EN 14382-2005 en Safety devices for gas pressure regulating stations and installations - Gas safety shut-off devices for inlet pressures up to 100 bar (Incorporates Amendment A1 20.pdf

1、BRITISH STANDARDBS EN 14382:2005Safety devices for gas pressure regulating stations and installations Gas safety shut-off devices for inlet pressures up to 100 bar ICS 23.060.40g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54

2、g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58+A1:2009 IncorporatingcorrigendumJune 2009National forewordThis British Standard is the UK implementation ofEN 14382:2005+A1:2009, incorporating corrigendum June 2009. It supersedes BS EN 14382:2005 which is withdrawn.The s

3、tart and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment 1 is indicated by !“.The start and finish of text introduced or altered by corrigendum is

4、 indicated in the text by tags. Text altered by CEN corrigendum June 2009 is indicated in the text by .The UK participation in its preparation was entrusted to Technical Committee GSE/32, Gas governors.A list of organizations represented on this committee can be obtained on request to its secretary.

5、This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 14382:2005+A1:2009This British Standard was published under the authority

6、of the Standards Policy and Strategy Committee on23 February 2006 BSI 2009Amendments/corrigenda issued since publicationDate Comments 30 June 2009 Implementation of CEN amendment A1:200931 December 2009 Implementation of CEN corrigendum June 2009ISBN 978 0 580 68225 4EUROPEAN STANDARD NORME EUROPENN

7、E EUROPISCHE NORM EN 14382:2005+A1 March 2009 ICS 23.060.40 Supersedes EN 14382:2005English 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 dtente-rgula

8、tion 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 This European Standard was approved by CEN on 30 December 2004 and includes Amendment

9、 1 approved by CEN on 12 January 2009. 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

10、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 translation under the responsibility of a CEN member into its own language

11、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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb

12、ourg, Malta, Netherlands, 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 2009 CEN All right

13、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14382:2005+A1:2009: EIncorporating corrigendum June 2009EN 14382:2005+A1:2009 (E) 2 Contents page Foreword 51 Scope 62 Normative references 73 Terms, definitions and symbols . 94 Construction requ

14、irements . 204.1 Basic requirements . 204.1.1 General 204.1.2 Types of shut-off devices . 214.1.3 End connections 224.1.4 Flange ratings 224.1.5 Nominal sizes and face-to-face dimensions . 234.1.6 Sealing of the adjusting device 264.1.7 Set range. 264.1.8 External visual Indication of the position o

15、f the closing member 264.1.9 Springs 264.1.10 Parts transmitting actuating forces . 264.1.11 !Replaceable parts that may be affected by erosion or abrasion 264.2 Materials . 264.2.1 Requirements for metallic materials 264.2.2 Requirements for elastomers (including vulcanized rubber) . 314.2.3 Requir

16、ements for non metallic materials different from those in 4.2.2 . 314.3 Strength of housings . 324.3.1 Body and its inner metallic partition walls“ 324.3.2 Flanges . 324.3.3 !Other pressure containing parts 324.3.4 Inner metallic partition walls 344.3.5 Minimum values of safety factor 344.3.6 Welded

17、 joint coefficient 355 Functional requirements . 355.1 General 355.1.1 Shutting-off and opening 355.1.2 Mounting position 355.1.3 Bypass 355.1.4 Ice formation 355.1.5 Fail-close conditions . 355.1.6 Pressure drop 355.1.7 !Surveillance and maintenance 365.2 Shell strength, external tightness and inte

18、rnal sealing . 365.2.1 Shell strength . 365.2.2 External tightness 365.2.3 Internal sealing 365.3 Accuracy group . 375.4 Response time . 375.5 Relatching difference and unlatching . 375.5.1 Relatching difference 375.5.2 Unlatching under mechanical impact 375.6 Closing force 385.7 Endurance and accel

19、erated ageing . 38BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E) 3 5.8 Strength of the trip mechanism, valve seat and closing member against the dynamic impact of flowing gas 385.9 Flow coefficient . 395.10 Final visual inspection 396 Testing 396.1 General . 396.2 Tests . 396.3 Type test . 406.4

20、 Selection of test samples . 416.5 Routine tests 416.6 Production surveillance 417 Test and verification methods . 417.1 Dimensional check and visual inspection 417.2 Materials check 417.3 Verification of the strength of pressure containing parts and inner metallic partition walls 427.3.1 Strength c

21、alculation method 427.3.2 Experimental design method . 427.4 Verification of the strength of parts transmitting actuating forces . 437.5 Shell and inner metallic partition walls strength test 437.6 Alternative shell and inner metallic walls strength test 447.7 External tightness test 447.7.1 Externa

22、l tightness test of metallic housing 447.7.2 External tightness test of chambers bounded on at least one side by a diaphragm . 457.8 Internal sealing test . 467.9 Accuracy group . 467.9.1 General conditions 467.9.2 Test at ambient temperature 467.9.3 Test at the limit temperatures 20 C or 10 C and 6

23、0 C 477.9.4 !Verification of the upper limit of the highest set range for overpressure monitoring“ 487.9.5 Determination of flow coefficient . 487.10 Response time . 507.11 Relatching difference and unlatching . 517.11.1 !Trip pressure for over-pressure monitoring“ 517.11.2 Lower trip pressure . 517

