Ships and marine technology - Specification for bunkering of liquefied natural gas fuelled vessels (ISO 20519:2021)

This document specifies requirements for LNG bunkering transfer systems and equipment used to
bunker LNG fuelled vessels, which are not covered by the IGC Code. This document is applicable to
vessels involved in international and domestic service regardless of size, and addresses the following
five elements:
a) hardware: liquid and vapour transfer systems;
b) operational procedures;
c) requirement for the LNG provider to provide an LNG bunker delivery note;
d) training and qualifications of personnel involved;
e) requirements for LNG facilities to meet applicable ISO standards and local codes.

Schiffe und Meerestechnik - Spezifikation für das Bunkern flüssigerdgasbetriebener Schiffe (ISO 20519:2021)

Dieses Dokument legt Anforderungen für LNG-Bunkerübergabesysteme und Ausrüstung zum Bunkern von LNG-betriebenen Wasserfahrzeugen fest, die nicht durch den IGC-Code abgedeckt sind. Dieses Dokument gilt für Wasserfahrzeuge die im internationalen als auch im nationalen Verkehr zum Einsatz kommen, unabhängig von ihrer Größe und umfasst die folgenden fünf Elemente:
a)   Hardware: Flüssigkeits- und Gas-Übergabesysteme;
b)   Betriebsweisen;
c)   Anforderung an den LNG-Bunkerlieferanten, einen LNG-Bunker-Lieferschein bereitzustellen;
d)   Schulung und Qualifikation der beteiligten Mitarbeiter;
e)   Anforderungen an LNG-Anlagen zur Einhaltung der geltenden ISO-Normen und örtlichen Vorschriften.

Navires et technologie maritime - Spécification pour le soutage des navires fonctionnant au gaz naturel liquéfié (ISO 20519:2021)

Le présent document établit les exigences applicables aux équipements et systèmes de transfert de GNL utilisés pour le soutage de navires fonctionnant au GNL, qui ne sont pas couverts par le Code IGC. Ce document peut être utilisé à la fois pour les navires participant au transport international et domestique, quelle que soit leur taille et comprend les cinq éléments suivants:
a) matériel: systèmes de transfert de liquide et de vapeur;
b) procédures opérationnelles;
c) exigence pour le fournisseur de GNL de fournir un bon de livraison de soute de GNL;
d) formation et qualifications du personnel intervenant;
e) exigence pour les installations de GNL de respecter les normes ISO et les codes locaux applicables.

Ladjarska in pristaniška tehnologija - Specifikacija za oskrbovanje plovil na utekočinjeni zemeljski plin (ISO 20519:2021)

Ta dokument določa zahteve za oskrbovanje pretakališč in opreme za utekočinjeni zemeljski plin, ki se uporabljajo za oskrbovanje plovil na utekočinjeni zemeljski plin, ki niso zajeta v kodeksu IGC. Ta dokument se uporablja za plovila, ki opravljajo mednarodne in domače prevoze, ne glede na velikost, in obravnava naslednjih
pet elementov:
a) strojna oprema: sistemi za prenos tekočin in hlapov;
b) operativni postopki;
c) zahteva, da dobavitelj utekočinjenega zemeljskega plina predloži potrdilo o dobavi za rezervoar utekočinjenega zemeljskega plina;
d) usposabljanje in kvalifikacije vključenega osebja;
e) zahteve, da objekti za utekočinjeni zemeljski plin izpolnjujejo veljavne standarde ISO in lokalne predpise.

General Information

Status
Published
Public Enquiry End Date
02-Jan-2020
Publication Date
23-Aug-2022
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
03-Aug-2022
Due Date
08-Oct-2022
Completion Date
24-Aug-2022

RELATIONS

Buy Standard

Standard
SIST EN ISO 20519:2022 - BARVE na PDF-str 43
English language
45 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day
Draft
oSIST prEN ISO 20519:2020 - BARVE na PDF-str 42,43
English language
46 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 20519:2022
01-september-2022
Nadomešča:
SIST EN ISO 20519:2017
Ladjarska in pristaniška tehnologija - Specifikacija za oskrbovanje plovil na
utekočinjeni zemeljski plin (ISO 20519:2021)

Ships and marine technology - Specification for bunkering of liquefied natural gas fuelled

vessels (ISO 20519:2021)

Schiffe und Meerestechnik - Spezifikation für das Bunkern flüssigerdgasbetriebener

Schiffe (ISO 20519:2021)

