BS EN 14772-2005 Flanges and their joints - Quality assurance inspection and testing of gaskets in accordance with the series of standards EN 1514 and EN 12560《法兰及其连接件 符合EN 1514和EN.pdf

1、BRITISH STANDARD BS EN 14772:2005 Flanges and their joints Quality assurance inspection and testing of gaskets in accordance with the series of standards EN 1514 and EN 12560 The European Standard EN 14772:2005 has the status of a British Standard ICS 23.040.60; 23.040.80 BS EN 14772:2005 This Briti

2、sh Standard was published under the authority of the Standards Policy and Strategy Committee on 21 February 2005 BSI 21 February 2005 ISBN 0 580 45504 1 National foreword This British Standard is the official English language version of EN 14772:2005. The UK participation in its preparation was entr

3、usted to Technical Committee PSE/2, Jointing materials and compounds, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications refe

4、rred 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 does not purport to include all the necessary provi

5、sions 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/European committee any enquiries on the interpretation,

6、 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 title page, pages 2 to 14, an inside back cover and a back cover.

7、 The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14772 February2005 ICS23.040.60;23.040.80 Englishversion FlangesandtheirjointsQualityassurancei

8、nspectionand testingofgasketsinaccordancewiththeseriesofstandardsEN 1514andEN12560 BridesetleursassemblagesContrledelassurancedela qualitetessaisdejointsconformmentauxsriede normesEN1514etEN12560 FlanscheundihreVerbindungen QualittssicherungsprfungundPrfungvonDichtungen nachdenNormenderReihenEN1514u

9、ndEN12560 ThisEuropeanStandardwasapprovedbyCENon3January2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational sta

10、ndardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heo

11、fficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingd

12、om. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN14772:2005:EEN 14772:2005 (E) 2 Contents Page Foreword

13、3 Introduction .4 1 Scope 5 2 Normative references 5 3 Definitions 6 4 Structure of this document.6 5 Quality assurance tests and inspections6 5.1 Quality assurance inspection and testing of gaskets as indicated in the relevant standard6 5.1.1 General6 5.1.2 Non-metallic flat gasket with or without

14、inserts.6 5.1.3 Spiral wound gaskets7 5.1.4 Non-metallic PTFE envelope gaskets7 5.1.5 Corrugated, flat or grooved metallic and filled metallic gaskets7 5.1.6 Metallic ring type gaskets .8 5.1.7 Covered serrated metal gaskets 8 5.1.8 Covered jacketed gaskets.9 5.1.9 Polymeric “O“ Ring Gaskets 9 5.2 Q

15、uality assurance tests that are relevant for the components of composite gaskets.9 5.2.1 General9 5.2.2 Exfoliated graphite.9 5.2.3 PTFE (All forms).10 5.2.4 Plate silicate .10 5.2.5 Millboard.10 5.2.6 Rubber bound, fibre reinforced, sheet material .10 5.2.7 Metal10 5.3 Functional testing of the gas

16、kets.10 5.3.1 General10 5.3.2 Non-metallic flat gaskets with or without inserts.11 5.3.3 Spiral wound gaskets11 5.3.4 Non-metallic PTFE envelope gaskets11 5.3.5 Corrugated, flat or grooved metallic and filled metallic gaskets11 5.3.6 Metallic ring type gaskets .11 5.3.7 Covered serrated metal gasket

17、s 11 5.3.8 Covered jacketed gaskets.11 5.3.9 Polymeric “O“ Ring Gaskets 11 6 Recommended test procedures.12 6.1 Thickness determination 12 6.2 Density/Weight per unit area determination .12 6.3 Ash content/Ignition loss determination.12 6.4 Compression and recovery determination .12 6.5 Chloride con

18、tent determination .12 6.6 Sulphur content determination 12 6.7 Comparative graphite oxidation determination12 6.8 Gas permeability determination.13 6.9 Stress retention determination.13 6.10 Hardness.13 7 Reporting 13 Bibliography 14 EN 14772:2005 (E) 3 Foreword This document (EN 14772:2005) has be

