SIST EN 12561-2:2011
(Main)Railway applications - Tank wagons - Part 2: Bottom emptying devices for liquid products including vapour return
Railway applications - Tank wagons - Part 2: Bottom emptying devices for liquid products including vapour return
This European Standard specifies requirements on and characteristics of bottom emptying devices on tank wagons used for the carriage of liquid substances of RID. This European Standard specifies the most important dimensions of connection devices for the emptying of the tank. Safety functions of these devices are subject to RID requirements and not described in this document.
This European Standard is applicable to bottom vapour return devices where fitted to tank wagons.
This European standard applies to new tank wagons built after the 1st January 2010.
Bahnanwendungen - Kesselwagen - Teil 2: Untenliegende Entleereinrichtung für flüssige Stoffe einschließlich Gaspendelung
Diese Europäische Norm legt Anforderungen und Eigenschaften für untenliegende Entleereinrichtungen von Kesselwagen fest, die für den Transport von flüssigen Stoffen des RID geeignet sind. Diese Europäische Norm legt die wichtigsten Abmessungen und Anordnungen der Entleereinrichtungen des Tanks fest. Sicherheitsfunktionen dieser Einrichtungen unterliegen den Anforderungen der RID und werden in diesem Dokument nicht beschrieben.
Diese Europäische Norm gilt für untenliegende Gaspendeleinrichtungen, die an Kesselwagen angebracht sind.
Diese Norm gilt für neue Kesselwagen, die nach dem 1. Januar 2010 gebaut werden.
Applications ferroviaires - Wagons citernes - Partie 2 : Dispositifs de vidange par le bas pour produits liquides, y compris la récupération de vapeur
La présente Norme Européenne précise les exigences et les caractéristiques relatives aux dispositifs de vidange par le bas équipant les wagons citernes utilisés pour le transport de matières liquides du RID. Les fonctions de sécurité de ces dispositifs sont soumises aux exigences du RID et ne sont pas décrites dans le présent document. La présente Norme Européenne définit les dimensions essentielles des dispositifs de raccordement utilisés pour la vidange d'une citerne.
La présente Norme européenne s’applique aux wagons citernes équipés de dispositifs de récupération de vapeur en partie basse.
La présente Norme européenne s’applique aux nouveaux wagons citernes fabriqués après le 1er janvier 2010.
Železniške naprave - Vagoni-cisterne - 2. del: Naprave, ki so nameščene na dnu cistern in so namenjene za iztok tekočin z vračanjem hlapov
Ta evropski standard določa zahteve in značilnosti za naprave za iztok, nameščene na dnu vagonov-cistern, ki se uporabljajo za prevoz tekočih snovi RID. Ta evropski standard določa najpomembnejše mere priključnih pripomočkov za praznjenje cisterne. Za varnostne funkcije naprav veljajo zahteve RID in niso opisane v tem dokumentu. Ta evropski standard velja za naprave za vračanje hlapov, ki so nameščene na dnu vagonov-cistern. Ta evropski standard velja za nove vagone-cisterne, narejene po 1. januarju 2010.
General Information
Relations
Overview
SIST EN 12561-2:2011 is a European standard developed by CEN that sets out detailed technical requirements and specifications for bottom emptying devices on railway tank wagons used to transport liquid products. It particularly addresses the design, dimensions, and connections of these devices, including vapour return systems where applicable. This standard applies exclusively to new tank wagons built after January 1, 2010, ensuring updated safety and interoperability standards. It supports compliance with RID (Regulations concerning the International Carriage of Dangerous Goods by Rail) requirements, focusing on functionality and standardized interface dimensions rather than specific safety functions.
Key Topics
Bottom Emptying Device Requirements
- Devices must minimize product residues after unloading to improve efficiency and safety.
- Tank wagons must be equipped with a double arm outlet pipe designed specifically for efficient bottom discharge.
- Internal bottom valves, external valves, and branch pipes form key components of the discharge line.
Dimensions and Design
- Nominal diameter of bottom discharge lines must be at least 100 mm.
- External valves must be lockable and sealable to prevent accidental opening.
- Couplings and caps must conform to standardized dimensions, including threaded couplings with specified thread sizes and caps with loss-prevention devices.
- Vapour return lines require a minimum effective cross-sectional area equivalent to a 50 mm diameter pipe to safely manage pressure differentials during discharge.
Vapour Return Devices
- Vapour return lines include auto vent valves and vacuum relief devices designed to prevent tank deformation during unloading.
- Quick couplings for vapour return must feature dry closure systems and dust-proof caps.
Material and Construction Specifications
- External branch pipes should be horizontal to reduce residue and ideally constructed using seamless low-temperature steel tubes and butt-welding fittings.
- Earthing devices of stainless steel are required to ensure safe dissipation of static electricity.
Connection Interfaces
- Reserved space for connection devices is standardized to ensure interchangeability and compatibility across European rail networks.
- Flanges and threaded couplings follow ISO and EN standards, promoting harmonized connections.
