ISO 9151:2016 熱と炎に対する防護服—炎にさらされたときの熱伝達の決定 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 94, Personal safety — Protective clothing and equipment, Subcommittee SC 13, Protective clothing and by Technical Committee CEN/TC 162, Protective clothing including hand and arm protection and lifejackets in collaboration.

This second edition cancels and replaces the first edition (ISO 9151:1995), of which Clauses/subclauses 2, 3.3, 5.1, 5.2, 5.3, 5.6, 6, 8.1, 8.2, 9.1.2, 9.3.1, 9.3.2, 10, all figures, and Annexes A and B have been technically revised. Tolerances have been added to specified dimensions where appropriate. Results of a recent inter-laboratory trial have been added to Annex A.

To improve reproducibility, the following major modifications have been made from the previous version of this test method:

• a) The percentage minimum purity of the propane used has been provided (see 5.2);
• b) Two alternative methods for constructing the calorimeter are described with additional information on the figures; additional instructions are given for inserting the calorimeter into the mounting block; and the total mass of the calorimeter and mounting block is specified (see 5.3);
• c) Tolerances for the dimensions of machined parts have been added to text and drawings where required;
• d) Control of air movement during testing is specified (see Clause 6);
• e) The specified relative humidity and temperature ranges for the conditioning and testing atmospheres have been changed (see 8.1 and 8.2);
• f) Additional procedures for calibration and stabilization of thermocouple temperature, including a procedure to check on the linearity of the thermocouple output during regulation of the incident heat flux density, have been added (see 9.1.1 and 9.1.2); and
• g) Test report requirements have been revised (see Clause 10).
• This corrected version of ISO 9151:2016 includes the following changes:

• 5.3, second paragraph, the tolerance’s value has been corrected from “± 002” to “± 0,002”;
• 9.3.3, second paragraph, the reference to Annex A has been corrected to Annex B.

Introduction

Heat transmission through clothing is largely determined by its thickness including any air gaps trapped between adjacent layers. The air gaps can vary considerably in different areas of the same clothing assembly. The present method provides a grading of materials when tested under standard test conditions without an air gap.

1 Scope

This document specifies a method for determining the heat transmission through materials or material assemblies used in protective clothing. Materials may then be ranked by comparing heat transfer indices, which provide an indication of the relative heat transmission under the specified test conditions. The heat transfer index should not be taken as a measure of the protection time given by the tested materials under actual use conditions.

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 definitions apply.

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