ISO INTERNATIONAL STANDARD 3457 Fourth edition 2003-05-15 Earth-moving machinery Guards - Definitions and requirements Engins de terrassement Protecteurs - Définitions et exigences Reference number ISO 3457:2003(E) ISO @ ISO 2003 ISO 3457:2003(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Barrier guards 6 Fenders 7 Fan guards 8 Thermal guards 6 Hose guards 10 Distance guarding Bibliography . @Iso2003—All rights reserved ili ISO 3457:2003(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been non-governmental,inliaisonwithIsO,also take part in the work.Iso collaborates closely with the International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. ISO 3457 was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety requirements and human factors. This fourth edition cancels and replaces the third edition (IsO 3457:1986), which has been technically revised. iv @Iso 2003 - All rights reserved ISO 3457:2003(E) Introduction This International Standard provides performance requirements for guards and other means of protecting personnel from unintentional contact with common mechanical, fluid or thermal hazards on earthmoving machinery during normal machine operation and routine maintenance. Relationships between the distance separating a guard from a hazardous component and the guard opening size based on anthropometric data are included. Some factors having a significant effect upon personnel protection, such as operator and service personnel training, experience and careful practice, are outside the scope of this International Standard. permissible. In complying with this International Standard, the following three safety principles are to be considered, in the order given, based on feasibility: eliminate potential hazards by machine design; b) c)warn of potential safety hazards where neither a) nor b) is feasible. @ISO2003—All rightsreserved INTERNATIONAL STANDARD ISO3457:2003(E) Earth-moving machinery Guards Definitions and requirements Scope This International Standard defines principal terms and specifies requirements for, and characteristics of guards and other means of protecting personnel from mechanical, fluid or thermal hazards associated with the operation and routine maintenance of earth-moving machinery as defined in isO 6165, when used as intended by the manufacturer. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso 2867, Earth-moving machinery — Access systems Iso 3411, Earth-moving machinery — Human physical dimensions of operators and minimum operator space envelope Iso 6165, Earth-moving machinery— Basic types — Vocabulary Iso 6682, Earth-moving machinery Zones of comfort and reach for controls IsO 12508, Earth-moving machinery - Operator station and maintenance areas - Bluntness of edges Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 guard protective device, alone or combined with other parts of the machine, designed and fitted to minimize the possibility of contact with a potentially hazardous machine component 3.1.1 barrierguard guard that restricts the movement of a person's body or a part of it, in order to