Navires et technologie maritime - Spécification pour le soutage des navires fonctionnant

au gaz naturel liquéfié (ISO 20519:2021)
Ta slovenski standard je istoveten z: EN ISO 20519:2022
ICS:
47.020.99 Drugi standardi v zvezi z Other standards related to
ladjedelništvom in shipbuilding and marine
konstrukcijami na morju structures
75.060 Zemeljski plin Natural gas
SIST EN ISO 20519:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 20519:2022
---------------------- Page: 2 ----------------------
SIST EN ISO 20519:2022
EN ISO 20519
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 47.020.99 Supersedes EN ISO 20519:2017
English Version
Ships and marine technology - Specification for bunkering
of liquefied natural gas fuelled vessels (ISO 20519:2021)

Navires et technologie maritime - Spécification pour le Schiffe und Meerestechnik - Spezifikation für das

soutage des navires fonctionnant au gaz naturel Bunkern flüssigerdgasbetriebener Schiffe (ISO

liquéfié (ISO 20519:2021) 20519:2021)
This European Standard was approved by CEN on 23 February 2022.

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, Turkey 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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20519:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 20519:2022
EN ISO 20519:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 20519:2022
EN ISO 20519:2022 (E)
European foreword

This document (EN ISO 20519:2022) has been prepared by Technical Committee ISO/TC 8 "Ships and

marine technology" in collaboration with Technical Committee CEN/TC 282 “Installation and

equipment for LNG” 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 November 2022, and conflicting national standards

shall be withdrawn at the latest by November 2022.

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 ISO 20519:2017.

Any feedback and questions on this document should be directed to the users’ national standards

body/national committee. A complete listing of these bodies can be found on the CEN website.

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,

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, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 20519:2021 has been approved by CEN as EN ISO 20519:2022 without any modification.

---------------------- Page: 5 ----------------------
SIST EN ISO 20519:2022
---------------------- Page: 6 ----------------------
SIST EN ISO 20519:2022
INTERNATIONAL ISO
STANDARD 20519
Second edition
2021-12
Ships and marine technology —
Specification for bunkering of
liquefied natural gas fuelled vessels
Navires et technologie maritime — Spécification pour le soutage des
navires fonctionnant au gaz naturel liquéfié
Reference number
ISO 20519:2021(E)
© ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on

the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below

or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction .............................................................................................................................................................................................................................. vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 2

4 Abbreviated terms ............................................................................................................................................................................................. 5

5 Transfer system design requirements ......................................................................................................................................... 5

5.1 Vessel requirements .......................................................................................................................................................................... 5

5.2 Facility requirements ....................................................................................................................................................................... 6

5.3 Bunker transfer equipment requirements .................................................................................................................... 6

5.4 Emergency shutdown and release systems .................................................................................................................. 6

5.5 Specific requirements ...................................................................................................................................................................... 8

5.5.1 System support .................................................................................................................................................................... 8

5.5.2 Hoses, corrugated metallic or composite ..................................................................................................... 8

5.5.3 Transfer arms ........................................................................................................................................................................ 9

5.5.4 Bunkering connections ................................................................................................................................................. 9

5.5.5 Dry-disconnect/connect coupling ...................................................................................................................... 9

5.5.6 Insulation flange .............................................................................................................................................................. 10

5.5.7 Fall arrest ............................................................................................................................................................................... 10

5.6 Identification of transfer equipment ............................................................................................................................... 10

5.7 Transfer system design analysis ......................................................................................................................................... 11

5.7.1 General ..................................................................................................................................................................................... 11

5.7.2 Additional items to be considered to meet the requirements of 5.4.5 ............................ 11

5.8 Maintenance ........................................................................................................................................................................................... 11

5.9 Maintenance manual ...................................................................................................................................................................... 12

6 LNG bunkering processes and procedures ...........................................................................................................................12

6.1 Mooring ...................................................................................................................................................................................................... 12

6.2 Communication in preparation for a transfer .........................................................................................................12

6.3 Risk assessments ............................................................................................................................................................................... 13

6.3.1 General .....................................................................................................................................................................................13

6.3.2 Risk assessment ............................................................................................................................................................... 14

6.3.3 Conditions considered ................................................................................................................................................ 14

6.3.4 Assessment methodology ........................................................................................................................................ 14

6.3.5 Acceptable bunkering parameters .................................................................................................................. 14

6.4 Vessel safety assessments ......................................................................................................................................................... 14

6.5 Bunkering transfer procedures ............................................................................................................................................ 15

