ISO 4254-13:2023 農業機械 ―安全性― Part 13: 大型ロータリーモア | ページ 2

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 established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of ISO document should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 7, Equipment for harvesting and conservation.

This second edition cancels and replaces the first edition (ISO 4254-13:2012), which has been technically revised.

The main changes are as follows:

• additional information has been added to the Scope regarding applicability;
• the Normative references have been updated;
• Clause 3:
  • some terms and definitions have been modified, added or removed;
  • former Figure 1 has been removed and subsequent figures have been renumbered;

• blade test and performance requirements have been moved to ISO 5718-2;

• Clause 4, subclauses 4.8, 4.9, 4.10 and 4.11 have been revised to reflect the strength and performance requirements in the standards concerned;

• Clause 5:

  • title has been revised;
  • Figure 2 (former Figure 3) has been modified;
  • Figure 3 (former Figure 4) has been modified;
  • 5.2.2.3 has been added to indicate a test condition;
  • 5.3.1.4 has been modified to indicate new requirements for test equipment;
  • 5.4.1.4 has been added to indicate new requirements for test equipment;
  • 5.4.5 test acceptance criteria has been modified;
  • 5.5.4 test acceptance criteria has been modified;
  • subclause 5.7 and succeeding subclauses have been removed;
  • subclause 5.8 and succeeding subclauses, including Table 1 and Figure 12, have been removed;
  • 5.6.2.6 has been modified to correct an error in the sand particle size requirements for test equipment;

• the Bibliography has been updated.