ISO INTERNATIONAL STANDARD 3691-4 Second edition 2023-06 Industrial trucks Safety requirements and verification Part 4: Driverless industrial trucks and their systems Chariots de manutention - Exigences de sécurité et verification - Partie 4: Chariots sans conducteur et leurs systemes Reference number IS0 3691-4:2023(E) osi @IS02023 IS0 3691-4:2023(E) COPYRIGHT PROTECTED DOCUMENT @IS02023 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on or ISo's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2023 - All rights reserved IS0 3691-4:2023(E) @ Contents Page Foreword ..V Introduction. .. vi 1 Scope. 2 Normative references .. 3 Terms and definitions. ..4 4 Safety requirements and/or protective/risk reduction measures ..10 4.1 General .10 4.1.1 Overall requirements. ..10 4.1.2 Normal climatic conditions. .10 4.1.3 Electrical requirements. 4.1.4 Stored energy components. .12 4.1.5 Edges or angles .12 4.1.6 Guards ..12 4.1.7 Interlocking devices for guards ..12 4.1.8 Two-hand control devices .12 4.1.9 Transmission parts. .12 4.1.10 Electro-sensitive protective equipment .12 4.1.11 Pressure-sensitive protective devices .12 4.1.12 Hydraulic systems. .12 4.1.13 Pneumatic systems. .13 4.1.14 ..13 Avoidanceofautomaticrestart 4.1.15 Foot protection 13 4.1.16 Transport of the truck and removable attachments .13 4.1.17 Seats. ..14 4.1.18 Means of access. .14 4.1.19 High temperatures. .14 4.1.20 Exhaust emissions .14 4.1.21 Access and emergency exit 4.1.22 Driving position .15 4.1.23 Electrostatic charges. ..15 4.1.24 Protective structures 15 4.1.25 Errors of fitting. 15 4.1.26 Normal stop .. 15 4.1.27 Operational stop .16 4.2 Braking system .. 16 4.3 Speed control 16 4.3.1 Overspeed detection .16 4.3.2 Speed and stability. ..16 4.4 Automatic battery charging. ..16 4.5 Load handling. .16 4.6 Steering 4.7 Stability .17 4.7.1 General .17 4.7.2 Tilting platform stability test .. 17 4.7.3 Stability requirements for trucks not covered by 4.7.2 .18 4.8 Protective devices and complementary measures 4.8.1 Emergency stop .18 4.8.2 Detection of persons in the path ..19 4.9 Modes of operation.. 21 4.9.1 General 21 4.9.2 Automatic mode 22 4.9.3 Manual mode ..23 4.9.4 Maintenance mode. ..24 IS0 2023 - All rights reserved iii IS0 3691-4:2023(E) 4.10 Trucks intended to tow trailers. 24 4.11 Safety-related parts of the control system. .24 4.12 Electromagnetic immunity 29 4.13 Conveyors fitted to a truck 30 4.13.1 Trucks fitted with conveyors 30 4.13.2 Conveyors 30 4.14 Warning systems. .31 5 Verification of the safety requirements and/or protective/risk reduction measures 32 5.1 General. 32 5.2 Tests for detection of persons. 32 5.3 Stabilitytests .33 5.3.1 General 33 5.3.2 Stability tests for trucks not covered by 4.7.2 33 5.4 Fitness for purpose. 34 5.4.1 General 34 5.4.2 Structural tests. 34 5.4.3 Dynamic tests. 34 6 Information for use .35 6.1 General. 35 6.2 Instruction handbook. 35 6.2.1 General .35 6.2.2 Concerning the trucks and system .35 6.2.3 Operation of the trucks and system 36 6.2.4 Routine service and maintenance of the trucks and system. 36 6.2.5 Operating information 37 6.2.6 Informationfortheapplication 37 6.2.7 Details for floor/ground conditions 38 6.2.8 Details for power sources. 38 6.2.9 Truck modification 38 6.3 Minimum marking. 38 6.3.1 Marking. 38 6.3.2 Warning signs 38 6.3.3 Information plates. 39 6.4 Putting into service (commissioning) 40 Annex A (normative) Requirements for preparation of the operating zones 41 Annex B (informative) List of significant hazards .51 Annex C (normative) Determination of rated capacity .57 Annex D (informative) Load tran