7 Management system and quality assurance .......................................................................................................................16

7.1 Management systems .................................................................................................................................................................... 16

7.2 Management systems for transfer equipment manufacturers ................................................................. 16

8 Personnel training ..........................................................................................................................................................................................16

8.1 Vessel personnel training requirements ...................................................................................................................... 16

8.2 Additional training requirements for personnel involved in bunkering operations

on vessels .................................................................................................................................................................................................. 17

8.2.1 General ..................................................................................................................................................................................... 17

8.2.2 Personnel providing LNG from port or mobile facilities training ....................................... 17

8.3 Documentation of training ....................................................................................................................................................... 17

9 Records and documentation ................................................................................................................................................................17

Annex A (normative) LNG bunker checklists...........................................................................................................................................19

Annex B (informative) Risk assessment and controlled zones ............................................................................................28

iii
© ISO 2021 – All rights reserved
---------------------- Page: 9 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
Annex C (informative) Illustrations of a typical LNG transfer system and

functional diagrams of EDS and ERS subsystems ..........................................................................................................33

Bibliography .............................................................................................................................................................................................................................36

© ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology, in

collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC

282, Installation and Equipment for LNG, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 20519:2017), which has been technically

revised.
The main changes are as follows:

— in 5.5.5, dry connect and disconnect couplings, if used, are required to meet the applicable

requirements of ISO 21593, however, it is permitted to use, under specified conditions, couplings

manufactured before the publication of ISO 21593;

— in 6.2.2 a), if flowmeters are used to measure LNG being bunkered, the LNG provider to inform the

party receiving the LNG if the flowmeter conforms to ISO 21903.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2021 – All rights reserved
---------------------- Page: 11 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
Introduction

This document has been produced to meet an industry need identified by the International Maritime

Organization (IMO). It has been designed to support the IMO International Code of Safety for Ships

using Gases or other Low-flashpoint Fuels (IGF Code).

Due to numerous economic and environmental factors, the use of liquefied natural gas (LNG) as a

vessel’s fuel has increased. While LNG fuelled ships and vessels have been in service since the early

2000s, most of these vessels have operated within small defined areas using LNG bunkering operations

designed for that particular vessel service. The increase in LNG fuelled vessels corresponds with

an increase in the number of the regions that these vessels service. Therefore, there is a need to

standardize LNG bunkering operations internationally to a reasonable degree so that vessel operators

have the tools to select vessel fuel providers that meet set safety and fuel quality standards for LNG

bunkering operations to be conducted safely.

This document can be applied in many situations and under various regulatory regimes. Existing

regulations can cover the topics addressed in this document.
© ISO 2021 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 20519:2022
INTERNATIONAL STANDARD ISO 20519:2021(E)
Ships and marine technology — Specification for
bunkering of liquefied natural gas fuelled vessels
1 Scope

This document specifies requirements for LNG bunkering transfer systems and equipment used to

bunker LNG fuelled vessels, which are not covered by the IGC Code. This document is applicable to

vessels involved in international and domestic service regardless of size, and addresses the following

five elements:
a) hardware: liquid and vapour transfer systems;
b) operational procedures;
c) requirement for the LNG provider to provide an LNG bunker delivery note;
d) training and qualifications of personnel involved;

e) requirements for LNG facilities to meet applicable ISO standards and local codes.

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.

ISO 16904, Petroleum and natural gas industries — Design and testing of LNG marine transfer arms for

conventional onshore terminals

ASME B16.5, Pipe flanges and flanged fittings: NPS 1/2 through NPS 24 metric/inch standard

BS 4089, Specification for metallic hose assemblies for liquid petroleum gases and liquefied natural gases

EN 1474-2, Installation and equipment for liquefied natural gas — Design and testing of marine transfer

systems — Design and testing of transfer hose

EN 1474-3, Installation and equipment for liquefied natural gas — Design and testing of marine transfer

systems — Offshore transfer systems
EN 12434, Cryogenic vessels — Cryogenic flexible hoses

IEC 60079-10-1, Explosive atmospheres — Part 10-1: Classification of areas — Explosive gas atmospheres

IMO, International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code)

IMO, International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC

Code)

Oil Companies International Marine Forum, Design and Construction Specification for Marine Loading

Arms. Third edition, 1999. London, England: Oil Companies International Marine Forum

Society of International Gas Tanker and Terminal Operators (SIGTTO), ESD Arrangements & Linked Ship/