Applications
SIST EN 12561-2:2011 primarily applies to railway tank wagons transporting liquid hazardous substances governed by RID, including chemicals and petroleum products. The standard benefits:
- Tank Wagon Manufacturers by providing clear design and dimensional specifications to ensure compliance and interoperability.
- Rail Operators and Freight Companies by guaranteeing safety and efficiency during loading, transport, and unloading.
- Safety Inspectors and Regulators by defining measurable standards for equipment inspection and approval.
Its adoption improves the reliability of bottom discharge operations and integrates vapour return functions, which are essential for environmental protection and operational safety in the carriage of volatile liquids.
Related Standards
- EN 12561-1:2011 – Identification plates for tank wagons carrying dangerous goods.
- EN 12561-3:2011 – Bottom filling and emptying devices for gases liquefied under pressure.
- EN 12561-4:2011 – Devices for top filling and emptying of liquid products.
- EN 12561-5:2011 – Devices for vapour return during filling or emptying of liquid products.
- EN 12561-6 to EN 12561-8 – Cover manholes, platforms and ladders, heating connections for tank wagons.
- EN 13315 – Gravity discharge coupler for tank wagons transporting petroleum products.
- RID Regulations – Safety requirements on transport of dangerous goods by rail.
- ISO 4200 – Specifications for plain end steel tubes applicable for construction of branch pipes.
- ISO 7005-1 – Metallic flanges for steel construction applications.
By aligning with SIST EN 12561-2:2011 and related standards, stakeholders ensure seamless integration of bottom emptying and vapour return devices in rail tank wagon systems, enhancing safety, compatibility, and operational efficiency across European freight networks.
Keywords: EN 12561-2, tank wagons, bottom emptying devices, railway applications, vapour return, liquid products, RID compliance, tank wagon standards, railway safety devices, tank wagon connection dimensions, liquid hazardous goods transport, railway freight safety standards
Frequently Asked Questions
SIST EN 12561-2:2011 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Railway applications - Tank wagons - Part 2: Bottom emptying devices for liquid products including vapour return". This standard covers: This European Standard specifies requirements on and characteristics of bottom emptying devices on tank wagons used for the carriage of liquid substances of RID. This European Standard specifies the most important dimensions of connection devices for the emptying of the tank. Safety functions of these devices are subject to RID requirements and not described in this document. This European Standard is applicable to bottom vapour return devices where fitted to tank wagons. This European standard applies to new tank wagons built after the 1st January 2010.
This European Standard specifies requirements on and characteristics of bottom emptying devices on tank wagons used for the carriage of liquid substances of RID. This European Standard specifies the most important dimensions of connection devices for the emptying of the tank. Safety functions of these devices are subject to RID requirements and not described in this document. This European Standard is applicable to bottom vapour return devices where fitted to tank wagons. This European standard applies to new tank wagons built after the 1st January 2010.
SIST EN 12561-2:2011 is classified under the following ICS (International Classification for Standards) categories: 13.300 - Protection against dangerous goods; 45.060.20 - Trailing stock. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 12561-2:2011 has the following relationships with other standards: It is inter standard links to SIST EN 12561-2:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 12561-2:2011 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.Bahnanwendungen - Kesselwagen - Teil 2: Untenliegende Entleereinrichtung für flüssige Stoffe einschließlich GaspendelungApplications ferroviaires - Wagons citernes - Partie 2 : Dispositifs de vidange par le bas pour produits liquides, y compris la récupération de vapeurRailway applications - Tank wagons - Part 2: Bottom emptying devices for liquid products including vapour return45.060.20Železniški vagoniTrailing stock13.300Varstvo pred nevarnimi izdelkiProtection against dangerous goodsICS:Ta slovenski standard je istoveten z:EN 12561-2:2011SIST EN 12561-2:2011en,fr,de01-oktober-2011SIST EN 12561-2:2011SLOVENSKI
STANDARDSIST EN 12561-2:20041DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12561-2
June 2011 ICS 13.300; 45.060.20 Supersedes EN 12561-2:2002English Version
Railway applications - Tank wagons - Part 2: Bottom emptying devices for liquid products including vapour return
Applications ferroviaires - Wagons citernes - Partie 2 : Dispositifs de vidange par le bas pour produits liquides, y compris la récupération de vapeur
Bahnanwendungen - Kesselwagen - Teil 2: Untenliegende Entleereinrichtung für flüssige Stoffe einschließlich Gaspendelung This European Standard was approved by CEN on 3 June 2011.
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 national standards may be obtained on application to the CEN-CENELEC 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 and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12561-2:2011: ESIST EN 12561-2:2011
Quick couplings for vapour return . 11Bibliography . 12 Figures Figure 1 — General arrangement of bottom discharge line .6Figure 2 — Example of vapour line arrangement .7Figure 3 — Reserved spaces for connection devices .8Figure 4 — Coupling dimensions .9Figure 5 — Cap dimensions . 10Figure A.1 — Dimensions of vapour return coupling . 11 Table Table 1 — Thread dimensions .9 SIST EN 12561-2:2011
EN ISO 228-1, Pipe threads where pressure-tight joints are not made on t
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