EN ISO 5659-1:1999

SLOVENSKI STANDARD
SIST EN ISO 5659-1:2000
01-maj-2000
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,62
Plastics - Smoke generation - Part 1: Guidance on optical-density testing (ISO 5659-
1:1996)
Kunststoffe - Rauchentwicklung - Teil 1: Anleitung zur Prüfung der optischen Dichte (ISO
5659-1:1996)
Plastiques - Production de fumée - Partie 1: Guide sur les essais de densité optique (ISO
5659-1:1996)
Ta slovenski standard je istoveten z: EN ISO 5659-1:1999
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 5659-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 5659-1:2000

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SIST EN ISO 5659-1:2000

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SIST EN ISO 5659-1:2000

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SIST EN ISO 5659-1:2000

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SIST EN ISO 5659-1:2000

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SIST EN ISO 5659-1:2000
IS0
INTERNATIONAL
STANDARD 5659-l
First edition
1996-04-o 1
- Smoke generation -
Plastics
Part 1:
Guidance on optical-density testing
P/as tiques - Production de fum&e -
Partie 7: Guide sur /es essais de densit optique
Reference number
IS0 5659-l : 1996(E)

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SIST EN ISO 5659-1:2000
IS0 5659=1:1996(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an Intern.ational
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 5659 was prepared by Technical Committee
ISO/TC 61, Plastics, subcommittee SC 4, Burning behaviour.
IS0 5659 consists of the following parts, under the general title Plastics -
Smoke generation:
Part I: Guidance on optical-density testing
- Part 2: Determination of optical density by a single-chamber test
Annexes A and B of this part of IS0 5659 are for information only.
0 IS0 1996
All rights reserved. Unless otherwise specified, no part of this publication may be
electronic or mechanical, including
reproduced or utilized in any form or by any means,
photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii

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SIST EN ISO 5659-1:2000
IS0 5659=1:1996(E)
@ IS0
Introduction
Smoke represents a major hazard in fires due to its capacity to obscure
vision by the absorption and scattering of light. Consequently, two threats
are obvious: the inhalation of hazardous gases and fumes and the obscur-
ation of light by smoke particulates leading to disorientation. These threats
interact in a complicated manner, but are usually dealt with by separate
procedures.
Smoke particulates reduce the visibility due to light absorption and scatter-
ing. Consequently, people may experience difficulties in finding exit signs,
doors and windows. Visibility is often determined as the distance at which
an object is no longer visible. It depends on many factors, but close rela-
tionships have been established between visibility and measurements of
the optical density of smoke, as depicted in figure 1.
The production of smoke and its optical properties are often measured
simultaneously with other fire properties, such as heat release and flame
spread. The measurements may be in small or full scale. They may be
performed in small-scale, closed systems and are called cumulative or
static methods. They may also be performed in a flow-through system,
and these are called dynamic methods.
A distinction is sometimes made between smoke and soot (see 7.2), with
the former being measured by optical means, while the latter is
determined by actual weighing of particulates collected (gravimetric
means). Since fire safety conce
...