Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service

This European Standard is applicable to acetic acid used for treatment of water intended for human consumption. It describes the characteristics of acetic acid and specifies the requirements and the corresponding test methods for acetic acid. It gives information on its use in water treatment.

Kryo Behälter - Sicherheitseinrichtungen gegen Drucküberschreitung - Teil 1: Sicherheitsventile für den Kryo-Betrieb

Diese Europäische Norm legt die Anforderungen an die Konstruktion, Herstellung und Prüfung von Sicherheitsventilen
für den Kryo-Betrieb fest, d. h. für den Betrieb mit tiefkalten Fluiden unter −10 °C (definiert nach
EN 1252-1) in Ergänzung zum Betrieb bei Umgebungstemperatur. Diese Europäische Norm enthält die
Anforderung, dass die Ventile EN ISO 4126-1 oder EN ISO 4126-4 entsprechen. Bestehen unterschiedliche
Anforderungen, gelten die Anforderungen an den Kryo-Betrieb.
ANMERKUNG 1 Ein tiefkaltes Fluid (tiefgekühltes verflüssigtes Gas) ist ein Gas, das wegen seiner niedrigen Temperatur
teilweise flüssig ist (total verdampfte Flüssigkeiten und überkritische Fluide sind einbezogen).
Diese Europäische Norm gilt ausschließlich für Ventile der Kategorie B mit einer Nennweite von höchstens
DN 100. Ventile der Kategorie A sind auf eine Nennweite von DN 25 und Ansprechdrücke bis 40 bar
beschränkt. Beide Ventilkategorien sind für einphasige Gase oder Dämpfe ausgelegt. Ein Ventil kann so
festgelegt, konstruiert und geprüft werden, dass es für eine Anwendung mit verschiedenen Gasen und Gasgemischen
geeignet ist.
ANMERKUNG 2 Alle in dieser Europäischen Norm erfassten Sicherheitsventile entsprechen Kategorie IV der PED
(Richtlinie 97/23/EG) sowie Kategorie 3 der TPED (Richtlinie 99/36/EG).
ANMERKUNG 3 In dieser Europäischen Norm werden keine Verfahren angegeben, nach denen für einen bestimmten
Kryo-Behälter der aus einem oder mehreren Sicherheitsventil(en) austretende Ausflussmassenstrom zu ermitteln ist.
Diese Verfahren sind in EN 13648-3 festgelegt.

Récipients cryogéniques - Dispositifs de protection contre les surpressions - Partie 1: Soupapes de sureté pour service cryogénique

La présente Norme européenne spécifie les exigences relatives à la conception, à la fabrication et aux essais
des soupapes de sûreté pour service cryogénique, c'est-à-dire destinées à fonctionner avec des fluides
cryogéniques (comme défini dans l’EN 1251-1) à une température inférieure à – 10 °C ainsi qu'à température
ambiante. La présente Norme européenne établit une exigence selon laquelle les soupapes doivent être
conformes à l’EN ISO 4126-1 ou à l’EN ISO 4126-4. En cas d’exigences différentes, les exigences en matière
de service cryogénique s’appliquent.
NOTE 1 Un fluide cryogénique (gaz liquéfié réfrigéré) est un gaz partiellement liquide compte tenu de sa faible
température (y compris les liquides totalement évaporés et les fluides supercritiques).
La présente Norme européenne se limite aux soupapes de diamètre nominal inférieur ou égal à 100 pour la
catégorie B. Les soupapes de catégorie A sont limitées à un diamètre nominal de 25 et des pressions de
tarage pouvant atteindre 40 bars. Les deux catégories sont destinées à décharger des vapeurs ou des gaz en
phase unique. Une soupape peut être conçue, construite et soumise à essai afin d'être apte à être utilisée
avec plusieurs gaz ou avec des mélanges gazeux.
NOTE 2 Toutes les soupapes de sûreté concernées par la présente Norme européenne correspondent à la
catégorie IV de la PED (Directive 97/23/CE) et à la catégorie 3 de la TPED (Directive 99/36/CE).
NOTE 3 La présente Norme européenne ne fournit pas de méthode de détermination de la capacité d'une ou de
plusieurs soupapes de décharge pour un récipient cryogénique donné. De telles méthodes sont fournies dans
l’EN 13648-3.

