 42 Mb

Guidance Note 4 Protection Against Fire has now been updated to BS7671:2018+A2:2022.

Content:

Cooperating organizations 6
Acknowledgements 7
Preface 8
Introduction 9
Chapter 1 Statutory requirements 10
1.1 General 11
1.2 Statutory regulations 11
1.2.1 The Electricity at Work Regulations 1989 (EAWR), as amended 11
1.2.2 The Electricity Safety, Quality and Continuity Regulations 2002 (ESQCR), as amended 11
1.2.3 The Management of Health and Safety at Work Regulations 1999, as amended 12
1.2.4 The Provision and Use of Work Equipment Regulations 1998 (PUWER) 12
1.2.5 The Construction (Design and Management) Regulations 2015 (CDM) 12
1.2.6 The Dangerous Substances and Explosive Atmospheres Regulations 2002, as amended 12
1.2.7 The Petroleum (Consolidation) Regulations 2014 13
1.2.8 The Cinematograph (Safety) Regulations 1955, as amended 13
1.2.9 The Building Regulations 2010 (England and Wales), as amended 13
1.2.10 The Building (Scotland) Regulations 2004, as amended 13
1.2.11 The Building Regulations (Northern Ireland) 2012, as amended 13
1.2.12 The Health and Safety (Safety Signsand Signals) Regulations 1996 14
1.2.13 The Regulatory Reform (Fire Safety) Order 2005 (England and Wales) 14
1.2.14 Other regulations 15
Chapter 2 Overview of the Wiring Regulations 17
Chapter 3 Generally applicable requirements 21
3.1 General 21
3.2 Fixed equipment 2 2
3.2.1 Heating cables 2 2
3.2.2 Luminaires 2 2
3.2.3 Extra-low voltage (ELV) lighting installations 22
3.2.4 Symbols used in connection with luminaires, controlgear for luminaires and their installation 23
3.3 Manufacturers' instructions 24
3.4 No fire risk in normal use 24
3.5 Arcs, sparks and hot particles 27
3.6 Protection against arcing 27
3.7 Focusing and concentration of heat 28
3.8 Equipment containing flammable liquid 28
3.9 Enclosures 30
3.9.1 Consumer units and similar assemblies in domestic premises 30
3.10 Terminations 31
3.11 Installation of cables 32
Chapter 4 Precautions where particular risks of fire exist 33
4.1 General 3 3
4.2 Requirements for protected escape routes 33
4.3 Risks of fire due to the nature of processed or stored materials 35
4.3.1 Luminaires 35
4.3.2 Enclosures 35
4.3.3 Switchgear and controlgear 36
4.3.4 Cables, circuits and wiring systems 36
4.3.5 Motors 38
4.3.6 Heating appliances 38
4.4 Combustible constructional materials 38
4.4.1 Equipment 38
4.4.2 Luminaires 38
4.4.3 Cables and wiring systems 39
4.5 Fire propagating structures 39
4.6 Locations of national, commercial, industrial or public significance 40
Chapter 5 Protection against burns 41
Chapter 6 Measures to minimize the spread of fire 43
6.1 Precautions in a fire-segregated compartment 43
6.2 Sealing of wiring system penetrations 44
6.2.1 External sealing arrangements 44
6.2.2 Internal sealing arrangements 45
6.2.3 Material for sealing wiring system penetrations 45
6.2.4 Flush-mounted accessories penetrating stud partitions 46
6.2.5 Inspection 48
Chapter 7 Safety services 49
7.1 General 49
7.2 Classification and changeover times 49
7.3 Sources for safety services 50
7.3.1 Generators 51
7.4 . Circuits 52
7.5 Information to be made available 53
7.6 Wiring systems 54
Chapter 8 Special installations and locations 57
8.1 Introduction 57
8.2 Agricultural and horticultural premises 5 7
8.2.1 The risks 5 7
8.2.2 Radiantheaters 58
8.2.3 Employment of residual current devices (RCDs) as a measure for protection against fire 58
8.2.4 Additional requirements for ELV circuits 58
8.2.5 Rodent activity 59
8.2.6 Luminaires 59
8.3 Medical locations 59
8.4 Solar photovoltaic (PV) power supply systems 60
8.5 Extra-low voltage (ELV) lighting installations 61
8.6 Exhibitions, shows and stands 61
8.7 Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses 61
8.8 Heating cables and embedded heating systems 62
Appendix A Safety service and product standards of
relevance to this Guidance Note 63
Appendix B Technical guidance documents 69
Appendix C Approved Document B Volume 1: Dwellings 71
Appendix D Approved Document B Volume 2: Buildings other than dwellings 75
Appendix E Protection of openings and fire-stopping 81
Index 85

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