ISO INTERNATIONAL STANDARD 20474-1 Second edition 2017-07 Earth-moving machinery Safety - Part 1: General requirements Engins de terrassement - Sécurité- Partie 1: Sécurité Reference number ISO 20474-1:2017(E) International Organization for Standardization =ZHEJIANG INST OF STANDARDIZATION C1 5956617 @ IS0 2017 vided by IHS under Not for Resale, 2017/9/8 08:57:10 itted without license from IHS IS0 20474-1:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, 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 the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internatinair Prganization for Standardization ensee-ZHEJIANG INST OF STANDARDIzARoISQa7 - All rights reserved networking permited without license from IHS IS0 20474-1:2017(E) Contents Page Foreword ..vi Introduction. .. vii 1 Scope. 2 Normative references 3 Terms and definitions 4 Safety requirements and protective measures 4.1 General .6 1 4.2 Access systems.. 4.2.1 General requirements. .7 4.2.2 Access to articulated machines 4.3 Operator's station. 7 4.3.1 Generalreguirements 4.3.2 Operator's station equipped with a cab ..8 4.3.3 Operator-protective structures .9 4.3.4 Falling-object protective structures (FOPS) .10 4.3.5 Elevating operator's station. .10 4.3.6 Replacement of operator protective structure ..10 4.4 Seats. .10 4.4.1 Operator's seat. ..10 4.4.2 Additional seat .10 4.5 Operator's controls and indicators 11 4.5.1 General ..11 4.5.2 Starting and stopping system .11 4.5.3 Inadvertent activation .11 4.5.4 Pedals. .11 4.5.5 Emergency attachment lowering .11 4.5.6 Uncontrolled motion. .12 4.5.7 Remote control. ..12 4.5.8 Visual displays/control panels, indicators and symbols .12 4.5.9 Ride-on machine controls accessible from ground level .12 4.5.10 Non-riding machine controls .12 4.6 Steering systems 1.2 4.6.1 General. .12 4.6.2 Wheeled machines .12 4.6.3 Crawler machines. .13 4.7 Brake systems 13 4.8 Visibility. 13 4.8.1 Operator's field of view ..13 4.8.2 Lighting, signalling and marking lights, and reflex-reflector devices. ..13 4.9 Warning devices and safety signs ..13 4.10 Tyres and rims. .14 4.11 Stability ..14 4.12 Object handling. ..14 4.12.1 Lifting devices for object handling ..14 4.12.2 Lowering control device .14 4.13 Noise .14 4.13.1 Requirements for noise reduction .14 4.13.2 Noise emission measurement ..14 4.14 Protective measures and devices. ..15 4.14.1 Contaminated area. ..15 4.14.2 Hot parts .15 4.14.3 Moving parts. ..15 4.14.4 Guards. ..15 ntemaional oganzation@sS207 -All rights reserved iii ISee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS Not for Resale, 2017/9/8 08:57:10