Kriogene posode - Varnostna oprema proti prekoračitvi tlaka - 1. del: Varnostni ventili za kriogeno področje

General Information

Status
Published
Publication Date
04-Dec-2008
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Dec-2008
Due Date
09-Feb-2009
Completion Date
05-Dec-2008

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kryo Behälter - Sicherheitseinrichtungen gegen Drucküberschreitung - Teil 1: Sicherheitsventile für den Kryo-BetriebRécipients cryogéniques - Dispositifs de protection contre les surpressions - Partie 1: Soupapes de sureté pour service cryogéniqueCryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service23.020.40Proti mrazu odporne posode (kriogenske posode)Cryogenic vessels13.240Varstvo pred previsokim tlakomProtection against excessive pressureICS:Ta slovenski standard je istoveten z:EN 13648-1:2008SIST EN 13648-1:2009en,fr,de01-januar-2009SIST EN 13648-1:2009SLOVENSKI

STANDARDSIST EN 13648-1:20021DGRPHãþD
SIST EN 13648-1:2009

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13648-1November 2008ICS 23.020.40; 23.060.40Supersedes EN 13648-1:2002

English VersionCryogenic vessels - Safety devices for protection againstexcessive pressure - Part 1: Safety valves for cryogenic serviceRécipients cryogéniques - Dispositifs de protection contreles surpressions - Partie 1: Soupapes de sûreté pourservice cryogéniqueKryo-Behälter - Sicherheitseinrichtungen gegenDrucküberschreitung - Teil 1: Sicherheitsventile für denKryo-BetriebThis European Standard was approved by CEN on 5 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13648-1:2008: ESIST EN 13648-1:2009

EN 13648-1:2008 (E) 2 Contents page Foreword......................................................................................................................................................................3 1 Scope..............................................................................................................................................................4 2 Normative references....................................................................................................................................4 3 Terms and definitions...................................................................................................................................4 4 Requirements.................................................................................................................................................6 4.1 General............................................................................................................................................................6 4.2 Design.............................................................................................................................................................7 4.2.1 Design temperature.......................................................................................................................................7 4.2.2 Drainage..........................................................................................................................................................7 4.2.3 Stem guiding..................................................................................................................................................7 4.2.4 Inserts.............................................................................................................................................................7 4.2.5 Sublimating cryogens...................................................................................................................................7 4.3 Materials.........................................................................................................................................................7 4.3.1 General............................................................................................................................................................7 4.3.2 Metallic materials...........................................................................................................................................7 4.3.3 Corrosion resistance.....................................................................................................................................7 4.3.4 Oxygen compatibility....................................................................................................................................8 4.3.5 Acetylene compatibility.................................................................................................................................8 4.3.6 Non-metallic materials..................................................................................................................................8 5 Testing............................................................................................................................................................8 5.1 Production testing.........................................................................................................................................8 5.2 Type testing for cryogenic service..............................................................................................................8 5.2.1 General............................................................................................................................................................8 5.2.2 Seat leakage test............................................................................................................................................8 5.2.3 Cryogenic tests..............................................................................................................................................9 6 Determination of the certified derated coefficient of discharge (Kdr)....................................................11 7 Cleanliness...................................................................................................................................................11 8 Marking.........................................................................................................................................................12 Annex ZA (informative) Relationship between this European

Standard and the Essential Requirements

of EC Directive 97/23/EC (PED)..................................................................................................................13 Bibliography..............................................................................................................................................................14

SIST EN 13648-1:2009

EN 13648-1:2008 (E) 3 Foreword This document (EN 13648-1:2008) has been prepared by Technical Committee CEN/TC 268 “Cryogenic vessels”, the secretariat of which is held by AFNOR. 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 May 2009, and conflicting national standards shall be withdrawn at the latest by May 2009. 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 not be held responsible for identifying any or all such patent rights. This document supersedes EN 13648-1:2002. 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 EC Directive(s) 97/23/EC. For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard is composed of the following Parts: EN 13648-1, Cryogenic vessels – Safety devices for protection against excessive pressure – Part 1: Safety valves for cryogenic service; EN 13648-2, Cryogenic vessels – Safety devices for protection against excessive pressure – Part 2: Bursting disc safety devices for cryogenic service; EN 13648-3, Cryogenic vessels – Safety devices for protection against excessive pressure – Part 3: Determination of required discharge – Capacity and sizing. According to the CEN/CENELEC Internal Regulations, 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 13648-1:2009

