EN 16668:2016+A1:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Industriearmaturen - Anforderungen und Prüfungen für Metallarmaturen als drucktragende AusrüstungsteileRobinetterie industrielle - Exigences et essais pour appareils de robinetterie métalliques utilisés comme accessoires sous pressionIndustrial valves - Requirements and testing for metallic valves as pressure accessories23.060.01Ventili na splošnoValves in generalICS:Ta slovenski standard je istoveten z:EN 16668:2016+A1:2018SIST EN 16668:2016+A1:2018en,fr,de01-maj-2018SIST EN 16668:2016+A1:2018SLOVENSKI
STANDARDSIST EN 16668:20161DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16668:2016+A1
March
t r s z ICS
t uä r x rä r s Supersedes EN
s x x x zã t r s xEnglish Version
Industrial valves æ Requirements and testing for metallic valves as pressure accessories Robinetterie industrielle æ Exigences et essais pour appareils de robinetterie métalliques utilisés comme accessoires sous pression
Industriearmaturen æ Anforderungen und Prüfungen für Metallarmaturen als drucktragende Ausrüstungsteile This European Standard was approved by CEN on
t u January
t r s x and includes Amendment
s approved by CEN on
z January
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
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Rue de la Science 23,
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t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x x x zã t r s x ªA sã t r s z ESIST EN 16668:2016+A1:2018

Classification of valves. 18 Annex B (informative)
European harmonized standards for materials and components for shell parts . 23 Annex C (informative)
European Approval of Materials (EAM) . 25 Annex D (informative)
European harmonized supporting standards for valves . 26 Annex E (informative)
Non-destructive testing of steel castings . 28 E.1 Terms and Definitions . 28 E.2 Non-destructive testing of steel castings . 28 E.2.1 General . 28 E.2.2 Testing procedures . 31 SIST EN 16668:2016+A1:2018

Non-destructive testing (NDT) of joint welding . 36 F.1 General . 36 F.2 Non-destructive testing (NDT) extent . 36 F.3 Selection of NDT-methods . 42 Annex ZA (informative)
Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered . 43 Bibliography . 45
[32]. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. !EN 19:2016", Industrial valves — Marking of metallic valves !deleted text" EN 545:2010, Ductile iron pipes, fittings, accessories and their joints for water pipelines — Requirements and test methods !EN 593:2017, Industrial valves — Metallic butterfly valves for general purposes" !EN 736-1:2017", Valves — Terminology — Part 1: Definition of types of valves !EN 764-1:2015+A1:2016, Pressure equipment — Part 1: Vocabulary EN 764-2:2012, Pressure equipment — Part 2: Quantities, symbols and units" EN 764-4:2014, Pressure equipment — Part 4: Establishment of technical delivery conditions for metallic materials EN 764-5:2014, Pressure equipment — Part 5: Inspection documentation of metallic materials and compliance with the material specification !EN 764-7:2002, Pressure equipment — Part 7: Safety systems for unfired pressure equipment" !EN 1171:2015", Industrial valves — Cast iron gate valves EN 1349:2009, Industrial process control valves EN 1515-4:2009, Flanges and their joints — Bolting — Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 97/23/EC SIST EN 16668:2016+A1:2018

This definition is based on ISO 2859-1. 3.5 material manufacturer person or organization (like founder, forge-, welding shop) which provides material to the responsible valve manufacturer 4 Category of valves !A classification under the use of DN and PS and fluid groups 1 and 2 leads to maximum category III. For respective results, see Annex A. Valves classified in Article 4 (3) of the European legislation for pressure equipment, are excluded from conformance to requirements of this standard but shall meet the “sound engineering practice” by conformity to the relevant product standard." 5 Requirements 5.1 Design 5.1.1 General Valves shall meet the design requirements of this standard and the ones referenced in Annex ZA of their relevant European harmonized standards. NOTE Annex D contains a summary of European harmonized Standard for valves. The manufacturer shall conduct a hazard analysis for the intended use and for the reasonably foreseeable conditions. It is recommended to have this hazard analysis documented. If the manufacturer identifies hazards which apply to the valve the manufacturer shall take account of his analysis by appropriate measures in order to reduce or eliminate the hazard identified. 5.1.2 Shell design strength The shell design strength shall be determined by the following: a) for steel valves designed by the tabulation method: according to EN 12516-1:2014; b) for steel valves designed by calculation: according to EN 12516-2:2014; c) for copper alloy, aluminium and cast iron valves: according to EN 12516-4:2014; d) if the shell strength resistance is validated by an experimental method: according to EN 12516-3:2002. SIST EN 16668:2016+A1:2018

