DIN EN 14382-2009 Safety devices for gas pressure regulating stations and installations - Gas safety shut-off devices for inlet pressures up to 100 bar (includes Amendment A1 2009+.pdf

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1、July 2009DEUTSCHE NORM English price group 29No part of this standard 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 23.060.40!$Xu(“1538205www

2、.din.deDDIN EN 14382Safety devices for gas pressure regulating stations and installations Amendment A1:2009+Corrigendum AC:2009)English version of DIN EN 14382:2009-07Sicherheitseinrichtungen fr Gas-Druckregelanlagen und -einrichtungen A1:2009+Berichtigung AC:2009)Englische Fassung DIN EN 14382:2009

3、-07SupersedesDIN EN 14382:2005-07www.beuth.deGas safety shut-off devices for inlet pressures up to 100 bar (includesGas-Sicherheitsabsperreinrichtungen fr Eingangsdrcke bis 100 bar (enthlt nderungDocument comprises 94 pagesDIN EN 14382:2009-07 2 Start of validity This standard takes effect on 1 July

4、 2009. DIN EN 14382:2005-07 may be used in parallel until 28 December 2009. National foreword This standard has been prepared by Technical Committee CEN/TC 235 “Gas pressure regulators and associated safety devices for use in gas transmission and distribution” (Secretariat: UNI, Italy). The responsi

5、ble German body involved in its preparation was the Normenausschuss Gastechnik (Gas Technology Standards Committee). The technical content of this standard has largely been brought into line with DIN EN 334, with the main specifications with regard to the body, connections etc. now being the same in

6、 both standards. This standard is harmonized in all key points with the essential requirements of the Pressure Equipment Directive, with the exception of the external resistance to environmental conditions where corrosion occurs. When operating safety shut-off devices dealt with in this standard in

7、gas pressure regulating stations conforming to Codes of practice for gas issued by the DVGW Deutscher Verein des Gas- und Wasserfaches e.V. (German Technical and Scientific Association for Gas and Water), the specifications of DVGW Arbeitsblatt (Code of practice) G 491 shall be taken into account. T

8、o calculate the pressure drop, equation (5) from DIN EN 334:2005+A1:2009 may be used as an alternative to the equation given in subclause 7.9.5 (also for regulators with integrated SSDs, see subclause 5.1.6). This standard will also be included in the body of regulatory documents on gas of the DVGW.

9、 It should be noted that “gas safety shut-off devices” are referred to in this standard as “SSDs”, except in titles. Amendments This standard differs from DIN EN 14382:2005-07 as follows: a) The standard now includes harmonized specifications for safety shut-off devices with varying strength ranges.

10、 b) Additional SSD types with pressure regulator and safety device have been included. c) SSDs incorporated into pressure-regulating devices used in service lines have been explicitly excluded from the scope of this standard. d) Clause 3 “Terms, definitions and symbols” has been revised. e) An infor

11、mative Annex L giving a glossary of the most important terms in German, English and French has been included. f) Corrigendum EN 14382:2005+A1/AC:2009 has been incorporated. Previous editions DIN EN 3380-3: 1959-03 DIN EN 3381: 1984-06 DIN EN 14382: 2003-06, 2005-07 EUROPEAN STANDARD NORME EUROPENNE

12、EUROPISCHE NORM EN 14382:2005+A1 March 2009 +AC June 2009 ICS 23.060.40 Supersedes EN 14382:2005 English Version Safety devices for gas pressure regulating stations and installations Gas safety shut-off devices for inlet pressures up to 100 bar Dispositifs de scurit pour postes et installations de d

13、tente-rgulation de pression de gaz Clapets de scurit pour pressions amont jusqu 100 bar Sicherheitseinrichtungen fr Gas-Druckregelanlagen und -einrichtungen Gas-Sicherheitsabsperreinrichtungen fr Eingangsdrcke bis 100 bar EN 14382:2005 was approved by CEN on 2004-12-30, Amendment A1:2009 on 2009-01-

14、12 and Corrigendum AC:2009 on 2009-06-10. 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 su

15、ch national standards may be obtained on application to the Management Centre or to any CEN member. The European Standards exist 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 an

16、d notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou

17、rg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All righ

18、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14382:2005+A1:2009+AC:2009: EDIN EN 14382:2009-07 EN 14382:2005+A1:2009+AC:2009 (E) 2 Contents Page Foreword5 1 Scope 6 2 Normative references7 3 Terms, definitions and symbols.9 3.1 !General ter

