Natural gas vehicles - Fuelling and operation - Natural gas fuelling stations - LNG unloading stop system

This document specifies the minimum requirements for the unloading stop system of the unloading of LNG from an LNG road tanker to the LNG fuelling station. This document consists of two main topics:
-   functional description of the unloading stop system;
-   technical layout description of the unloading stop system.

Gasfahrzeuge - Betankung und Betrieb - Gasfüllanlagen - LNG Entlade-Stopp-System

Dieses Dokument legt die Mindestanforderungen an das Entlade-Stopp-System für das Entladen von LNG von einem LNG-Straßentankwagen zur LNG-Füllanlage fest. Dieses Dokument besteht aus zwei Hauptthemen:
-   Funktionsbeschreibung des Entlade-Stopp-Systems;
-   Beschreibung der technischen Gestaltung des Entlade-Stopp-Systems.

Véhicules au gaz naturel - Remplissage et utilisation - Stations-service de gaz naturel - Système d'arrêt de déchargement de GNL

Le présent document spécifie les exigences minimales relatives au système d'arrêt de déchargement de GNL depuis un camion-citerne GNL vers une station-service GNL. Le présent document comprend deux sujets principaux :
-   description fonctionnelle du système d'arrêt de déchargement ;
-   description de la disposition technique du système d'arrêt de déchargement.

Vozila na zemeljski plin - Polnjenje in delovanje - Polnilne postaje za oskrbo z utekočinjenim zemeljskim plinom - Sistem za zaustavitev raztovarjanja v sili

General Information

Status
Not Published
Public Enquiry End Date
02-Feb-2023
Technical Committee
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
16-Nov-2022
Due Date
05-Apr-2023
Completion Date
03-Mar-2023

Buy Standard

Draft
prEN 17922:2023 - BARVE
English language
12 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 17922:2023
01-januar-2023
Vozila na zemeljski plin - Polnjenje in delovanje - Polnilne postaje za oskrbo z
utekočinjenim zemeljskim plinom - Sistem za zaustavitev raztovarjanja v sili
Natural gas vehicles - Fuelling and operation - Natural gas fuelling stations - LNG
unloading stop system
Gasfüllanlagen - Notabschaltsysteme bei der Entladung von LNG
Ta slovenski standard je istoveten z: prEN 17922
ICS:
43.040.01 Sistemi za cestna vozila na Road vehicle systems in
splošno general
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
oSIST prEN 17922:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 17922:2023

---------------------- Page: 2 ----------------------
oSIST prEN 17922:2023


DRAFT
EUROPEAN STANDARD
prEN 17922
NORME EUROPÉENNE

EUROPÄISCHE NORM

December 2022
ICS 75.200
English Version

Natural gas vehicles - Fuelling and operation - Natural gas
fuelling stations - LNG unloading stop system
 Gasfüllanlagen - Notabschaltsysteme bei der Entladung
von LNG
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 326.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17922:2022 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 17922:2023
prEN 17922:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Functional requirements . 6
4.1 General requirement . 6
4.2 Functional description of the unloading stop system. 6
4.3 Alarms and actions for unloading stop system . 7
4.3.1 Manual triggers for unloading stop . 7
4.3.2 Automatic triggers for unloading stop . 7
5 Design of the unloading stop system . 9
5.1 General. 9
5.2 Activation time . 9
5.3 Air pressure alarm . 9
6 Technical description of unloading stop system . 9
6.1 Pneumatic system . 9
6.1.1 General. 9
6.1.2 Pressure rating . 9
6.2 Pneumatic system connector. 9
6.2.1 Technical drawing . 9
6.2.2 Profile of the pneumatic connector . 9
7 Operation of unloading stop system . 10
7.1 Testing of the pneumatic link . 10
7.2 Resume operation after ESD action . 10
7.3 Training of operator/driver of the LNG transfer . 11
Bibliography . 12
2

---------------------- Page: 4 ----------------------
oSIST prEN 17922:2023
prEN 17922:2022 (E)
European foreword
This document (prEN 17922:2022) has been prepared by Technical Committee CEN/TC 326 “Natural gas
vehicles - Fuelling and operation”, the secretariat of which is held by TSE.
This document is currently submitted to the CEN Enquiry.

3

---------------------- Page: 5 ----------------------
oSIST prEN 17922:2023
prEN 17922:2022 (E)
Introduction
The transport of LNG over the road in Europe is organized through ADR regulations. This European
Agreement concerning the International Carriage of Dangerous Goods by Road specifies the safety
procedures of the road tanker and driver.
The design, construction, operation, maintenance and inspection including equipment safety and control
devices for LNG fuelling stations are described in EN ISO 16924 “Natural gas fuelling stations — LNG
stations for fuelling vehicles”.
This document describes the interface between the LNG road tanker and LNG fuelling station.
The unloading of LNG at the fuelling station shall be carried out with an unloading stop system which, in
the event of an emergency, shall safely stop the transfer process and close the necessary valves.
However, at the moment different fuelling station operators are using different safety systems, some are
using electronic safety systems, others are using pneumatic operated safety systems.
The proposed harmonized communication interface between the fuelling station and the LNG Road
Tanker is a pneumatic system. Though an electrical interface is also used but for the present it is difficult
to propose a harmonized interface connector.
The aim of this document is to describe a harmonized pneumatic operated unloading stop system in such
a way that the safety system of LNG road tanker is linking with the safety system of the LNG fuelling
station.
The proposed unloading stop system is also applicable to the unloading of LNG to industrial LNG
installations and from rail or from ship to the LNG fuelling stations.

4

---------------------- Page: 6 ----------------------
oSIST prEN 17922:2023
prEN 17922:2022 (E)
1 Scope
This document specifies the minimum requirements for the unloading stop system of the unloading of
LNG from an LNG road tanker to the LNG fuelling station. This document consists of two main topics:
— functional description of the unloading stop system;
— technical layout description of the unloading stop system.
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 amendme
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.