EN ISO 10497:2004

SLOVENSKI STANDARD
01-november-2004
Preskušanje ventilov - Zahteve za protipožarno preskušanje
Testing of valves - Fire type-testing requirements (ISO 10497:2004)
Prüfung von Armaturen - Anforderungen an die Typprüfung auf Feuersicherheit (ISO
10497:2004)
Essais des appareils de robinetterie - Exigences de l'essai au feu (ISO 10497:2004)
Ta slovenski standard je istoveten z: EN ISO 10497:2004
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 10497
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2004
ICS 23.060.01
English version
Testing of valves - Fire type-testing requirements (ISO
10497:2004)
Essais des appareils de robinetterie - Exigences de l'essai Prüfung von Armaturen - Anforderungen an die Typprüfung
au feu (ISO 10497:2004) auf Feuersicherheit (ISO 10497:2004)
This European Standard was approved by CEN on 14 August 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10497:2004: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 10497:2004) has been prepared by Technical Committee ISO/TC 153
"Valves" in collaboration with Technical Committee CEN/TC 69 "Industrial valves", the
secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by February 2005, and conflicting national
standards shall be withdrawn at the latest by February 2005.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 10497:2004 has been approved by CEN as EN ISO 10497:2004 without any
modifications.
INTERNATIONAL ISO
STANDARD 10497
Second edition
2004-08-15
Testing of valves — Fire type-testing
requirements
Essais des appareils de robinetterie — Exigences de l'essai au feu

Reference number
ISO 10497:2004(E)
©
ISO 2004
ISO 10497:2004(E)
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ii © ISO 2004 – All rights reserved

ISO 10497:2004(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 1
4 Test conditions. 2
4.1 Direction and conditions for valves to be tested. 2
4.2 Pressure relief provision. 2
5 Fire test method . 3
5.1 General warning . 3
5.2 Principle . 3
5.3 Apparatus. 3
5.3.1 General. 3
5.3.2 Specific apparatus . 4
5.4 Test fluid . 4
5.5 Test fuel. 4
5.6 Procedure. 4
6 Performance . 10
6.1 General. 10
6.2 Through-seat leakage during burn period. 10
6.3 External leakage during burn and cool-down periods. 10
6.4 Low pressure test through-seat leakage after cool-down. 10
6.5 Operability. 11
6.6 External leakage following operational test.11
6.7 Test report. 11
7 Qualification of other valves by representative size, pressure rating and materials of
construction . 12
7.1 General. 12
7.2 Materials of construction . 13
7.3 Qualification of valves by nominal size . 13
7.4 Qualification of valves by pressure rating . 14
7.5 Special marking. 15
Bibliography . 16

ISO 10497:2004(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
International 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
International 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 10497 was prepared by Technical Committee ISO/TC 153, Valves, Subcommittee SC 1, Design,
manufacture, marking and testing.
This second edition cancels and replaces the first edition (ISO 10497:1992), which has been technically
revised.
iv © ISO 2004 – All rights reserved

ISO 10497:2004(E)
Introduction
This International Standard covers the requirements and method for evaluating the performance of valves
when they are exposed to defined fire conditions. The performance requirements establish limits of
acceptability of a valve, regardless of size or pressure rating. The burn period has been established to
represent the maximum time required to extinguish most fires. Fires of longer duration are considered to be of
major magnitude with consequences greater than those anticipated in the test.
The test pressure during the burn is set at 0,2 MPa (2 bar) for soft-seated valves rated PN 16, PN 25 and
PN 40, Class 150 and Class 300, to better simulate the conditions that would be expected in a process plant
when a fire is detected and pumps are shut down. In this case, the source of pressure in the system is the
hydrostatic head resulting from liquid levels in towers and vessels. This situation is approximated by this lower
test pressure.
In production facilities, valves are typically of a higher rating and the pressure source is not easily reduced
when a fire is detected. Therefore, for all other valves, the test pressure during the burn is set at a higher
value to better simulate the expected service conditions in these facilities.
Use of this International Standard assumes that the execution of its provisions is entrusted to appropriately
qualified and experienced personnel, because it calls for procedures that may be injurious to health if
adequate precautions are not taken. This International Standard refers only to technical suitability and does
not absolve the user from legal obligations relating to health and safety at any stage of the procedure.

INTERNATIONAL STANDARD ISO 10497:2004(E)

Testing of valves — Fire type-testing requirements
1 Scope
This International Standard specifies fire type-testing requirements and a fire type-test method for confirming
the pressure-containing capability of a valve under pressure during and after the fire test. It does not cover the
testing requirements for valve actuators other than manually operated gear boxes or similar mechanisms
when these form part of the normal valve assembly. Other types of valve actuators (e.g
...