《BS-EN-ISO-10497-2004.pdf》由会员分享,可在线阅读,更多相关《BS-EN-ISO-10497-2004.pdf(28页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN ISO 10497:2004 Testing of valves Fire type-testing requirements The European Standard EN ISO 10497:2004 has the status of a British Standard ICS 23.060.01 ? BS EN ISO 10497:2004 This British Standard was published under the authority of the Standards Policy and Strategy Commit
2、tee on 12 November 2004 BSI 12 November 2004 ISBN 0 580 44761 8 National foreword This British Standard is the official English language version of EN ISO 10497:2004. It is identical with ISO 10497:2004. It supersedes BS 6755-2:1987 which is withdrawn. The UK participation in its preparation was ent
3、rusted by Technical Committee PSE/7, Industrial valves, to Subcommittee PSE/7/1, Industrial valves Basic standards, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which impl
4、ement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication do
5、es not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/Europe
6、an committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page,t
7、he EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD
8、 NORME EUROPENNE EUROPISCHE NORM EN ISO 10497 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 lessai au feu (ISO 10497:2004) Prfung von Armaturen - Anforderungen an die Typprfung auf Feu
9、ersicherheit (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
10、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 re
11、sponsibility 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, Ir
12、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-
13、1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10497:2004: E Foreword This document (EN ISO 10497:2004) has been prepared by Technical Committee ISO/TC 153 “Valves“ in collaboration with Technical Committee C
14、EN/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
15、 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,
16、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. EN ISO 10497:2004 Ref
17、erence number ISO 10497:2004(E) INTERNATIONAL STANDARD ISO 10497 Second edition 2004-08-15 Testing of valves Fire type-testing requirements Essais des appareils de robinetterie Exigences de lessai au feu EN ISO 10497:2004 IS:79401 O4002(E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes.
18、 In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton ide ebtlnu deess the typefaces whice era hml era deddebicsnede to i dnanstlaled t noeh computfrep reormign tide ehtin.g In wodlnidaot gnhis file, trapise atpecc tiereht nser ehnopsiiblity fo not infriigngn
19、Aebods licensilop gnic.y ehT ISO tneClar Secrteiraat caceptl on siibality in this .aera Ai ebods a tredamafo kr Aebod SystemI sncotaropr.de teDails fo teh softwacudorp erts sut deo crtaee this PDF file cna f ebi dnuon tlareneG eh Info leratit evo the file; tP ehDc-Frtaeion marapterew setpo erimizde
20、for irpnti.gn Evyre caer neeb sah taken to sneeru that the file is suitlbae fosu re yb ISO memdob rebeis. In tlnu ehikletneve y ttah lborp aem leratit gno it is f,dnuo plsaee inform ttneC ehlar Secrteiraat ta the serddaig sleb nevwo. ISO 4002 All irthgs erse.devr lnUeto sswrehise specified, on trap
21、fo this lbupictaion maeb y cudorperro de tuilizi den yna form ro na ybm ynae,s lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65
22、eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dna ii EN ISO 10497:2004 iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Test conditions2 4.1 Direction and cond
23、itions for valves to be tested.2 4.2 Pressure relief provision2 5 Fire test method 3 5.1 General warning3 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 fuel4 5.6 Procedure.4 6 Performance 10 6.1 General.10 6.2 Through-seat leakage during burn pe
24、riod10 6.3 External leakage during burn and cool-down periods10 6.4 Low pressure test through-seat leakage after cool-down10 6.5 Operability11 6.6 External leakage following operational test.11 6.7 Test report11 7 Qualification of other valves by representative size, pressure rating and materials of
25、 construction 12 7.1 General.12 7.2 Materials of construction .13 7.3 Qualification of valves by nominal size13 7.4 Qualification of valves by pressure rating .14 7.5 Special marking.15 Bibliography .16 EN ISO 10497:2004 iv Foreword ISO (the International Organization for Standardization) is a world
26、wide 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 t
27、hat 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
28、 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
29、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 Tec
30、hnical 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. EN ISO 10497:2004 v Introduction This International Standard covers the requirements and
31、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 extinguis
32、h 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 th
33、e 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 produc
34、tion 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 t
35、his 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 suita
36、bility and does not absolve the user from legal obligations relating to health and safety at any stage of the procedure. EN ISO 10497:2004 INTENRATIONAL TSANDADR IS:79401 O4002(E) 1 Testing of valves Fire type-testing requirements 1 Scope This International Standard specifies fire type-testing requi
37、rements 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 nor
38、mal valve assembly. Other types of valve actuators (e.g. electrical, pneumatic or hydraulic) may 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. NOTE For the purposes of t
39、his 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
40、 the referenced document (including any amendments) applies. ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation IEC 60584-2, Thermocouples Part 2: Tolerances 3 Terms and definitions For the purposes of this document, the following
41、 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 bo
42、re or outside diameter of the end connections ISO 6708:1995, 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 int
43、ended that all equipment of the same nominal size (DN) designated by the same PN number have compatible mating dimensions. NOTE 2 The maximum allowable working pressure depends on materials, design and working temperatures, and is to be selected from the tables of pressure/temperature ratings given
44、in the appropriate standards. NOTE 3 Adapted from ISO 7268:1983, Clause 2. EN ISO 10497:2004 2 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
45、 to the physical size of the bore or outside diameter of the 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 use
46、d 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 int
47、ended 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 sealing elements are identical. 3.6
48、asymmetric seated valve 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. 4 Test conditions 4.1 Direction and conditions for valves to be tested 4.1.1 Symmetric seate
49、d 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 install
链接地址:https://www.31doc.com/p-3746975.html