24、.12 Closing force 527.13 Endurance and accelerated ageing . 537.14 Resistance to gas of non metallic parts 537.15 Verification of the strength of the trip mechanism, valve seat and closing member against dynamic impact of flowing gas 537.16 Final visual inspection 547.16.1 After type test 547.16.2 A

25、fter routine tests and production surveillance 548 Documentation 548.1 Documentation related to type test . 548.1.1 Documentation required prior to type test . 548.1.2 Test report 558.2 Documentation for the customer . 558.2.1 Sizing equation 558.2.2 Documentation provided at the request of the cust

26、omer . 558.2.3 Documentation provided with the shut-off device . 558.3 Documentation related to production surveillance in accordance with 6.6 568.3.1 Documentation to be available for production surveillance . 568.3.2 Production surveillance report 569 Marking . 569.1 General requirements . 569.2 M

27、arking of connections for sensing, exhaust and breather lines 579.3 Identification of auxiliary devices 57BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E) 4 Annex A (informative) Ice formation . 58A.1 General 58A.2 Requirements . 58A.3 Tests 58Annex B (informative) Compliance evaluation . 59B.1 Ge

28、neral 59B.2 Introduction 59B.3 Procedure . 59B.4 Manufacturers compliance evaluation . 60B.5 Issue of the certificate of compliance . 60Annex C (informative) Pressure drop and flow coefficient . 61C.1 Calculation method for pressure drop throughout the SSD . 61C.2 Test method for the determination o

29、f the flow coefficient Cv61Annex D (informative) Alternative test method for verification of the strength of the trip mechanism, valve seat and closing member 63D.1 Test method 63D.2 Test method for the determination of the dynamic factor Cr63D.3 Test method for a series of SSDs 64Annex E (informati

30、ve) Sizing equation 66Annex F (informative) Inspection certificate 67Annex G (informative) Order specification . 69G.1 General 69G.2 Minimum specifications 69G.2.1 Details of construction 69G.2.2 Dimensions. 69G.2.3 Performance . 69G.3 Optional specifications . 70Annex H (informative) Acceptance tes

31、t 71Annex I (informative) !Seat leakage (alternative requirement)“ 72Annex J (normative) Materials . 73J.1 Steel materials for pressure containing parts and inner metallic partition walls . 73J.2 Metallic materials different from steel materials for pressure containing parts and inner metallic parti

32、tion walls 79J.3 Materials for fixtures, integral process and sensing lines, connectors and fasteners 84Annex K (informative) !Suitability of safety shut-off device for damp operating conditions . 87Annex L (informative) Glossary . 88Annex ZA (informative) Relationship between this European Standard

33、 and the Essential Requirements of EU Directive 97/23/EC 90Bibliography 92BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E) 5 Foreword This document (EN 14382:2005+A1:2009) has been prepared by Technical Committee CEN/TC 235 “Gas pressure regulators and associated safety devices for use in gas tran

34、smission 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, at the latest by September 2009, and conflicting national standards shall be withdrawn at the la

35、test 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 indicated in the text by tags ! “. This document has been prepared under a mandate given to CEN by t

36、he 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 is an integral part of this document. Safety shut-off devices dealt with in this document are sta

37、ndard 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 of Pressure Equipment Directive (PED). For standard safety shut-off devices used in pressure re

38、gulating 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 of environmental conditions where corrosion is likely to occur“. The normative Annex J of this

39、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 Table 5. !deleted text“ !Continued“ integrity of safety shut-off devices is assured by periodic fu

40、nctional 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, the national standards organizations of the following countries are bound to implement this Euro

41、pean Standard: Austria, Belgium, Bulgaria, 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 Kin

42、gdom. BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E) 6 1 Scope !This document specifies constructional, functional, testing and marking requirements, sizing and documentation of gas safety shut-off devices used in the pressure regulating stations in accordance with EN 12186 or EN 12279:“ for inl

43、et 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 sa

44、fety shut-off devices“ will hereafter be called “SSDs“ except in titles. !For standard safety shut-off devices when used in pressure regulating stations complying with EN 12186 or EN 12279, Annex ZA lists all applicable Essential Requirements except the external corrosion resistance in case of envir

45、onmental conditions where corrosion is likely to occur.“ !This document considers the following classes/types of SSDs:“ temperature classes: class 1: operating temperature range from 10 C to 60 C; class 2: operating temperature range from 20 C to 60 C; functional classes: !class A: SSDs that close w

46、hen damage to the pressure detector element occurs (applicable to overpressure SSDs only) or when external power fails and whose re-opening, after an intervention for overpressure, is possible only manually; class B: SSDs that do not close when damage to the pressure detector element occurs and whos

47、e re-opening, after an intervention for overpressure, is possible only manually; SSDs types: type IS: (integral strength type); type DS: (differential strength type).“ SSDs complying with the requirements of this document may be declared as “in conformity with EN 14382“ and bear the mark “EN 14382”.

48、 The material and functional requirements specified in this document may be applied to SSDs which use thermal energy or the effects of electrical energy to trip the operation of the closing member. For these SSDs the operational parameters are not specified in this document. This document does not apply to: SSDs ups