Shore Systems for Liquefied Gas Carriers [online]. First edition, 2009. Scotland, UK: Witherby Seamanship

International Ltd
© ISO 2021 – All rights reserved
---------------------- Page: 13 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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/
3.1
bunkering
operation of transferring LNG fuel to a vessel (3.24)

Note 1 to entry: For the purposes of this document, it refers to the delivery of LNG (3.12) only. This document

does not address the transfer of CNG, propane or fuels other than LNG that can be covered by the IGF Code

(see Clause 4).
3.2
bunkering terminal

fixed operation on or near shore that is not regulated as a vessel (3.24), and that can be used to provide

LNG bunkers to a receiving vessel
3.3
classification

process in which the design and condition of a vessel (3.24) is evaluated to determine its compliance

with rules and standards developed by the Classification Society (3.4) issuing the classification

3.4
Classification Society

non-governmental organization that establishes and maintains technical standards for the construction

and operation of ships and offshore structures

Note 1 to entry: They also validate that construction is according to these standards and carry out regular

surveys in service to verify compliance with the standards.
3.5
competent authority

legal authority within a member state that has jurisdiction over maritime or port activities within that

state
3.6
controlled zones

areas extending from the bunkering manifolds on the LNG receiving vessel (3.24) and the LNG supply

source during LNG bunkering operations that have restrictions in place

Note 1 to entry: These restrictions include limitation on personnel access, sources of ignition and unauthorized

activities. The controlled zones are subdivided into hazardous zones, safety zones (3.22) and the monitoring and

security areas (3.16) as defined in Annex B.
3.7
dry connection and disconnection

method that reduces LNG (3.12) or natural gas releases into the atmosphere under normal operation to

a negligible amount consistent with safety, either by equipment design or procedural practice

3.8
dry-disconnect/connect coupling
DD/CC

mechanical device used to connect the hose bunkering system to an LNG fuel manifold without

employing bolts
© ISO 2021 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
3.9
emergency release coupling
ERC
break-away coupling

coupling installed on LNG (3.12) and vapour lines, as a component of ERS, to ensure the quick physical

disconnection of the transfer system from the unit to which it is connected, designed to prevent damage

to loading/unloading equipment in the event that the transfer system’s operational envelope and/or

parameters are exceeded beyond a predetermined point
3.10
emergency release system
ERS

system that provides a safe shut down, transfer system isolation and quick release of hoses or transfer

arms (3.21) between the facility or vessel (3.24) providing the LNG (3.12), and the vessel receiving the

LNG, preventing product release at disconnection time

Note 1 to entry: The ERS consists of an emergency release coupling (ERC) (3.9) and interlocked isolating valves

that automatically close on both sides, thereby containing the LNG or vapour in the lines (dry disconnect), and, if

applicable, associated control system.
3.11
emergency shutdown system
ESD

system that safely and effectively stops the transfer of LNG (3.12) and vapour between the facility or

vessel (3.24) providing the LNG and the vessel receiving the LNG, or vice versa
3.12
liquefied natural gas
LNG
natural gas that has been cooled and condensed into liquid form

Note 1 to entry: It is characterized as a cryogenic liquid having a temperature typically around −161 °C under

normal atmospheric pressure.
3.13
lower flammable limit
LFL

concentration of flammable gas or vapour in air below which there is insufficient amount of substance

to support and propagate combustion
3.14
management system

set of procedures an organization needs to follow in order to meet its objectives

3.15
mobile facility
facility used to transfer LNG (3.12) to a vessel (3.24)
EXAMPLE Trucks, rail car or other mobile devices (including portable tanks).
3.16
monitoring and security area

area around the bunkering facility and vessel (3.24), where vessel traffic and other activities are

monitored to mitigate harmful effects
3.17
nozzle

half part of the coupling, typically mounted on the hose bunkering system of the bunker facility, that

permits dry connection and disconnection (3.7) of the LNG bunkering system to the receptacle (3.18) of

the receiving vessel (3.24) in a safe manner
© ISO 2021 – All rights reserved
---------------------- Page: 15 ----------------------
SIST EN ISO 20519:2022
ISO 20519:2021(E)
3.18
receptacle

half part of the coupling, typically mounted to the manifold flange of the receiving vessel (3.24), that

permits dry connection and disconnection (3.7) in a safe manner
3.19
recognized organization

competent organization with delegated authority on behalf of an Administration to assist in the uniform

and effective implementation of IMO Codes and Conventions
Note 1 to entry: Adapted from IMO A.739 (18).
3.20
LNG transfer system

equipment contained between the bunkering manifold flange on the facility or vessel (3.24) providing

LNG fuel and the bunkering manifold flange on the receiving LNG fuelled vessel, including but not

limited to: vessel to vessel transfer arms (3.21), LNG transfer arms (articulated rigid piping) or hoses,

emergency release system (ERS) (3.10), insulation flanges, dry-disconnect/connect couplings (DD/CC)

(3.8), and in addition the ESD ship/shore or ship/ship link used to connect the supplying and receiving

ESD systems

Note 1 to entry: Illustrations of a typical LNG transfer system and subsystems are provided in Figures C.1 to C.4.