19、ms and definition of type of safety devices“9 3.2 !Terms and definition of components of safety devices“.10 3.3 !Terms, symbols and definitions related to the functional performance“.15 3.4 !Terms, symbols and definitions related to the design and tests“.18 4 Construction requirements.20 4.1 Basic r

20、equirements .20 4.1.1 General20 4.1.2 Types of shut-off devices .21 4.1.3 End connections22 4.1.4 Flange ratings 22 4.1.5 Nominal sizes and face-to-face dimensions.23 4.1.6 Sealing of the adjusting device26 4.1.7 Set range.26 4.1.8 External visual Indication of the position of the closing member26 4

21、.1.9 Springs26 4.1.10 Parts transmitting actuating forces .26 4.1.11 !Replaceable parts that can be affected by erosion or abrasion26 4.2 Materials .26 4.2.1 Requirements for metallic materials26 4.2.2 Requirements for elastomers (including vulcanized rubber) .31 4.2.3 Requirements for non metallic

22、materials different from those in 4.2.2 .31 4.3 Strength of housings.32 4.3.1 !Body and its inner metallic partition walls“.32 4.3.2 Flanges .32 4.3.3 !Other pressure containing parts 32 4.3.4 Integral strength safety shut-off devices 33 4.3.5 Differential strength safety shut-off devices 34 4.3.6 I

23、nner metallic partition walls 34 4.3.7 Minimum values of safety factor 34 4.3.8 Welded joint coefficient 35 5 Functional requirements.35 5.1 General35 5.1.1 Shutting-off and opening35 5.1.2 Mounting position35 5.1.3 Bypass 35 5.1.4 Ice formation 35 5.1.5 Fail-close conditions.35 5.1.6 Pressure drop

24、35 5.1.7 !Surveillance and maintenance36 5.2 Shell strength, external tightness and internal sealing.36 5.2.1 Shell strength.36 5.2.2 External tightness36 5.2.3 Internal sealing 36 5.3 Accuracy group .37 5.4 Response time .37 5.5 Relatching difference and unlatching .37 5.5.1 Relatching difference 3

25、7 5.5.2 Unlatching under mechanical impact37 DIN EN 14382:2009-07 EN 14382:2005+A1:2009+AC:2009 (E) 3 5.6 Closing force38 5.7 Endurance and accelerated ageing.38 5.8 Strength of the trip mechanism, valve seat and closing member against the dynamic impact of flowing gas38 5.9 Flow coefficient .39 5.1

26、0 Final visual inspection39 6 Testing39 6.1 General .39 6.2 Tests .39 6.3 Type test.40 6.4 Selection of test samples .41 6.5 Routine tests41 6.6 Production surveillance41 7 Test and verification methods .41 7.1 Dimensional check and visual inspection 41 7.2 Materials check41 7.3 Verification of the

27、strength of pressure containing parts and inner metallic partition walls.42 7.3.1 Strength calculation method42 7.3.2 Experimental design method .42 7.4 Verification of the strength of parts transmitting actuating forces .43 7.5 Shell and inner metallic partition walls strength test43 7.6 Alternativ

28、e shell and inner metallic walls strength test 44 7.7 External tightness test44 7.7.1 External tightness test of metallic housing44 7.7.2 External tightness test of chambers bounded on at least one side by a diaphragm.45 7.8 Internal sealing test.46 7.9 Accuracy group .46 7.9.1 General conditions46

29、7.9.2 Test at ambient temperature 46 7.9.3 Test at the limit temperatures 20 C or 10 C and 60 C47 7.9.4 !Verification of the upper limit of the highest set range for overpressure monitoring“48 7.9.5 Determination of flow coefficient.48 7.10 Response time.50 7.11 Relatching difference and unlatching

30、.51 7.11.1 !Trip pressure for over-pressure monitoring“51 7.11.2 Lower trip pressure.51 7.12 Closing force52 7.13 Endurance and accelerated ageing.53 7.14 Resistance to gas of non metallic parts53 7.15 Verification of the strength of the trip mechanism, valve seat and closing member against dynamic

31、impact of flowing gas 53 7.16 Final visual inspection54 7.16.1 After type test 54 7.16.2 After routine tests and production surveillance 54 8 Documentation 54 8.1 Documentation related to type test .54 8.1.1 Documentation required prior to type test .54 8.1.2 Test report55 8.2 Documentation for the

