BS EN 1755:2024

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Industrial trucks. Safety requirements and verification. Supplementary requirements for operation in potentially explosive atmospheres

Published By	Publication Date	Number of Pages
BSI	2024	60

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Description

This document is applicable to self-propelled and pedestrian propelled manual and semi-manual industrial trucks as defined in ISO 5053-1:2020 including their load handling devices and attachments (hereafter referred to as trucks) intended for use in potentially explosive atmospheres. NOTE 1 Attachments mounted on the load carrier or on fork arms which are removable by the user are not considered to be a part of the truck. This document specifies supplementary technical requirements for the prevention of the ignition of an explosive atmosphere of flammable gases, vapours, mists or dusts by industrial trucks of equipment group II and equipment category 2G, 3G, 2D or 3D. NOTE 2 The relationship between an equipment category (hereafter referred to as category) and the corresponding zone (area classification) is shown in informative Annex B. This document does not apply to: – trucks of equipment group I; – trucks of equipment group II, equipment category 1; – trucks intended for use in potentially explosive atmospheres with hybrid mixtures; – protective systems. This document does not apply to trucks intended for use in potentially explosive atmospheres of carbon disulfide (CS2), carbon monoxide (CO) and/or ethylene oxide (C2H4O) due to the special properties of these gases. Technical requirements relating to lithium-ion batteries and fuel cells as energy sources are not given in this document due to their specific hazards.

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PDF Pages	PDF Title
2	undefined
11	1 Scope 2 Normative references
14	3 Terms and definitions
17	4 Safety requirements and/or protective measures 4.1 General
18	4.2 Hot surfaces 4.2.1 General 4.2.2 Temperature monitoring
19	4.2.3 Temperature classification 4.3 Safety shutdown
20	4.4 Mechanically generated sparks 4.4.1 Load handling devices 4.4.2 Fans of electrical equipment 4.4.3 Radiator fans on IC-engines 4.4.4 Other fans
21	4.4.5 Other rotating parts 4.5 Electrical system 4.5.1 General
22	4.5.2 Electrical equipment 4.5.2.1 General 4.5.2.2 Electrical equipment for category 3G trucks
23	4.5.2.3 Electrical equipment for category 2G trucks 4.5.2.4 Electrical equipment for category 3D trucks 4.5.2.5 Electrical equipment for category 2D trucks 4.5.3 Electrical system bipolarity 4.5.4 Insulation monitoring
24	4.5.5 Battery and battery connectors 4.6 Category 3G trucks equipped with restricted breathing enclosures “nR” and gas detection systems 4.6.1 General 4.6.2 Gas detection systems
26	4.6.3 Gas sensors 4.6.4 Restricted breathing enclosures “nR” in combination with a gas detection system
27	4.7 Internal combustion engines 4.8 Electrostatic risks 4.8.1 Bonding 4.8.1.1 General 4.8.1.2 Insulated metal parts
28	4.8.2 Circuit resistance 4.8.3 Non-conductive parts 4.8.3.1 Non-conductive parts for category 3G and 2G
29	4.8.3.2 Non-conductive parts for category 3D and 2D 4.8.4 Transmission belts 4.8.5 Hydraulic systems
30	4.8.6 Castors and wheels 4.8.6.1 General
31	4.8.6.2 Dissipative castors and wheels 4.9 Requirements for brakes, clutches and couplings 4.9.1 General 4.9.2 Mechanical clutches and couplings 4.9.3 Hydrokinetic clutches 4.9.4 Service brakes and friction clutches for category 3G and 3D trucks
32	4.9.5 Service brakes and friction clutches for category 2G trucks 4.9.5.1 General 4.9.5.2 Liquid immersion 4.9.5.3 Flameproof enclosure 4.9.5.4 Constructional safety 4.9.6 Service brakes and friction clutches for category 2D trucks
33	4.9.7 Parking brakes 4.9.8 Emergency stop brake 4.10 Requirements for pneumatic systems 4.11 Flammability of non-metallic materials 5 Verification of safety requirements and/or protective measures 5.1 Determination of the maximum surface temperatures 5.1.1 General 5.1.2 Test conditions
34	5.1.3 Test procedures 5.1.3.1 Self-propelled trucks with self-propelled lifting power including driverless trucks
35	5.1.3.2 Pedestrian propelled trucks with manually operated lifting function 5.1.3.3 Self-propelled trucks with manually operated lifting function 5.1.3.4 Pedestrian propelled trucks with self-propelled lifting function 5.1.3.5 Test procedure for tractors, burden and personnel carriers including driverless
36	5.1.4 Measurements
37	5.2 Measurement of circuit resistance and capacitance 5.2.1 Verification and tests of circuit resistance and bonding resistance
38	5.2.2 Measurement of capacitance of insulated metal parts 6 Information for use 6.1 General
39	6.2 Instruction handbook 6.2.1 Operation of the truck 6.2.2 Service and maintenance of the truck
40	6.2.3 Additional safety information
41	6.2.4 Information for charging of the battery and battery handling 6.3 Marking 6.3.1 General 6.3.2 Minimum marking
42	6.3.3 Additional marking according to this document (Ex – marking)
43	6.4 Warning labels
44	Annex A (normative)List of significant hazards
45	Annex B (informative)Relationship between zones (area classification) and truck categories
46	Annex C (informative)Typical example of cladding of load handling devices
48	Annex D (informative)Typical examples of non-conductive surface areas according to 4.8.3.1
51	Annex E (normative)Requirements for transmission belts in accordance with ISO 9563:2015 or ISO 1813:2014
52	Annex F (informative)Significant technical changes between this document and the previous edition of this European Standard
53	Annex G (informative)Warning labels for trucks with restricted breathing enclosure(s) in combination with gas detection system
54	Annex ZA (informative)Relationship between this European Standard and the essential Health and Safety Requirements of Directive 2014/34/EU aimed to be covered

Additional information

Status	Definitive
Pages	60
Publication Date	2024-01-16
ISBN	978 0 539 16360 5
Standard Number	BS EN 1755:2024
Title	Industrial trucks. Safety requirements and verification. Supplementary requirements for operation in potentially explosive atmospheres
Identical National Standard Of	EN 1755
Replaces	BS EN 1755:2015
Descriptors	Approval testing, Mist, Explosive atmospheres, Safety measures, Vapours, Verification, Gases, Occupational safety, Operating conditions, Flammable materials, Dust, Conformity, Classification systems, Instructions for use, Chemical composition, Flammable atmospheres, Carbon disulfide, Marking, Health and safety requirements, Industrial trucks, Manually-operated devices, Hazards
Publisher	BSI
Committee	MHE/7
ICS Codes	53.060 - Industrial trucks

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