ISO 20474-7:2017

INTERNATIONAL ISO
STANDARD 20474-7
Second edition
2017-07
Earth-moving machinery — Safety —
Part 7:
Requirements for scrapers
Engins de terrassement — Sécurité —
Partie 7: Exigences applicables aux décapeuses
Reference number
ISO 20474-7:2017(E)
©
ISO 2017

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ISO 20474-7:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO 20474-7:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Safety requirements and protective measures . 2
4.1 General . 2
4.2 Operator’s seat . 2
4.3 Retarder . 2
4.4 Articulated frame lock . 2
4.5 Towing device . 2
4.6 Noise . 2
4.6.1 Sound power level . 2
4.6.2 Emission sound pressure level at operator’s station . 2
4.7 Access to engine compartment . 3
5 Information for use . 3
Annex A (informative) Illustrations. 4
Bibliography . 6
© ISO 2017 – All rights reserved iii

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ISO 20474-7:2017(E)

Foreword
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This document was prepared by Technical Committee ISO/TC 127, Earth-moving machinery,
Subcommittee SC 2, Safety, ergonomics and general requirements.
This second edition cancels and replaces the first edition (ISO 20474-7:2008), which has been technically
revised with the following changes:
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