SIST EN 13648-1:2009
Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service
Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service
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 shall be 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.
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
- TLP - Pressure vessels
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 05-Dec-2008
- Due Date
- 09-Feb-2009
- Completion Date
- 05-Dec-2008
Relations
- Effective Date
- 01-Dec-2008
Overview - EN 13648-1:2008 (Cryogenic vessels - Safety valves for cryogenic service)
EN 13648-1:2008 is the CEN European Standard that specifies requirements for the design, manufacture and testing of safety valves for cryogenic service. It applies to valves intended to operate with cryogenic fluids (as defined in EN 1252-1) at temperatures below −10 °C as well as at ambient temperature. The standard mandates compliance with EN ISO 4126‑1 or EN ISO 4126‑4 and addresses cryogenic-specific design, material and testing considerations for reliable pressure relief.
Key topics and technical requirements
- Scope and limits
- Valves for single‑phase vapours/gases; sizes limited to DN 100 for category B and DN 25 for category A (category A limited to set pressures up to 40 bar).
- All covered valves correspond to PED category IV (Directive 97/23/EC) and TPED category 3 (Directive 99/36/EC).
- Design requirements
- Suitability across specified minimum temperature up to +65 °C.
- Measures to avoid water accumulation, freezing or deposition (drainage, stem guiding).
- Special provisions for sublimating cryogens (e.g., CO2) to avoid solid deposition impairing operation.
- Materials
- Metallic materials must meet toughness requirements in EN 1252‑1 / EN 1252‑2 for the specified minimum temperatures.
- Oxygen compatibility per EN 1797 when required (e.g., oxygen service or temperatures near −190 °C).
- Limits on copper content (e.g., with acetylene mixtures) and guidance for non‑metallic parts (seats/inserts).
- Testing
- Production testing in accordance with EN ISO 4126‑1 / EN ISO 4126‑4 (hydraulic or pneumatic media).
- Type tests specific to cryogenic service (seat leakage, cryogenic performance, repeated lift/reseat cycles).
- Determination of certified derated discharge coefficient (Kdr), cleanliness and marking requirements.
Practical applications
EN 13648-1 is used to ensure safe overpressure protection of cryogenic storage and process equipment:
- Liquid and gaseous cryogenic storage tanks and transportable cryogenic vessels
- LNG/LPG facilities, industrial gas plants, research cryogenic systems
- Installations where vented fluids may freeze or sublimate on valve internals
Who uses this standard
- Pressure‑relief valve manufacturers and designers
- Cryogenic vessel manufacturers and installers
- Safety and compliance engineers, testing laboratories and notified bodies
- Procurement teams specifying valves to meet PED/TPED and CEN requirements
Related standards
- EN ISO 4126‑1 / EN ISO 4126‑4 (safety valves)
- EN 1252‑1, EN 1252‑2 (cryogenic material toughness)
- EN 1797 (gas/material compatibility)
- EN 12300 (cleanliness for cryogenic service)
- EN 13648‑3 (relief capacity, sizing)
- PED 97/23/EC and TPED 99/36/EC (regulatory context)
Keywords: EN 13648-1, cryogenic vessels, safety valves, cryogenic service, pressure relief, PED, EN ISO 4126, valve testing.
Frequently Asked Questions
SIST EN 13648-1:2009 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service". This standard covers: 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 shall be 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.
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 shall be 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.
SIST EN 13648-1:2009 is classified under the following ICS (International Classification for Standards) categories: 13.240 - Protection against excessive pressure; 23.020.40 - Cryogenic vessels. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 13648-1:2009 has the following relationships with other standards: It is inter standard links to SIST EN 13648-1:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 13648-1:2009 is associated with the following European legislation: EU Directives/Regulations: 2008/68/EC, 2014/68/EU, 94/55/EC, 96/49/EC, 96/86/EC, 96/87/EC, 97/23/EC; Standardization Mandates: M/071, M/086. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN 13648-1:2009 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
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
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
Standard and the Essential Requirements
of EC Directive 97/23/EC (PED).13 Bibliography.14
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
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
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
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SIST EN 13648-1:2009 표준은 극저온 서비스를 위한 안전 밸브의 설계, 제조 및 시험에 대한 요구사항을 명확히 규정하고 있습니다. 이 표준은 –10 °C 이하의 극저온 유체로 작동하는 시스템에서의 안전성을 확보하기 위해 필수적입니다. EN 1251-1에서 정의된 극저온 유체의 특성을 기반으로 하여, 안전 밸브는 EN ISO 4126-1 또는 EN ISO 4126-4의 요건을 준수해야 하며, 다양한 조건에 맞추어 설계될 수 있습니다. 이 표준의 주요 강점 중 하나는 특정 카테고리(DN 100 이하의 B 카테고리 및 DN 25 이하의 A 카테고리)에 대한 제한을 두고 있어, 안전 밸브의 적용 범위를 명확히 하고 있다는 점입니다. A 카테고리의 경우 최대 설정 압력이 40바로 제한되어 있으며, 단일 상 기체 또는 증기 배출을 위해 설계되어 있습니다. 이는 밸브의 신뢰성을 높이고, 다양한 가스 또는 가스 혼합물에 대해 적합성을 확보할 수 있도록 하고 있습니다. 또한, 이 표준은 PED(지침 97/23/EC)의 IV 카테고리 및 TPED(지침 99/36/EC)의 3 카테고리에 해당하는 모든 안전 밸브를 포함하고 있어, 유럽 내에서 극저온 서비스를 위한 안전 장치의 법적 요건을 충족할 수 있습니다. 이는 산업계에서의 안전성을 한층 높이는 중요한 요소라 할 수 있습니다. SIST EN 13648-1:2009 표준은 극저온 환경에서의 안전 밸브의 필요성을 명확하게 제시하며, 이에 따른 설계 및 운영 기준을 제공하여 관련 분야의 전문가들에게 실질적인 지침을 제시하고 있습니다. 이러한 특성 덕분에 이 표준은 극저온 유체를 취급하는 산업에 있어 필수적인 기준으로 자리잡고 있습니다.
