ISO 11393-1:2018 ハンドヘルドチェーンソーのユーザーのための保護服—パート1：チェーンソーによる切断に対する耐性をテストするためのテストリグ | ページ 2

Foreword

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

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This document was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 162, Protective clothing including hand and arm protection and lifejackets, in collaboration with ISO Technical Committee TC 94, Personal safety — Personal protective equipment, Subcommittee SC 13, Protective clothing, in accordance with the agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 11393-1:1998), which has been technically revised. The main changes compared to the previous edition are as follows:

• the figures have been redrawn;
• measurement tolerances have been added;
• the Introduction, the term “hand-held chainsaws primarily constructed for cutting wood” has been added;
• the Scope, the definition has been specified;
• the normative references have been updated;
• the terms and definitions have been revised and updated;
• Clause 4, the description has been revised;
• 5.2, the definition has been specified;
• 5.3, the definition has been specified, a method for measuring the chain tension is added, the description of the saw chain has been updated and the definition of the release system has been revised;
• 5.4, the description has been specified and the description of the foam has been updated;
• 7.5, the description has been specified and the definition of the chain has been updated;
• Annex A, the description has been revised;
• the previous Annex B has been removed and replaced with a new Annex B;
• a new Annex C has been added.

A list of all parts in the ISO 11393 series can be found on the ISO website.

Introduction

This document forms part of a series concerned with personal protective equipment (PPE) designed to protect against the risks arising from the use of hand-held chainsaws primarily constructed for cutting wood.

The portable hand-held powered chainsaws are normally operated by electric or internal combustion engines. Experience has shown that the specification of the fuel operated engine is difficult. In order to be able to control the testing parameters, these problems have been eliminated by selecting the flywheel method described in this document.

No PPE can ensure a 100 % protection against cutting from a hand-held chainsaw. Nevertheless, experience has shown that it is possible to design PPE that offers a certain degree of protection.

Different functional principles may be applied in order to give protection. These include:

• a) chain slipping: on contact the chain does not cut the material;
• b) clogging: fibres are drawn by the chain into the drive sprocket and block chain movement;
• c) chain braking: fibres have a high resistance to cutting and absorb rotational energy, thereby reducing the chain speed.

Often more than one principle is applied.

1 Scope

This document specifies the test rig for assessing the resistance to cutting of protective clothing, footwear and gloves by hand-held chainsaws. It also describes the calibration procedure.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses: