1、June 2010 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 1
2、3.220.40; 23.060.01!$f1=“1671426www.din.deDDIN EN ISO 10497Testing of valves Fire type-testing requirements (ISO 10497:2010)English translation of DIN EN ISO 10497:2010-06Prfung von Armaturen Anforderungen an die Typprfung auf Feuersicherheit (ISO 10497:2010)Englische bersetzung von DIN EN ISO 10497
3、:2010-06Essais des appareils de robinetterie Exigences de lessai au feu (ISO 10497:2010)Traduction anglaise de DIN EN ISO 10497:2010-06SupersedesDIN EN ISO 10497:2004-11www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 22 pages06.10 DIN E
4、N ISO 10497:2010-06 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 153 “Valves” (Secretariat: AFNOR, France) in collaboration with Technical Committee CEN/TC 69 “Industrial valves” (Secretariat: AFNOR, France). The responsible
5、 German body involved in its preparation was the Normenausschuss Armaturen (Valves Standards Committee), Working Committee NA 003-01-05 AA Hhne. Amendments This standard differs from DIN EN ISO 10497:2004-11 as follows: a) The foreword has been revised. b) Introduction: Pressure rating PN 10 has bee
6、n added. c) Scope: A further paragraph regarding the applicability of previous editions of ISO 10497 has been added. d) Normative references have been updated. e) Terms and definitions have been editorially revised and 3.7 “soft seat” has been added. f) Clauses 4 and 5 have been editorially revised.
7、 g) In subclause 5.3.2.1, a note has been added. h) In subclause 5.6.4, a tolerance on all test pressures of 10 % has been added. i) Figures 1a and 1b have been modified and the numbering in subclauses 5.6.2 ff. has been adapted correspondingly. j) Figures 3 and 4 and the associated keys have been m
8、odified. k) In subclause 5.6.12, the warning note has been rendered more precise. l) The title of subclause 6.4 has been modified. m) Subclause 6.5 has been extended. n) In subclause 7.1, nominal sizes 2 1/16 and 9 as well as NPS 2 have been added. o) Subclause 7.2.3 has been extended. p) Table 3 ha
9、s been modified. q) The bibliography has been updated. Previous editions DIN EN ISO 10497: 2004-11 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10497 February 2010 ICS 23.060.01 Supersedes EN ISO 10497:2004English Version Testing of valves - Fire type-testing requirements (ISO 10497:2010
10、) 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 January 2010. CEN members are bound to comply with the CEN/CENELEC Internal
11、 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 CEN Management Centre or to any CEN member.
12、 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 Management Centre has the same status as the official versions. CEN members
13、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, Swe
14、den, 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 any form and by any means reserved worldwide for CEN national Members.
15、 Ref. No. EN ISO 10497:2010: EContents Page EN ISO 10497:2010 (E) DIN EN ISO 10497:2010-06 2 Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Terms and definitions .5 4 Test conditions 6 4.1 Direction and conditions for valves to be tested .6 4.2 Pressure relief provision 7 5 Fire test
16、method.7 5.1 General warning 7 5.2 Principle .7 5.3 Apparatus.7 5.4 Test fluid.8 5.5 Test fuel8 5.6 Procedure.8 6 Performance.14 6.1 General .14 6.2 Through-seat leakage during burn period14 6.3 External leakage during burn and cool-down periods 14 6.4 Low-pressure test through-seat leakage after co
17、ol-down 15 6.5 Operability15 6.6 External leakage following operational test .15 6.7 Test report16 7 Qualification of other valves by representative size, pressure rating and materials of construction.17 7.1 General .17 7.2 Materials of construction17 7.3 Qualification of valves by nominal size 18 7
18、.4 Qualification of valves by pressure rating18 7.5 Special marking.18 Bibliography20 Foreword 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 publicatio
19、n 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 n
20、ot be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10497:2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgar
21、ia, 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. Endorsement notice T
22、he text of ISO 10497:2010 has been approved by CEN as a EN ISO 10497:2010 without any modification. This document (EN ISO 10497:2010) has been prepared by Technical Committee ISO/TC 153 “Valves” in EN ISO 10497:2010 (E) DIN EN ISO 10497:2010-06 3 Introduction This International Standard covers the r
23、equirements 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 requi
24、red 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 30
25、0, 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
26、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 th
27、ese 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 can be injurious to health, if adequate precautions are not taken. This International Standard refer
28、s only to technical suitability and does not absolve the user from legal obligations relating to health and safety at any stage of the procedure. EN ISO 10497:2010 (E) DIN EN ISO 10497:2010-06 4 1 Scope This International Standard specifies fire type-testing requirements and a fire type-test method
29、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 type
30、s 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 accor
31、ding 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 ind
32、ispensable 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 threads Part 1: Dimension
33、s, 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 used for reference purp
34、oses, 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 pre
35、ssure 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. EN ISO 10497:2
36、010 (E) DIN EN ISO 10497:2010-06 5 NOTE 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:, Clause 2.1. 3.3 NPS alphanumeric designat
37、ion 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 The number following the letters NPS does
38、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
39、 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 valv
40、e 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 plane of symmetry perpendicular to the axis
41、 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 and conditions for valves to be tested 4.
42、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 dire
43、ction 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 dir
44、ection of installation. EN ISO 10497:2010 (E) DIN EN ISO 10497:2010-06 6 4.1.4 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 without a gearbox, testing with a gearbox fitted shall qualif
45、y 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 relief provision If the valve under test incorporates a pres
46、sure 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 is such that the device vents to the downstream side of the
47、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 of valves is potentially hazardous and it is essential that
48、 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 appropri
49、ate 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 temperature in the region of the valve of 750 C to 1 000 C for a period of 30 min. The objective is to completely envelop the valve in flames to assure that the seat and sealing areas are exposed to the high burn temperature. The intensity of the heat input shall be monitored using thermocouples and calorimeter cubes as specified in 5.6.7 and 5.6.8. During this period the in