19、en prepared by Technical Committee CEN/TC 74 “Flanges and their joints“, the secretariat of which is held by DIN. 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 2005, and conflicting natio

20、nal standards shall be withdrawn at the latest by August 2005. This document includes a Bibliography. 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 Repu

21、blic, Den- mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem- bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14772:2005 (E) 4 Introduction This document provides a se

22、t of quality assurance procedures which is applicable to a wide range of gasket types encompassing most types of industrial applications. EN 14772:2005 (E) 5 1 Scope This document specifies the quality assurance procedures that are applicable to ensure that delivered gaskets comply with the relevant

23、 product standards. This document sets down procedures by which a user can have confidence that the salient features of each batch of gaskets or gasket materials delivered to him will be constant. The gasket types covered by this document are those that are within the scope of the series of standard

24、s EN 1514 and EN 12560 and are simultaneously within the scope of the series of standards EN 1591. An ex- ception is those gaskets intended solely for domestic fluids (like water, waste water .) which are based on rubber with or without reinforcement like fillers and/or inserts. 2 Normative referenc

25、es The following referenced documents are indispensable for the application of this document. For dated refer- ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1514-1:1997, Flanges and their joints Dim

26、ensions of gaskets for PN-designated flanges Part 1: Non- metallic flat gaskets with or without inserts. EN 1514-2:1997, Flanges and their joints Dimensions of gaskets for PN-designated flanges Part 2: Spiral wound gaskets for use with steel flanges. EN 1514-3:1997, Flanges and their joints Dimensio

27、ns of gaskets for PN-designated flanges Part 3: Non- metallic PTFE envelope gaskets. EN 1514-4:1997, Flanges and their joints Dimensions of gaskets for PN-designated flanges Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges. EN 1514-6:2003, Flanges a

28、nd their joints Dimensions of gaskets for PN-designated flanges Part 6: Covered serrated metal gaskets for use with steel flanges. EN 1514-7:2004, Flanges and their joints Gaskets for PN-designated flanges Part 7: Covered metal jacketed gaskets for use with steel flanges. EN 1514-8:2004, Flanges and

29、 their joints Dimensions of gaskets for PN-designated flanges Part 8: Poly- meric O-Ring gaskets for grooved flanges. EN 12560-1:2001, Flanges and their joints Gaskets for Class-designated flanges Part 1: Non-metallic flat gaskets with or without inserts. EN 12560-2:2001, Flanges and their joints Ga

30、skets for Class-designated flanges Part 2: Spiral wound gaskets for use with steel flanges. EN 12560-3:2001, Flanges and their joints Gaskets for Class-designated flanges Part 3: Non-metallic PTFE envelope gaskets. EN 12560-4:2001, Flanges and their joints Gaskets for Class-designated flanges Part 4

31、: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges. EN 12560-5:2001, Flanges and their joints Gaskets for Class-designated flanges Part 5: Metallic ring joint gaskets for use with steel flanges. EN 12560-6:2003, Flanges and their joints Gaskets for Class-de

32、signated flanges Part 6: Covered serrated metal gaskets for use with steel flanges. EN 14772:2005 (E) 6 EN 12560-7:2004, Flanges and their joints Gaskets for Class-designated flanges Part 7: Covered metal jacketed gaskets for use with steel flanges. 3 Definitions For the purposes of this document, t

33、he terms and definitions given in the series of standards EN 1514 and EN 12560 apply. 4 Structure of this document This document is in three main sections that are to be found in Clause 5. The first section deals with the quality assurance inspection and testing of gaskets to the requirements of the

34、 relevant standard in the series of standards EN 1514 and EN 12560. 5.1 lists the clauses of the relevant stan- dard(s). Beyond that some basic quality inspections are indicated where relevant. The second section indicates the quality assurance testing or inspection that is appropriate for the separ

35、ate materials which are combined without any mixing or processing other than slitting, cutting to shape or machining, to form the composite gaskets of the series of standards EN 1514 and EN 12560. 5.2 lists the properties that are important and provides the test method and/or a reference to a proven

