ISO INTERNATIONAL 11228-1 STANDARD Second edition 2021-10 Ergonomics-Manualhandling Part 1: Lifting,loweringand carrying Ergonomie-Manutentionmanuelle- Partie1:Manutentionverticaleverslehaut,manutentionverticale verslebasetmanutentionhorizontale Reference number ISO11228-1:2021(E) ISO ISO2021 IS011228-1:2021(E) COPYRIGHTPROTECTEDDOCUMENT ISO2021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may 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. ISOcopyrightoffice CP40i:Ch.deBlandonnet8 CH-1214Vernier,Geneva Phone:+41227490111 Email:[email protected] Website:www.iso.org Published in Switzerland ii IS02021-All rights reserved IS011228-1:2021(E) Contents Page Foreword. iv Introduction .V 1 Scope. .1 2 Normativereferences .1 3 Termsanddefinitions 1 4 Riskreductionformanual liftingorcarryingtasks .3 4.1 General.. 3 4.2 Riskassessment(stepmodel) 3 4.2.1Usingthestepmodel 3 4.2.2Recommendedlimitformanuallifting,loweringandcarrying 6 4.2.3Cumulativemassofcarrying 9 4.3 Riskreduction 10 4.4 Additional considerations 10 AnnexA(informative)Ergonomicsapproachtothedesignofliftingandcarryingtasks .11 AnnexB(informative)Referencemassdetermination .17 AnnexC(informative)Assessmentmethodforrecommendedlimitsformass,frequency 19 andobjectposition AnnexD(informative)Liftingindex .27 AnnexE(informative)SimplifiedmodelforRMLandLIcalculation 29 AnnexF(informative)Multi-taskmanuallifting .31 AnnexG(informative)Examplesofmanualhandlingofobjects .42 AnnexH(informative)Carrying .52 AnnexI (informative)Exposureandrisk:thebasisforTableD.1 .55 Bibliography 61 IS02021-All rights reserved iii