3.21
transfer arm

articulated metal transfer system used for transferring LNG (3.12) to the vessel (3.24) being bunkered

Note 1 to entry: It can be referred to as a “loading arm” or “unloading arm”.
3.22
safety zone

area around the bunkering station where only dedicated and essential personnel and activities are

allowed during bunkering (3.1)
3.23
security zone

area established by the national or local authorities around a bunkering facility or area through which

vessel (3.24) and personnel movement is subject to regulatory restrictions
3.24
vessel

ship, barge (self-propelled or no propulsion) or boat of any size in domestic or international service

Note 1 to entry: A bunkering vessel is a vessel used to transport LNG (3.12) to a vessel using LNG as a fuel.

Note 2 to entry: A receiving vessel is a vessel that uses LNG as a fuel and does
...

SLOVENSKI STANDARD
oSIST prEN ISO 20519:2020
01-december-2020
Ladjarska in pristaniška tehnologija - Specifikacija za oskrbovanje plovil na
utekočinjeni zemeljski plin (ISO/DIS 20519:2020)

Ships and marine technology - Specification for bunkering of liquefied natural gas fuelled

vessels (ISO/DIS 20519:2020)

Schiffe und Meerestechnik - Spezifikation für das Bunkern flüssigerdgasbetriebener

Schiffe (ISO/DIS 20519:2020)

Navires et technologie maritime - Spécification pour le soutage des navires fonctionnant

au gaz naturel liquéfié (ISO/DIS 20519:2020)
Ta slovenski standard je istoveten z: prEN ISO 20519
ICS:
47.020.99 Drugi standardi v zvezi z Other standards related to
ladjedelništvom in shipbuilding and marine
konstrukcijami na morju structures
75.060 Zemeljski plin Natural gas
oSIST prEN ISO 20519:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 20519:2020
---------------------- Page: 2 ----------------------
oSIST prEN ISO 20519:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 20519
ISO/TC 8 Secretariat: SAC
Voting begins on: Voting terminates on:
2020-11-03 2021-01-26
Ships and marine technology — Specification for
bunkering of liquefied natural gas fuelled vessels

Navires et technologie maritime — Spécification pour le soutage des navires fonctionnant au gaz naturel

liquéfié
ICS: 47.020.99
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 20519:2020(E)
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. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Abbreviated terms .............................................................................................................................................................................................. 5

5 Transfer system design requirements ........................................................................................................................................... 5

5.1 Vessel requirements ........................................................................................................................................................................... 5

5.2 Facility requirements ........................................................................................................................................................................ 6

5.3 Bunker transfer equipment requirements ...................................................................................................................... 6

5.4 Emergency shutdown and release systems ................................................................................................................... 6

5.5 Specific requirements ....................................................................................................................................................................... 8

5.5.1 System support ...................................................................... ............................................................................................ 8

5.5.2 Hoses, corrugated metallic or composite ................................................................................................... 8

5.5.3 Transfer arms ..................................................................................................................................................................... 8

5.5.4 Bunkering connections ........................................................................................................................................... .... 9

5.5.5 Dry-disconnect/connect coupling .................................................................................................................... 9

5.5.6 Insulation flange ...................................................................... ......................................................................................10

5.5.7 Fall arrest.............................................................................................................................................................................10

5.6 Identification of transfer equipment .................................................................................................................................10

5.7 Transfer system design analysis ...........................................................................................................................................11

5.7.1 General...................................................................................................................................................................................11

5.7.2 Additional items to be considered to meet the requirements of 5.4.5 ...........................11

5.8 Maintenance ...........................................................................................................................................................................................11

5.9 Maintenance manual .......................................................................................................................................................................11

6 LNG bunkering processes and procedures .............................................................................................................................12

6.1 Mooring ......................................................................................................................................................................................................12

6.2 Communication in preparation for a transfer ...........................................................................................................12