36、 test. The third section indicates what simple functional testing can be carried out on each of the gasket types. All of the tests included have been selected for their simplicity, many also have the advantage that the test equipment required is widely available in the relevant laboratories either i

37、n the laboratories of the gasket manufacturers or in commercial test houses. 5 Quality assurance tests and inspections 5.1 Quality assurance inspection and testing of gaskets as indicated in the relevant standard 5.1.1 General In the following the relevant clauses are simply listed with a brief desc

38、ription of the feature of the gasket or gasket material that is the subject of the inspection or test. 5.1.2 Non-metallic flat gasket with or without inserts The relevant standards are EN 1514-1:1997 and EN 12560-1:2001. Clause 8.1 Thickness Clause 8.2 Diameters Clause 8.3 (EN 12560-1:2001 only) Tol

39、erances Clause 9 (EN 12560-1:2001) or 10 (EN 1514-1:1997) Marking The gaskets should be inspected for freedom from surface blemishes and other such defects that are likely to influence their functionality. The packaging of the gaskets should be sufficient to ensure that they are protected from damag

40、e during transit. EN 14772:2005 (E) 7 NOTE The current edition of the EN 1514-1:1997 does not contain tolerance information, this will be corrected when the standard is revised but meanwhile the tolerances of EN 12560-1 should be used. 5.1.3 Spiral wound gaskets The relevant standards are EN 1514-2:

41、1997 and EN 12560-2:2001. For EN 12560-2:2001: Clause 5.2 Materials Clause 6 Construction Clause 7 Gasket compression Clause 8 Gasket types Clause 9 Dimensions Clause 10.1 Marking Clause 10.2 Colour coding For EN 1514-2:1997: Clause 4.1 series Essential Features and Dimensions Clause 4.4 Gasket Type

42、s For gaskets to either series of standards: The sealing face of the gaskets shall be in good condition and be free of damage. The sealing material in the sealing element shall be free of contamination. The inner ring, where specified, shall be securely fitted in the sealing element and the sealing

43、element in to the guide ring. The degree of fit shall be as required by the relevant standard with rotation of one part relative to the others being satisfactory provide that the location of one in the other is secure where no particular guid- ance is given in the specification. The packaging of the

44、 gaskets should be sufficient to ensure that they are protected from damage during transit. 5.1.4 Non-metallic PTFE envelope gaskets The relevant standards are EN 1514-3:1997 and EN 12560-3:2001. Clause 7 Dimensions and Tolerances Clause 8 Marking The packaging of the gaskets should be sufficient to

45、 ensure that they are protected from damage during transit. NOTE The current edition of the EN 1514-3:1997 does not contain tolerance information, this will be corrected when the standard is revised but meanwhile the tolerances of EN 12560-3 should be used. 5.1.5 Corrugated, flat or grooved metallic

46、 and filled metallic gaskets The relevant standards are EN 1514-4:1997 and EN 12560-4:2001. Clause 7.1 Diameters EN 14772:2005 (E) 8 Clause 7.2 Thickness Clause 8 Marking The packaging of the gaskets should be sufficient to ensure that they are protected from damage during transit. NOTE The current

47、editions of both EN 12560-4:2001 and EN 1514-4:1997 does not contain tolerance information, this will be corrected when the standards are revised but meanwhile the tolerances of EN 12560-6 or EN 12560-7 or EN 1514-6 or EN 1514-7 should be used. 5.1.6 Metallic ring type gaskets The relevant standard

48、is EN 12560-5:2001. Clause 6.1 Dimensions Clause 6.2 Tolerances Clause 7 Surface finish Clause 8 Marking Table A.1 Hardness The gaskets shall be inspected to ensure freedom from surface defects that are likely to impair the sealing performance. The packaging of the gaskets shall be sufficient to ensure that they are protected from damage during transit and, where appropriate, the packaging shall be selected to ensure rust prevention. 5.1.7 Covered serrated metal gaskets The relevant standards