EN 14841:2023

SLOVENSKI STANDARD
01-september-2023
Nadomešča:
SIST EN 14841:2014
Oprema in pribor za utekočinjeni naftni plin (UNP) - Postopek polnjenja in
praznjenja železniških cistern za UNP
LPG equipment and accessories - Filling and discharge procedures for LPG rail tankers
Flüssiggas-Geräte und Ausrüstungsteile - Füll- und Entleerungsverfahren für
Eisenbahnkesselwagen für Flüssiggas (LPG)
Équipements pour GPL et leurs accessoires - Procédures de chargement et
déchargement des wagons-citernes pour GPL
Ta slovenski standard je istoveten z: EN 14841:2023
ICS:
23.020.20 Posode in vsebniki, montirani Vessels and containers
na vozila mounted on vehicles
45.060.20 Železniški vagoni Trailing stock
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14841
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 23.020.20; 45.060.20 Supersedes EN 14841:2013
English Version
LPG equipment and accessories - Filling and discharge
procedures for LPG rail tankers
Équipements pour GPL et leurs accessoires - Flüssiggas-Geräte und Ausrüstungsteile - Füll- und
Procédures de chargement et déchargement des Entleerungsverfahren für Eisenbahnkesselwagen für
wagons-citernes pour GPL Flüssiggas (LPG)
This European Standard was approved by CEN on 24 April 2023.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14841:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General operation . 5
5 Procedures. 5
5.1 General . 5
5.2 Filling . 6
5.2.1 Preparation for filling . 6
5.2.2 Filling operations . 7
5.2.3 Completion of filling . 7
5.2.4 Precautions against overfilling . 7
5.3 Discharge . 8
5.3.1 Preparation for discharge . 8
5.3.2 Discharge operations . 8
5.3.3 Completion of discharge . 9
5.3.4 Discharging by pumps . 9
5.3.5 Discharging by compressor . 9
5.4 Integrated shut down system .10
6 Emergency procedure .10
Annex A (informative) Safety recommendations .11
Bibliography .12

European foreword
This document (EN 14841:2023) has been prepared by Technical Committee CEN/TC 286 “Liquefied
petroleum gas equipment and accessories”, the secretariat of which is held by NSAI.
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 November 2023, and conflicting national standards shall
be withdrawn at the latest by November 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 14841:2013.
In comparison with the previous edition, the following technical modifications have been made:
— Removal of the Annex A on the Environmental checklist;
— Addition of a reference to CEN/TS 16765;
— A new Annex A was added giving recommendations on the personal protection equipment;
— Updating of the Introduction;
— In addition to the discharge of LPG, requirements for the filling of LPG were also added;
— The document was harmonized in both the filling and the discharge sections with EN 13776;
— A new clause on Integrate shut down systems was added.
This document will be submitted for reference in:
— the RID [4]; and/or
— the technical annexes of the ADR [5].
NOTE These regulations take precedence over any clause of this standard. It is emphasized that RID/ADR are
being revised regularly at intervals of two years which can lead to temporary non-compliances with the clauses of
this standard.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
This document calls for the use of substances and procedures that can be injurious to health if adequate
precautions are not taken. It refers only to technical suitability and does not absolve the user from legal
obligations relating to health and safety at any stage.
The frequencies of the different types of pressure vessel inspection are given by the relevant international
regulations concerning the transport of dangerous goods.
Protection of the environment is a key political issue in Europe and elsewhere. For CEN/TC 286 this is
covered in CEN/TS 16765 [1], and this Technical Specification should be read in conjunction with this
document. CEN/TS 16765 provides guidance on the environmental aspects to be considered regarding
equipment and accessories produced for the LPG industry and the following is addressed:
a) design;
b) manufacture;
c) packaging;
d) use and operation; and
e) disposal.
It is recommended that companies using this document develop an environmental management policy.
For guidance, see EN ISO 14001 [2].
It has been assumed in the drafting of this document that the execution of its provisions is entrusted to
appropriately qualified and experienced people.
All pressures are gauge pressures unless otherwise stated.
NOTE This document requires measurement of material properties, dimensions and pressures. All such
measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It can be
beneficial to refer to the leaflet “Measurement uncertainty leaflet” SP INFO 2000 27 [3].
1 Scope
This document specifies procedures for filling, discharge and handling operations as well as emergency
procedures for rail tankers used for the transport of liquefied petroleum gas (LPG).
This document does not apply to “tank containers” and “batteries of receptacles”.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
CEN/TS 16769, LPG equipment and accessories - Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in CEN/TS 16769 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 General operation
Handling operations such as:
— accepting rail tankers upon arrival;
— filling and/or discharge of LPG; and
— preparation and returning rail tanker
shall be carried out under the supervision of a competent person (e.g. operator of the site) and shall be
in accordance with the site procedures.
5 Procedures
5.1 General
Site procedures in written form including emergency procedures shall be available, understood and
followed by all persons involved in each operation. This shall be achieved by training and supervision.
The responsibilities of the persons involved shall be clearly specified.
The procedures shall include a check of the rail tanker that is to be carried out before it is accepted. This
shall include:
— the marking;
— a check of the integrity of the rail tanker;
— a check of tamper evident seals; and
— an identification check of LPG quality and grade.
In case of transfer to/from another tanker, the procedures shall also include the check of that other
tanker.
Where deficiencies are found, they shall be recorded and reported to the appropriate body (e.g. rail
tanker loader) and the rail tanker operator. A rail tanker shall not be filled and/or discharged until any
necessary remedial work has been completed.
Copies of checklists and deficiency reports shall be retained.
Personnel carrying out LPG transfer operations shall wear personal protection equipment. The
operations of filling and discharging shall be done under constant supervision.
NOTE 1 Recommendations for personal protection equipment are given in Annex A.
The filling and discharge areas shall be inspected for fire hazards prior to beginning operations. Suitable
fire protection shall be readily available.
NOTE 2 Responsibilities for fire protection are subject to national regulations.
5.2 Filling
5.2.1 Preparation for filling
5.2.1.1 The rail tanker to be filled shall be moved to the filling area and positioned in accordance with
the site procedures.
5.2.1.2 Any device provided to check the loaded quantity (e.g. by weight) shall be operational.
5.2.1.3 Parking brakes and railway wheel chock or other equivalent means shall be applied to
prevent unintended movement of any rail tanker involved during filling. The site, where the rail tankers
are parked for filling shall be isolated from other rail traffic. If fitted, anti-drive-away interlocks shall be
engaged.
5.2.1.4 The electrostatic potential of the rail tanker and the discharging pressure vessel shall then be
equalised before the LPG hoses or loading arms are connected.
5.2.1.5 All rail tanker valves shall be checked to ensure that they are in the closed position.
5.2.1.6 Blanking caps or blind flanges shall be removed from the liquid and vapour connections
(where fitted and when used) to be used.
5.2.1.7 Ensure that the site is safe for filling LPG and adequate ullage capacity is available. Specific
requirements for this shall be part of the site procedures.
5.2.1.8 Hoses and loading arms shall be checked for kinks, wea
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