6.3 Risk assessments................................................................................................................................................................................13

6.3.1 General...................................................................................................................................................................................13

6.3.2 Risk assessment ...................................................................... .......................................................................................14

6.3.3 Conditions considered .............................................................................................................................................14

6.3.4 Assessment methodology .....................................................................................................................................14

6.3.5 Acceptable bunkering parameters ................................................................................................................14

6.4 Vessel safety assessments ..........................................................................................................................................................14

6.5 Bunkering transfer procedures .............................................................................................................................................15

7 Management s ystem/quality assurance ...................................................................................................................................16

7.1 Management systems .....................................................................................................................................................................16

7.2 Management systems for transfer equipment manufacturers ...................................................................16

8 Personnel training ...........................................................................................................................................................................................16

8.1 Vessel personnel training requirements ........................................................................................................................16

8.2 Additional training requirements for personnel involved in bunkering operations

on vessels ..................................................................................................................................................................................................17

8.2.1 General...................................................................................................................................................................................17

8.2.2 Personnel providing LNG from port or mobile facilities training .......................................17

8.3 Documentation of training .........................................................................................................................................................17

9 Records and documentation .................................................................................................................................................................17

Annex A (normative) LNG bunker checklists ............................................................................................................................................19

Annex B (normative) Risk assessment and controlled zones .................................................................................................31

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)

Annex C (informative) Illustrations ....................................................................................................................................................................37

Bibliography .............................................................................................................................................................................................................................40

iv © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,

as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the

Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.

The committee responsible for this document is ISO/TC 8, Ships and marine technology.

© ISO 2020 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
Introduction

This document has been produced to meet an industry need identified by the International Maritime

Organization (IMO). This document has been designed to support the IMO International Code of Safety

for Ships using Gases or other Low-flashpoint Fuels (IGF Code).

Due to numerous economic and environmental factors, the use of liquefied natural gas (LNG) as a

vessel’s fuel has increased. While LNG fuelled ships and vessels have been in service since the early

2000’s, most of these vessels have operated within small defined areas using LNG bunkering operations

designed for that particular vessel service. The increase in LNG fuelled vessels corresponds with an

increase in the number of the regions that these vessels will service. Therefore, there is a need to

standardize LNG bunkering operations internationally to a reasonable degree so that vessel operators

will have the tools to select vessel fuel providers that meet set safety and fuel quality standards and LNG

bunkering operations will be conducted safely. This document can be used for both vessels involved in

international and domestic service regardless of size.

This document does not replace existing laws or regulations. It is flexible so that it can be applied in

many situations and under various regulatory regimes as long as the requirements of this document

are met. If, however, local regulations preclude its use and do not provide the safety specified in this

document, compliance with this document should not be claimed.
vi © ISO 2020 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 20519:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 20519:2020(E)
Ships and marine technology — Specification for
bunkering of liquefied natural gas fuelled vessels
1 Scope

This document sets requirements for LNG bunkering transfer systems and equipment used to bunker

LNG fuelled vessels, which are not covered by the IGC Code. This document includes the following five

elements:
a) hardware: liquid and vapour transfer systems;
b) operational procedures;
c) requirement for the LNG provider to provide an LNG bunker delivery note;
d) training and qualifications of personnel involved;

e) requirements for LNG facilities to meet applicable ISO standards and local codes.

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.

ISO 16904, Petroleum and natural gas industries — Design and testing of LNG marine transfer arms for

conventional onshore terminals

ASME B16.5, Pipe flanges and flanged fittings: NPS 1/2 through NPS 24 metric/inch standard

BS 4089, Specification for metallic hose assemblies for liquid petroleum gases and liquefied natural gases

EN 1474-2, Installation and equipment for liquefied natural gas — Design and testing of marine transfer

systems — Design and testing of transfer hose

EN 1474-3, Installation and equipment for liquefied natural gas — Design and testing of marine transfer

systems — Offshore transfer systems
EN 12434, Cryogenic vessels — Cryogenic flexible hoses

IEC 60079-10-1, Explosive atmospheres — Part 10-1: Classification of areas — Explosive gas atmospheres

IMO International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code)

IMO International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk

(IGC Code)

Oil Companies International Marine Forum Design and Construction Specification for Marine Loading

Arms. Third edition, 1999. London, England: Oil Companies International Marine Forum

Society of International Gas Tanker and Terminal Operators, (SIGTTO). ESD Arrangements &

Linked Ship/Shore Systems for Liquefied Gas Carriers [online]. First edition, 2009. Scotland, UK: Witherby

Seamanship International Ltd
© ISO 2020 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1
bunkering
operation of transferring LNG fuel to a vessel (3.22)

Note 1 to entry: For the purposes of this document, it refers to the delivery of LNG only. This document does not

address the transfer of CNG, propane or fuels other than LNG that may be covered by the IGF Code (see 3.2).

