1、BS EN ISO10497:2010ICS 13.220.40; 23.060.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTesting of valves Fire type-testingrequirements (ISO10497:2010)This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 Mar
2、ch2010 BSI 2010ISBN 978 0 580 58705 4Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 10497:2010National forewordThis British Standard is the UK implementation of EN ISO 10497:2010.It supersedes BS EN ISO 10497:2004 which is withdrawn.The UK participation in its preparation was e
3、ntrusted to TechnicalCommittee PSE/18/1, Industrial valves, steam traps, actuators andsafety devices against excessive pressure - Valves - Basic standards.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all
4、 the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10497 February 2010 ICS 23.060.01 Supersedes EN ISO 10497:2004English Ver
5、sion Testing of valves - Fire type-testing requirements (ISO 10497:2010) Essais des appareils de robinetterie - Exigences de lessai au feu (ISO 10497:2010) Prfung von Armaturen - Anforderungen an die Typprfung auf Feuersicherheit (ISO 10497:2010) This European Standard was approved by CEN on 26 Janu
6、ary 2010. 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 obt
7、ained 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Manag
8、ement 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, Netherl
9、ands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in
10、 any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10497:2010: EBS EN ISO 10497:2010EN ISO 10497:2010 (E) 3 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
11、 “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
12、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. This document supersedes EN ISO 10497:2004. According to the CEN/CENELEC
13、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, L
14、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10497:2010 has been approved by CEN as a EN ISO 10497:2010 without any modification. BS EN ISO 10497:2010ISO 10497:2010(E) ISO 2
15、010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 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 3 5 Fire test method.3 5.1 General warning 3 5.2 Principle3 5.3 Ap
16、paratus.3 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 period10 6.3 External leakage during burn and cool-down periods 10 6.4 Low-pressure test through-seat leakage after cool-down 11 6.5 Operability11 6.6 External leakage foll
17、owing operational test .11 6.7 Test report12 7 Qualification of other valves by representative size, pressure rating and materials of construction.13 7.1 General .13 7.2 Materials of construction13 7.3 Qualification of valves by nominal size 14 7.4 Qualification of valves by pressure rating14 7.5 Sp
18、ecial marking .14 Bibliography16 BS EN ISO 10497:2010ISO 10497:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normall
19、y 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
20、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 In
21、ternational 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
22、 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 third edition cance
23、ls and replaces the second edition (ISO 10497:2004), which has been technically revised. BS EN ISO 10497:2010ISO 10497:2010(E) ISO 2010 All rights reserved vIntroduction This International Standard covers the requirements and method for evaluating the performance of valves when they are exposed to d
24、efined 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 magni
25、tude, 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
26、 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 p
27、ressure 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 provi
28、sions 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 not absolve the user from legal obligations relat
29、ing to health and safety at any stage of the procedure. BS EN ISO 10497:2010BS EN ISO 10497:2010INTERNATIONAL STANDARD ISO 10497:2010(E) ISO 2010 All rights reserved 1Testing of valves Fire type-testing requirements 1 Scope This International Standard specifies fire type-testing requirements and a f
30、ire 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
31、 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 pr
32、eviously 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 referen
33、ced 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 thre
34、ads 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 terms and definitions apply. 3.1 nominal size DN alphanumeric designation of size for components of a pipework system, which is us
35、ed 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 design
36、ation 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 dimen
37、sions. BS EN ISO 10497:2010ISO 10497:2010(E) 2 ISO 2010 All rights reservedNOTE 2 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. NOTE 3 Adapted from ISO 7268:, C
38、lause 2.1. 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 of the bore or outside diameter of the end connections NOTE Th
39、e 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 char
40、acteristics 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 s
41、tandard. 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 seated valve valve with an internal construction, which has no pla
42、ne 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 soft seal seat or sealing element made from, or including, a significant amount of thermoplastic or elastomeric material 4 Test conditions 4.1 Direction a
43、nd conditions for valves to be tested 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
44、 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 suc
45、h, and shall be tested in the stated direction of installation. BS EN ISO 10497:2010ISO 10497:2010(E) ISO 2010 All rights reserved 34.1.4 If the valve being tested is fitted with a gearbox or other such manual device, only that particular assembly shall qualify. If a valve can be supplied with or wi
46、thout a gearbox, testing with a gearbox fitted shall qualify valves without a gearbox, but not the converse. 4.1.5 Valves (and gearboxes) shall not be protected with insulation material of any form during testing, except where such protection is part of the design of the component(s). 4.2 Pressure r
47、elief provision If the valve under test incorporates a pressure relief device as part of its standard design and if this device activates during the fire test, the test shall be continued and any leakage to atmosphere from the device shall be measured and counted as external leakage. If the design i
48、s such that the device vents to the downstream side of the valve, any leakage shall be counted as through-seat leakage (see 5.6.11 and 5.6.13). However, the test shall be stopped if the system pressure relief device described in 5.3.2.8 activates. 5 Fire test method 5.1 General warning Fire testing
49、of valves is potentially hazardous and it is essential that the safety of personnel be given prime consideration. Given the nature of the fire test and the possibility of weaknesses in the design of the test valve and test equipment, hazardous rupture of the pressure boundary could occur. Adequate shields in the area of the test enclosure and other appropriate means for the protection of personnel are necessary. 5.2 Principle A closed valve, completely filled with water under pressure, is completely enveloped in flames with an environmental tempera
