ENISO 10497
EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHE NORM
February 2010
ICS 23.060.01
Supersedes EN ISO 10497:2004
English Version
Testing of valves - Fire type-testing requirements (isO
10497:2010)
Essais des appareils de robinetterie -Exigences de I'essai
Prufung von Armaturen - Anforderungen an die Typpruifung
au feu (ISo 10497:2010)
auf Feuersicherheit (IS0 10497:2010)
This European Standard was approved by CEN on 26 January 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe an 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 CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by tra nslation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia. Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
cen
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
2010CEN All rights of exploitation in any form and by any means reserved
Ref. No.EN ISO 10497:2010: E
worldwide for CEN national Members. ENISO10497:2010(E)
Foreword
This document (EN ISO 10497:2010)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of an identical text or by endorsement, at the latest by August 2010, and conflicting national standards shall be withdrawn at the latest by August 2010 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. Thisdocument supersedes ENISO10497:2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,Denmark,Estonia,Finland, France,Germany,Greece,Hungary,Iceland, Ireland,Italy,Latvia Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
Endorsementnotice
The text of ISO 10497:2010 has been approved by CEN as a EN ISO 10497:2010 without any modification ISO10497:2010(E)
Contents
Page
Foreword Introduction 1
.iy
Scope Normative references. Terms and definitions.. Test conditions.. Direction and conditions forvalves to betested
2 3 4 4.1 4.2 Pressure relief provision... 5
Fire test method.
5.1 General warning . 5.2 Principle. 5.3 Apparatus 5.4 Test fluid. 5.5 Testfuel, 5.6 Procedure 6
Performanc
10 10 10 10 ? 1 11 12
6.1 General 6.2 Through-seat leakage during burn period....... 6.3 External leakage during burn and cool-down periods ... 6.4 Low-pressure test through-seat leakage after cool-down. 6.5 Operability.... 6.6 External leakagefollowingoperationaltest 6.7 Test report... 7
Qualification of other valvesbyrepresentativesize,pressure rating andmaterialsof construction..
.13 13 13 14
7.1 General... 7.2 Materials of construction...... 7.3 Qualificationof valves by nominal size 7.4 Qualification of valves bypressure rating... 7.5 Special marking...... Bibliography
4
14
6
ISO 2010 All rights reserved
ii ISO10497:2010(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 InternationalElectrotechnicalCommission(iEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC 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. ISO10497wasprepared byTechnical Committee ISO/TC153,Valves,SubcommitteeSC1,Design manufacture, marking and testing. This third edition cancels and replaces the second edition (Is 10497:2004), which has been technically revised.
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ISO 2010 All rights reserved ISO10497:2010(E)
Introduction
This International Standard covers the requirements and method for evaluating the performance of valves whentheyareexposed todefinedfireconditions.Theperformancerequirements establish limits 0 acceptability of a valve,regardless of size or pressurerating.The burn periodhas been establishedto 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 10, 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 lowertestpressure 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 valuetobettersimulatethe expectedservice conditions inthesefacilities. 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 can be injurious to health, if adequate precautions are not taken. This International Standard refers only to technical suitability and does notabsolvetheuserfromlegalobligationsrelatingtohealthandsafetyatanystageoftheprocedure
@ ISO 2010 All rights reserved INTERNATIONAL STANDARD
ISO10497:2010(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 is not applicable to 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. electrical, pneumatic or hydraulic) can need special protection to operate in the environment considered in this valve test, and the fire testing of such actuators is outside the scope of this International Standard. Fire test certificates of valves previously tested according to previous editions of Iso 10497 and to similar internationally recognized fire test standards are also acceptable. NOTE For the purposes of this International Standard, the terms “fire type-test" and “fire test" are synonymous
2 Normative references The following referenced documents are indispensable for the application 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. Iso 7-1,Pipe threads where pressure-tight joints are made on the threadsPart 1: Dimensions,tolerances and designation IEc60584-2,Thermocouples—Part2:Tolerances
3Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 nominal size DN alphanumeric designation of size for components of a pipework system, which is used for reference purposes comprising the letters DN followed by a dimensionless whole number which is indirectly related to the physical size,in millimetres, of the bore or outside diameter of the end connections NOTE Adapted from ISO 6708:—, definition 2.1. 3.2 nominal pressure PN numerical designation relating to pressure which is a convenient rounded number for reference purposes, and which comprises the letters PN followed by the appropriate reference number NOTE 1 It is intended that all equipment of the same nominal size (DN) designated by the same PN number have compatible mating dimensions.
1
@ ISO 2010 - All rights reserved ISO10497:2010(E)
NOTE2 The maximum allowable pressure depends on materials, design and working temperatures, and is selected from the tables of pressure/temperature ratings given in the appropriate standards. NOTE3 AdaptedfromISO7268:—,Clause2.1 3.3 NPS alphanumeric designation of size for components of a pipework system, which is used for reference purposes and which comprises the letters NPs followed by a dimensionless number indirectly related to the physical size ofthe boreoroutside diameter ofthe end connections NOTE The number following the letters NPS does not represent a measurable value and is not intended to be used for calculation purposes except where specified in the relevant standard 3.4 class alphanumeric designation used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a pipework system,which comprises the word “Class"followed by a dimensionless whole number NOTE The number following the word "Class" does not represent a measurable value and is not intended to be used for calculation purposes except where specified in the relevant standard. 3.5 symmetric seated valve valve with an internal construction, which has a plane of symmetry perpendicular to the axis of the body ends NOTE This is a valve where both seat and sealing elements are identical. 3.6 asymmetric seatedvalve valve with an internal construction, which has no plane of symmetry perpendicular to the axis of the body ends NOTE This is a valve with a single seat offset from the shaft centreline. 3.7 soft seat softseal seat or sealing element made from, or including, a significant amount of thermoplastic or elastomeric material
4 Test conditions 4.1 Directionand conditionsforvalvestobetested 4.1.1 Symmetric seated valves intended by the manufacturer for bi-directional installation shall be tested in one direction only. 4.1.2 Asymmetric seated valves intended by the manufacturer for bi-directional installation shall be tested by carrying out the burn test procedure twice, once in each direction of the potential installation. The same valve may be refurbished and re-tested, or another, identical, valve may be tested in the other direction 4.1.3 Valves intended solely for unidirectional installation shall be clearly and permanently marked as such and shall be tested in the stated direction of installation.
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ISO 2010 All rights reserved