3.2
bunkering terminal

fixed operation on or near shore that is not regulated as a vessel (3.22) that can be used to provide LNG

bunkers to a receiving vessel
3.3
Classed
classification

process in which the design and condition of a vessel (3.22) is evaluated to determine its compliance

with rules and standards developed by the Classification Society (3.5) issuing the classification

3.4
controlled zones

areas extending from the bunkering manifolds on the LNG receiving vessel and the LNG supply source

during LNG bunkering operations that have restrictions in place

Note 1 to entry: These restrictions include limitation on personnel access, sources of ignition and unauthorized

activities. The controlled zones are subdivided into hazardous zones, safety zones and the monitoring and

security areas as defined in Annex B.
3.5
Classification Society

non-governmental organization that establishes and maintains technical standards for the construction

and operation of ships and offshore structures

Note 1 to entry: They also validate that construction is according to these standards and carry out regular

surveys in service to verify compliance with the standards.
3.6
dry-connection or disconnection

method that reduces LNG (3.10) or natural gas releases into the atmosphere under normal operation to

a negligible amount consistent with safety, either by equipment design or procedural practice

3.7
dry-disconnect/connect coupling (DD/CC)

mechanical device used to connect the hose bunkering system to LNG fuel manifold without

employing bolts
3.8
emergency release (break-away) coupling
ERC

coupling installed on LNG (3.10) and vapour lines, as a component of ERS, to ensure the quick physical

disconnection of the transfer system from the unit to which it is connected, designed to prevent damage

to loading/unloading equipment in the event that the transfer system’s operational envelope and/or

parameters are exceeded beyond a predetermined point
2 © ISO 2020 – All rights reserved
---------------------- Page: 10 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
3.9
emergency release system
ERS

system that provides a safe shut down, transfer system isolation and quick release of hoses or transfer

arms (3.19) between the facility or vessel (3.22) providing the LNG (3.10), and the vessel receiving the

LNG, preventing product release at disconnection time

Note 1 to entry: The ERS consists of an emergency release coupling (ERC) and interlocked isolating valves which

automatically close on both sides, thereby containing the LNG or vapour in the lines (dry disconnect), and, if

applicable, associated control system.
3.10
emergency shutdown system
ESD

system that safely and effectively stops the transfer of LNG (3.10) and vapour between the facility or

vessel (3.22) providing the LNG and the vessel receiving the LNG or vice versa

Note 1 to entry: The operation of this system can be referred to as an “ESD I”. Vessel ESD systems should not be

confused with other emergency shutdown systems within the terminal or on board vessels.

Note 2 to entry: An informative illustration of an ESD I and ESD II is provided in Figure C.2.

3.11
liquefied natural gas
LNG
natural gas that has been cooled and condensed into liquid form

Note 1 to entry: It is characterized as a cryogenic liquid having a temperature typically around −161 °C under

normal atmospheric pressure.
3.12
lower flammable limit
LFL

concentration of flammable gas or vapour in air below which there is insufficient amount of substance

to support and propagate combustion
3.13
management system

set of procedures an organization needs to follow in order to meet its objectives

3.14
member state authority

legal authority within a member state that has jurisdiction over maritime or port activities within

that state
3.15
mobile facility

mobile facilities are trucks, rail car or other mobile device (including portable tanks) used to transfer

LNG (3.10) to a vessel (3.22)
3.16
monitoring and security area

area around the bunkering facility and vessel (3.22) where vessel traffic and other activities are

monitored to mitigate harmful effects
3.17
nozzle

half part of the coupling, which typically is mounted on the hose bunkering system of the bunker facility

which permits quick connection and disconnection of LNG bunkering system to the receptacle of the

receiving vessel in a safe manner
© ISO 2020 – All rights reserved 3
---------------------- Page: 11 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
3.18
receptacle

half part of the coupling, which is typically mounted to the manifold flange of the receiving vessel and

which permits quick connection and disconnection in a safe manner
3.19
recognized organization

competent organization with delegated authority on behalf of an Administration to assist in the uniform

and effective implementation of IMO Codes and Conventions
Note 1 to entry: Adapted from IMO A.739 (18).
3.20
LNG transfer system

consists of all equipment contained between the bunkering manifold flange on the facility or vessel

