ISO 23935:2006

Aircraft — Environmental test procedures for airborne fluid system components — Resistance to fire in designated fire zones

ISO 23935:2006 specifies the requirements for tests which may be applied to all fluid system components located in zones designated as "fire zones" and built to satisfy the minimum level specified for withstanding fire. It does not relate to withstanding fire outside designated fire zones, nor to flammability requirements, or to those conditions induced by the flame coming from the combustion chamber.

Aéronefs — Méthodes d'essai en environnement des éléments de systèmes de fluides embarqués — Tenue au feu dans les zones désignées "zone de feu"

General Information

• Status: Published
• Publication Date: 13-Jun-2006
• ICS: 49.080 - Aerospace fluid systems and components
• Technical Committee: ISO/TC 20/SC 10 - Aerospace fluid systems and components
• Drafting Committee: ISO/TC 20/SC 10/WG 14 - Hose assemblies
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 06-Nov-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 23935
First edition
2006-06-15


Aircraft — Environmental test procedures
for airborne fluid system components —
Resistance to fire in designated fire
zones
Aéronefs — Méthodes d'essai en environnement des éléments de
systèmes de fluides embarqués — Tenue au feu dans les zones
désignées «zone de feu»





Reference number
ISO 23935:2006(E)
©
ISO 2006

---------------------- Page: 1 ----------------------
ISO 23935:2006(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat ac-
cepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation pa-
rameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2006
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO 2006 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 23935:2006(E)
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 Inter-
national Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an Interna-
tional Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 23935 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee
SC 10, Aerospace fluid systems and components.

© ISO 2006 – All rights reserved iii

---------------------- Page: 3 ----------------------
INTERNATIONAL STANDARD ISO 23935:2006(E)

Aircraft — Environmental test procedures for airborne fluid
system components — Resistance to fire in designated fire
zones
CAUTION — Precautions shall be taken to safeguard the health of personnel conducting tests against
the risk of fire, inhalation of smoke and/or toxic products of combustion.
1 Scope
This International Standard specifies the requirements for tests which may be applied to all fluid system com-
ponents located in zones designated as “fire zones” and built to satisfy the minimum level specified for with-
standing fire.
This International Standard does not relate to withstanding fire outside designated fire zones, nor to
flammability requirements, or to those conditions induced by the flame coming from the combustion chamber.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 2685:1998, Aircraft — Environmental test procedure for airborne equipment — Resistance to fire in
designated fire zones.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
designated fire zone
region of an aircraft, for example compartments containing main engines and auxiliary power units, desig-
nated as such by the aircraft designer in accordance with the requirements of the approving authority
3.2
component
any part of a fluid system which is to convey and/or contain fluid in liquid or gaseous condition
3.3
fire resistant
grade designating components capable of withstanding the application of heat by a standard flame for 5 min
3.4
fireproof
grade designating components capable of withstanding the application of heat by a standard flame for 15 min
© ISO 2006 – All rights reserved 1

----------------
...