Obturator strength If a pressure related hazard is identified in relation with the obturator of the valve (for example in valves used as end of line service), P 20 Test of EN 12266–2:2012 is required in addition. EN 12266–2:2012, Annex A, A.2, Test P 20 5.6 Marking Marking shall be in accordance with !EN 19:2016"and the relevant harmonized European product standards. 5.7 Surface and coating testing Protective coating or special surface treatment shall be inspected or tested in accordance with the purchaser specification. 5.8 Documentation 5.8.1 Documentation for final inspection In general the following technical documents shall be available as appropriate: — evidence of qualification of NDT personnel relevant to the equipment category; — evidence of qualification of permanent joining personnel relevant to the equipment category; — data dealing with heat treatment (e.g. diagram of temperatures); — inspection documents for base materials and welding consumables; — procedures for assuring material traceability; — NDT test reports, including radiographic films; — test reports of destructive tests (e.g. test coupons); SIST EN 16668:2016+A1:2018

Classification of valves For all valves covered by the product standards listed in Table A.1 nominal size (DN), maximum allowable pressure (PS) and the fluid group are considered as appropriate for valve classification as shown in Tables A.2 to A.5. Consequently, the maximum !deleted text" category for these valves ends up in category III even when installed in a higher categorized pressure equipment. !NOTE For valves not covered by product standards listed in Table A.1 it is the manufacturer's responsibility to consider either the volume (V) or the nominal size (DN) for the classification of the valve. In case a valve is used as safety accessory or part of, category IV can be requested." The value PS (maximum allowable pressure), for PN designated valves PS is equal to PN, is the value specified in EN 12516-1:2014 or by the manufacturer. Valves, which shall be used both for liquid and for gaseous fluids, shall be classified for gaseous fluids. Valves, which shall be used both for fluids of Fluid Group 1 and fluids of Fluid Group 2, shall be classified in Fluid Group 1. Table A.1 — Harmonized product standards Reference and title of the European harmonized product standard EN 593, Industrial valves — Metallic butterfly valves EN 1171, Industrial valves — Cast iron gate valves EN 1349, Industrial process control valves EN 1983, Industrial valves — Steel ball valves EN 1984, Industrial valves — Steel gate valves EN 12288, Industrial valves — Copper alloy gate valves !deleted text" EN 13397, Industrial valves — Diaphragm valves made of metallic materials EN 13709, Industrial valves — Steel globe and globe stop and check valves EN 13789, Industrial valves — Cast iron globe valves !deleted text" !EN 13547, Industrial valves — Copper alloy ball valves EN 16767, Industrial valves — Steel and cast iron check valves" SIST EN 16668:2016+A1:2018

Category I
Category III
Category II
! Art. 4 (3) "
Exceptionally, valves intended for unstable gasses and falling within Categories I or II shall be classified in Category III. !deleted text" SIST EN 16668:2016+A1:2018

! Art. 4 (3) "
Category I
Category II
Category III
Valves with a PN 2.5 and a DN > DN 800 shall be classified in Category I. !deleted text" SIST EN 16668:2016+A1:2018

! Art. 4 (3) "
Category I
Category II
Category III
Exceptionally, valves containing fluids at a temperature greater than 350°C and falling within Category II shall be classified in Category III. !deleted text" SIST EN 16668:2016+A1:2018

! Art. 4 (3) "
Category I
Category II
!deleted text" !deleted text"
European harmonized standards for materials and components for shell parts To give guidance and gather awareness, Table B.1 summarizes European harmonized standards for materials and components for shell parts to provide an overview to the user of this standard. The latest edition of the Official Journal of the European Union (OJEU) shall be used. The user is advised that: — standards may be deleted or added to this list, — only those issues and amendment as listed in the actual Official Journal of the European Union have the status of an European harmonized Standard, — the actual list of European harmonized Standard can be found at the European Commission's home page. SIST EN 16668:2016+A1:2018

EN 13480–8 specifies requirements for parts such as welded tubes and fittings. For further information refer to NOTE 1 in EN 13480–8:2012, 8.2.1. SIST EN 16668:2016+A1:2018

European Approval of Materials (EAM) Detailed information concerning European Approval of Materials is available from the following address: http:
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