(3.22) providing LNG fuel and the bunkering manifold flange on the receiving LNG fuelled vessel

including but not limited to; vessel to vessel transfer arms, LNG transfer arms (articulated rigid piping)

or hoses, emergency release system (ERS) (3.8), insulation flanges; dry connect/disconnect couplings

(DD/CC), and in addition the ESD ship/shore or ship/ship link used to connect the supplying and

receiving ESD systems

Note 1 to entry: An illustration of a typical LNG transfer system is provided in Figure C.1.

3.21
technical standards

standards that prescribe requirements for one or more of the following: operations, equipment design/

fabrications or testing methodology

Note 1 to entry: Auditors cannot issue a certification or approval to a company that claims compliance with a

Technical Standard unless that standard is incorporated into a recognized management system as a management

objective.
3.22
transfer arm

articulated metal transfer system used for transferring LNG (3.10) to the vessel (3.22) being bunkered

Note 1 to entry: It can be referred to as a “loading arm” or “unloading arm”.
3.23
safety zone

area around the bunkering station where only dedicated and essential personnel and activities are

allowed during bunkering (3.1)
3.24
security zone

area established by the national or local authorities around a bunkering facility or area through which

vessel (3.22) and personnel movement is subject to regulatory restrictions
3.25
vessel

includes ships, barges (self-propelled or no propulsion) or boats of any size in domestic or

international service

Note 1 to entry: A bunkering vessel is a vessel used to transport LNG to a vessel using LNG as a fuel.

Note 2 to entry: A receiving vessel is a vessel that uses LNG as a fuel and does not transport LNG as a cargo.

4 © ISO 2020 – All rights reserved
---------------------- Page: 12 ----------------------
oSIST prEN ISO 20519:2020
ISO/DIS 20519:2020(E)
4 Abbreviated terms
Term Description Explanation

IGC International Maritime The IGC Code applies to ships involved in the carriage of bulk

Code Organization’s International Code liquefied gases and prescribes the design and construction

for the Construction and standards of ships involved in such carriage and the
Equipment of Ships Carrying equipment they should carry.
Liquefied Gases in Bulk

IGF International Maritime The IGF Code applies to ships fuelled by gases or other

Code Organization’s International Code low-flashpoint fuels. The Code contains mandatory provisions

of Safety for Ships using Gases or for the arrangement, installation, control and monitoring of

other Low-flashpoint Fuels, 2017 machinery, equipment and systems using low-flashpoint fuels.

IACS International Association An organization that establishes, reviews, promotes and

of Classification Societies develops minimum technical requirements in relation to

the design, construction, maintenance and survey of ships
and other marine related facilities; and assists international
regulatory bodies and standards organizations to develop,
implement and interpret statutory regulations and industry
standards in ship design, construction and maintenance, with
a view to improving safety at sea and the prevention of marine
pollution.

IMO International Maritime A specialized agency of the United Nations whose purpose is

Organization “to provide machinery for cooperation among governments
in the field of governmental regulation and practices relating
to technical matters of all kinds affecting shipping engaged
in international trade; to encourage and facilitate the general
adoption of the highest practicable standards in matters
concerning efficiency of navigation, and prevention and
control of marine pollution from ships.”

ISM International Safety Management An IMO code that provides an international standard for the

Code safe management and operation of ships and for pollution
prevention.

STCW International Convention on This convention promotes the safety of life and property at sea

Standards of Training, Certification and the protection of the marine environment by establishing

and Watchkeeping for Seafarers in common agreement international standards of training,

certification and watchkeeping for seafarer.

SGMF Society for Gas as a Marine Fuel A non-governmental organization established to promote safe-

ty and industry best practice in the use of gas as a marine fuel.
5 Transfer system design requirements
5.1 Vessel requirements

5.1.1 In order to be compliant with this document, vessels involved shall meet the following

requirements (this applies to vessels of all sizes, in domestic or international service):

5.1.2 Bunkering vessels shall conform with this document and be approved by its Flag State, Recognized

Organization or Classification Society that complies with the applicable uniform interpretations and

requirements posted by IACS, indicating that it meets, at a minimum, the applicable requirements of the

IGC Code, this document and applicable Flag State requirements.

5.1.3 Receiving vessels shall conform with this document and be approved by its F

...

Questions, Comments and Discussion

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