IEC 60695-7-1:2010

Fire hazard testing - Part 7-1: Toxicity of fire effluent - General guidance

IEC 60695-7-1:2010 provides guidance on the factors which affect the toxic hazard from fires involving electrotechnical products, and provides information on the methodologies recommended by ISO TC 92 (SC 3) for estimating and reducing the toxic hazard from fires, as expressed in ISO 19706, ISO 13344 and ISO 13571. There is no single test to realistically assess toxic hazard in fires. Small-scale toxic potency tests are not capable on their own of assessing the toxic hazard in fires. Current toxicity tests attempt to measure the toxic potency of a laboratory generated fire effluent. Toxic potency should not be confused with toxic hazard. The main changes with respect to the previous edition are as follows:
- minor editorial and technical changes throughout;
- references to the ISO 9122 series have been deleted and the text throughout has been updated;
- definitions have been updated in accordance with ISO/IEC 13943:2008;
- dispersal volume is stated to be an important parameter in the assessment of toxic hazard;
- table 2 has been updated;
- figures 1 and 2 have both been updated.
This publication is to be read in conjunction with IEC 60695-7-2:2002.

Essais relatifs aux risques du feu - Partie 7-1: Toxicité des effluents du feu - Lignes directrices générales

La CEI 60695-7-1:2010 fournit des lignes directrices sur les facteurs qui affectent le danger toxique des feux impliquant des produits électrotechniques, et fournit des informations sur les méthodologies recommandées par le TC 92 (SC 3) de l'ISO concernant l'estimation et la réduction du danger toxique des incendies, tel qu'exprimé dans l'ISO 19706, dans l'ISO 13344 et dans l'ISO 13571. Il n'y a pas d'essai unique pour évaluer de façon réaliste le danger toxique des incendies. Les essais de potentiel toxique à petite échelle ne sont pas capables en eux-mêmes d'évaluer le danger toxique des incendies. Les essais de toxicité actuels tentent de mesurer le potentiel toxique d'un effluent du feu généré en laboratoire. Il convient de ne pas confondre potentiel toxique et danger toxique. Les principales modifications par rapport à l'édition précédente sont:
- modifications rédactionnelles et techniques mineures dans toute la norme;
- les références à la série ISO 9122 ont été supprimées et l'ensemble du texte a été mis à jour;
- les définitions ont été mises à jour, conformément à l'ISO/CEI 13943:2008;
- le volume de dispersion est spécifié comme étant un paramètre important dans l'évaluation du danger toxique;
- le Tableau 2 a été mis à jour;
- les Figures 1 et 2 ont été mises à jour.
Cette publication doit être lue conjointement avec la CEI 60695-7-2:2002.

General Information

• Status: Published
• Publication Date: 27-Jun-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.020 - Electrical engineering in general
• ICS: 29.060.20 - Cables
• Technical Committee: TC 89 - Fire hazard testing
• Drafting Committee: WG 11 - TC 89/WG 11
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jul-2010
• Completion Date: 28-Jun-2010

Relations

• Revises: IEC 60695-7-1:2004 - Fire hazard testing - Part 7-1: Toxicity of fire effluent - General guidance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60695-7-1 ®
Edition 3.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 7-1: Toxicity of fire effluent – General guidance

Essais relatifs aux risques du feu –
Partie 7-1: Toxicité des effluents du feu – Lignes directrices générales

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IEC 60695-7-1 ®
Edition 3.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Fire hazard testing –
Part 7-1: Toxicity of fire effluent – General guidance

Essais relatifs aux risques du feu –
Partie 7-1: Toxicité des effluents du feu – Lignes directrices générales

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 13.220.40; 29.020 ISBN 978-2-88912-013-0
– 2 – 60695-7-1 © IEC:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references.6
3 Terms and definitions .7
4 Factors determining toxic hazard .13
4.1 Evaluation of the toxic hazard .13
4.2 Burning rate.13
4.3 Toxicity of fire effluent .13
4.3.1 General .13
4.3.2 Asphyxiants .14
4.3.3 Carbon dioxide .14
4.3.4 Sensory and/or upper respiratory irritants.15
4.3.5 Unusually high toxicity and extreme toxic potency .15
4.4 Dispersal volume .15
4.5 Escape time .16
5 General aspects of small-scale test methods used to evaluate the toxic hazard of
fire gas effluent.16
5.1 General .16
5.2 Physical fire models.16
5.3 Static test methods .20
5.4 Dynamic test methods .20
5.5 Measurement of toxicity.20
5.5.1 General .20
5.5.2 Chemical analysis based methods.20
5.5.3 Methods based on animal exposure .21
6 Evaluation of test methods.21
6.1 Parameters to be considered .21
6.2 Selection of test specimen .21
7 Relevance of toxic hazard data to fire hazard assessment.21
Bibliography .24

Figure 1 – Different phases in the development of a fire within a compartment.18
Figure 2 – Evaluation and consideration of toxicity test methods .23

Table 1 – F values for irritants.15
Table 2 – Characteristics of fire types (from ISO 19706) .19

60695-7-1 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 7-1: Toxicity of fire effluent –
General guidance
FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60695-7-1 has been prepared by IEC technical committee 89: Fire
hazard testing.
This third edition cancels and replaces the second edition published in 2004. It constitutes a
technical revision.
The main changes with respect to the previous edition are listed below:
– minor editorial and technical changes throughout;
– Introduction – text referring to IEC 60695-7-50 and ISO/TS 19700 has been updated;
– references to the ISO 9122 series have been deleted (other than an historical reference
to ISO 9122-1 in the Introduction) and the text throughout has been updated;
– definitions have been updated in accordance with ISO/IEC 13943:2008;

– 4 – 60695-7-1 © IEC:2010
– dispersal volume is stated to be an important parameter in the assessment of toxic
hazard;
– Table 2 has been updated;
– Figures 1 and 2 have both been updated.
It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC
Guide 51.
The text of this standard is based on the following documents:
FDIS Report on voting
89/990/FDIS 89/1003/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This standard is to be used in conjunction with IEC 60695-7-2.
A list of all the parts of IEC 60695 series, under the general title of Fire hazard testing, can be
found on the IEC website.
Part 7 consists of the following parts:
Part 7-1: Toxicity of fire effluent – General guidance
Part 7-2: Toxicity of fire efflue
...