SIST EN 13648-1:2009は、低温流体（EN 1251-1で定義された）を使用する際の安全弁に関するヨーロッパ標準であり、その設計、製造、試験に関する要件を明確に規定しています。この標準は、-10°C以下の温度での運用を対象とし、環境温度での運用も含まれています。 この標準の強みは、各安全弁がEN ISO 4126 1またはEN ISO 4126-4に準拠することを求める点にあります。また、設計された弁は、単相の蒸気またはガスを排出するために特化されており、特定の気体またはガス混合物に対しても適用可能であることが特徴です。この柔軟性により、様々な産業用途において標準が広く適用されることが期待されます。 さらに、この標準はDN 100を超えないバルブを対象としており、カテゴリBのバルブは特に重要な規定を受けます。カテゴリAのバルブはDN 25および最大40バールの設定圧力に制限されており、これにより設計のシンプルさと効果的な運用が確保されています。このような明確な仕様は、関係者にとっての指針となり得る重要な要素です。 また、SIST EN 13648-1:2009は、PED（97/23/EC指令）およびTPED（99/36/EC指令）のカテゴリIVおよびカテゴリ3に該当する安全弁に適用される点でも重要性を持ちます。これにより、安全弁に求められる厳しい基準が確立されていることが保証されます。 ただし、注意点として、特定の低温容器用の逃がし弁の容量を特定する方法については、この標準では提供されておらず、EN 13648 3で詳述されています。この点は、利用者が他の文書に目を通す必要があることを示唆しています。 総じて、SIST EN 13648-1:2009は、低温サービス用の安全弁に特化した基準として、その設計、試験、および製造に関する包括的で明確なガイドラインを提供しており、関連する業界において非常に重要な役割を果たしています。
The SIST EN 13648-1:2009 standard provides comprehensive specifications for safety valves intended for use with cryogenic fluids, establishing vital guidelines for their design, manufacture, and testing. This standard's scope is particularly relevant as it delineates the operational parameters for valves operating at temperatures below -10 °C, ensuring safety during the handling of cryogenic vessels. One of the significant strengths of this standard is its clear alignment with existing international standards such as EN ISO 4126-1 and EN ISO 4126-4. By mandating compliance with these standards, SIST EN 13648-1:2009 reinforces the reliability and safety of safety valves for cryogenic service, providing a critical layer of assurance for manufacturers and users alike. Additionally, the standard classifies safety valves into two categories based on size and pressure, with specific limitations that ensure appropriate application within the scope of cryogenic service. For instance, category B valves are limited to a size of DN 100, while category A valves are restricted to DN 25 and pressures up to 40 bars. This categorization simplifies selection and application, as users can easily identify the appropriate type of valve based on their operational needs. The emphasis on valves designed to relieve single-phase vapors or gases aligns with industry practices and expectations for cryogenic systems, enhancing the standard’s relevance in real-world applications. Furthermore, the flexibility noted in allowing valves to be constructed for multiple gases or gas mixtures grants additional versatility, which is a practical advantage in diverse operational contexts. However, the standard notably refrains from detailing methods for determining the flow capacity of relief valves, directing users to EN 13648-3 for such methodologies. While this could necessitate consulting additional documents, it also indicates a well-structured approach, promoting collaboration between different standards to ensure comprehensive coverage of safety requirements. Overall, SIST EN 13648-1:2009 stands out as a robust framework for ensuring safety in cryogenic service applications, highlighting its strengths in defined operational parameters, alignment with existing standards, and adaptable valve specifications. Its focus on providing precise guidelines for safety valves enhances both safety and performance in the handling of cryogenic fluids.
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