EN 13648-1:2008 (E) 4 1 Scope This European Standard specifies the requirements for the design, manufacture and testing of safety valves for cryogenic service, that is to say for operation with cryogenic fluids (as defined in EN 1251-1) below – 10 °C in addition to operation at ambient temperature. It is a requirement of this European Standard that the valves comply with EN ISO 4126-1 or EN ISO 4126-4. In the event of different requirements, the requirements for cryogenic service are applied. NOTE 1 A cryogenic fluid (refrigerated liquefied gas) is a gas which is partially liquid because of its low temperature (including totally evaporated liquids and supercritical fluids). This European Standard is restricted to valves not exceeding a size of DN 100 for category B. The valves of category A are limited to DN 25 and set pressures up to 40 bars. Both categories are designed to relieve single phase vapours or gases. A valve can be specified, constructed and tested such that it is suitable for use with more than one gas or with mixtures of gases. NOTE 2 All safety valves covered in this European Standard correspond to category IV of PED (Directive 97/23/EC) and category 3 of TPED (Directive 99/36/EC). NOTE 3 This European Standard does not provide methods for determining the capacity of relief valve(s) for a particular cryogenic vessel. Such methods are provided in EN 13648-3. 2 Normative references The following referenced documents are indispensable 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. EN 1252-1, Cryogenic vessels – Materials – Part 1: Toughness requirements for temperatures below -80°C EN 1252-2, Cryogenic vessels – Materials – Part 2: Toughness requirements for temperatures between -80°C and -20°C EN 1797, Cryogenic vessels – Gas/material compatibility

EN 12300, Cryogenic vessels – Cleanliness for cryogenic service EN ISO 4126-1:2004, Safety devices for protection against excessive pressure – Part 1: Safety valves (ISO 4126-1:2004) EN ISO 4126-4:2004, Safety devices for protection against excessive pressure – Part 4: Pilot operated safety valves (ISO 4126-4:2004) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which is used for reference purposes and which comprises the letters DN followed by a dimensionless whole number that is indirectly related to the physical size, in millimetres, of the bore or outside diameter of the end connections [adapted from EN ISO 6708:1995] 3.2 pressure

gauge pressure that is the value which is equal to the algebraic difference between the absolute pressure and the atmospheric pressure SIST EN 13648-1:2009

EN 13648-1:2008 (E) 5 3.3 specified minimum temperature lowest temperature for which the safety valve is specified 3.4 safety valve category A safety valve which might be expected to relieve periodically during operation of the cryogenic vessel due to the absence of an alternative relieving or control device

EXAMPLE A pressure regulating vent valve designed for frequent operation. 3.5 safety valve category B safety valve which would not be expected to relieve during normal operation due to the provision of an alternative relieving or control device 3.6 cryogenic fluid gas which is partially liquid because of its low temperature NOTE

The cryogenic fluids include evaporated liquids and supercritical fluids. The refrigerated but non-toxic gases given in Table 1 and mixtures of them are referred to as cryogenic fluids. SIST EN 13648-1:2009

EN 13648-1:2008 (E) 6 Table 1: Refrigerated but non-toxic gases Item and group Identification number, name and description a 3° A Asphyxiant gases

1913 Neon, refrigerated liquid
1951 Argon, refrigerated liquid
1963 Helium, refrigerated liquid
1970 Krypton, refrigerated liquid
1977 Nitrogen , refrigerated liquid
2187 Carbon dioxide, refrigerated liquid
2591 Xenon, refrigerated liquid
3136 Trifluoromethane, refrigerated liquid
3158 Gas, refrigerated liquid, N.O.S. b 3° O Oxidizing gases
1003 Air, refrigerated liquid
1073 Oxygen, refrigerated liquid
2201 Nitrous oxide, refrigerated liquid, oxidizing
3311 Gas, refrigerated liquid, oxidizing, N.O.S b .
3° F Flammable gases
1038 Ethylene, refrigerated liquid
1961 Ethane, refrigerated liquid
1966 Hydrogen, refrigerated liquid

1972 Methane, refrigerated liquid or natural gas, refrigerated liquid, with high methane content

3138 Ethylene, acetylene and propylene mixture, refrigerated liquid, containing at least 71,5 % ethylene with not more than 22,5 % acetylene and not more than 6 % propylene

3312 Gas, refrigerated liquid, flammable, N.O.S b a

Item and group, identification number, name and description according to the United Nations. b

N.O.S. = not otherwise specified.
3.7

relieving pressure pressure used for the sizing of a safety valve which is greater than or equal to the set pressure plus overpressure

NOTE For set pressure and overpressure definitions see EN ISO 4126-1. 4 Requirements 4.1 General The valve shall satisfy all the requirements of EN ISO 4126-1 or EN ISO 4126-4 except in cases where these Standards include diverging requirements, then this European Standard shall be applied. SIST EN 13648-1:2009

EN 13648-1:2008 (E) 7 4.2 Design 4.2.1 Design temperature The valve shall be suitable for operation at all temperatu

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