32、customer.55 8.2.1 Sizing equation55 8.2.2 Documentation provided at the request of the customer .55 8.2.3 Documentation provided with the shut-off device.55 8.3 Documentation related to production surveillance in accordance with 6.656 8.3.1 Documentation to be available for production surveillance.5

33、6 8.3.2 Production surveillance report 56 DIN EN 14382:2009-07 EN 14382:2005+A1:2009+AC:2009 (E) 4 9 Marking .56 9.1 General requirements56 9.2 Marking of connections for sensing, exhaust and breather lines57 9.3 Identification of auxiliary devices 57 Annex A (informative) Ice formation .58 A.1 Gene

34、ral58 A.2 Requirements.58 A.3 Tests58 Annex B (informative) Compliance evaluation.59 B.1 General59 B.2 Introduction59 B.3 Procedure .59 B.4 Manufacturers compliance evaluation .60 B.5 Issue of the certificate of compliance .60 Annex C (informative) Pressure drop and flow coefficient.61 C.1 Calculati

35、on method for pressure drop throughout the SSD.61 C.2 Test method for the determination of the flow coefficient Cv61 Annex D (informative) Alternative test method for verification of the strength of the trip mechanism, valve seat and closing member63 D.1 Test method63 D.2 Test method for the determi

36、nation of the dynamic factor Cr63 D.3 Test method for a series of SSDs 64 Annex E (informative) Sizing equation66 Annex F (informative) Inspection certificate 67 Annex G (informative) Order specification .69 G.1 General69 G.2 Minimum specifications69 G.2.1 Details of construction69 G.2.2 Dimensions.

37、69 G.2.3 Performance.69 G.3 Optional specifications .70 Annex H (informative) Acceptance test 71 Annex I (informative) !Seat leakage (alternative requirement)“72 Annex J (normative) Materials.73 J.1 Steel materials for pressure containing parts and inner metallic partition walls.73 J.2 Metallic mate

38、rials different from steel materials for pressure containing parts and inner metallic partition walls 79 J.3 Materials for fixtures, integral process and sensing lines, connectors and fasteners84 Annex K (informative) !Suitability of safety shut-off device for damp operating conditions .87 Annex L (

39、informative) Glossary .88 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC90 Bibliography91 DIN EN 14382:2009-07 EN 14382:2005+A1:2009+AC:2009 (E) 5 Foreword This document (EN 14382:2005+A1:2009) has been prepared by Technical

40、 Committee CEN/TC 235 “Gas pressure regulators and associated safety devices for use in gas transmission and distribution”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,

41、at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. This document includes Amendment 1, approved by CEN on 2009-01-12. This document supersedes !EN 14382:2005“. The start and finish of text introduced or altered by amendment is indi

42、cated in the text by tags ! “. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC. For relationship with EU Directive 97/23/EC, see informative Annex ZA, which i

43、s an integral part of this document. Safety shut-off devices dealt with in this document are standard safety shut-off devices and, when used in pressure regulating stations complying with EN 12186 or EN 12279, they are considered as standard pressure equipment in accordance with Clause 3.1 of Art. 1

44、 of Pressure Equipment Directive (PED). For standard safety shut-off devices used in pressure regulating stations complying with EN 12186 or EN 12279, Table ZA.1 given in Annex ZA includes all applicable Essential Requirements given in Annex I of PED !except the external corrosion resistance in case

45、 of environmental conditions where corrosion is likely to occur“. The normative Annex J of this document lists some suitable materials for pressure containing parts, inner metallic partition walls, fasteners and connectors. Other materials may be used when complying with the restrictions given in Ta

46、ble 5. !deleted text“ !Continued“ integrity of safety shut-off devices is assured by periodic functional checks. For periodic functional checks it is common to refer to national regulations/standards where existing or users/manufacturers practices. According to the CEN/CENELEC Internal Regulations,

47、the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

48、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 14382:2009-07 EN 14382:2005+A1:2009+AC:2009 (E) 6 1 Scope !This document specifies constructional, functional, testing and marking requirements, sizing and documentation of gas safety shut-of

49、f devices used in the pressure regulating stations in accordance with EN 12186 or EN 12279:“ for inlet pressures up to 100 bar and nominal diameters up to DN 400; for an operating temperature range from 20 C to +60 C, which operate with fuel gases of the 1stand 2ndfamily in accordance with EN 437 in transmission and distribution networks and also in commercial and industrial installations. “Gas safety shut-off devices“ will hereafter be called “SSDs“ except in titles. !For standard safety shut-off devices when used in pressure regulating sta