kSIST-TS FprCEN ISO/TS 18683:2024

Guidelines for safety and risk assessment of LNG fuel bunkering operations (ISO/TS 18683:2021)

This document gives guidance on the risk-based approach to follow for the design and operation of the
LNG bunker transfer system, including the interface between the LNG bunkering supply facilities and
receiving LNG fuelled vessels.
This document provides requirements and recommendations for the development of a bunkering site
and facility and the LNG bunker transfer system, providing the minimum functional requirements
qualified by a structured risk assessment approach taking into consideration LNG properties and
behaviour, simultaneous operations and all parties involved in the operation.
This document is applicable to bunkering of both seagoing and inland trading vessels. It covers LNG
bunkering from shore or ship, mobile to ship and ship to ship LNG supply scenarios, as described in
Clause 4.

Leitlinien für die Sicherheits- und Risikobewertung beim Bunkern von LNG-Kraftstoff (ISO/TS 18683:2021)

Lignes directrices pour la sécurité et l'évaluation des risques des opérations de soutage de GNL (ISO/TS 18683:2021)

[Not translated]

General Information

• Status: Not Published
• Public Enquiry End Date: 01-Oct-2024
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: DPL - Gas supply
• Current Stage: 5520 - Unique Acceptance Procedure (UAP) (Adopted Project)
• Start Date: 07-Aug-2024
• Due Date: 25-Dec-2024
• Ref Project: FprCEN ISO/TS 18683 - Guidelines for safety and risk assessment of LNG fuel bunkering operations (ISO/TS 18683:2021)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2024
[Not translated]
Guidelines for safety and risk assessment of LNG fuel bunkering operations (ISO/TS
18683:2021)
Leitlinien für die Sicherheits- und Risikobewertung beim Bunkern von LNG-Kraftstoff
(ISO/TS 18683:2021)
Lignes directrices pour la sécurité et l'évaluation des risques des opérations de soutage
de GNL (ISO/TS 18683:2021)
Ta slovenski standard je istoveten z: FprCEN ISO/TS 18683
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL ISO/TS
SPECIFICATION 18683
Second edition
2021-11
Guidelines for safety and risk
assessment of LNG fuel bunkering
operations
Lignes directrices pour la sécurité et l'évaluation des risques des
opérations de soutage de GNL
Reference number
ISO/TS 18683:2021(E)
ISO/TS 18683:2021(E)
© 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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO/TS 18683:2021(E)
Contents Page
Foreword .iv
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 4
4 Bunkering supply scenarios .5
5 Properties and behaviour of LNG .6
5.1 General . 6
5.2 Description and hazards of LNG . 6
5.3 Potential hazardous situations associated with LNG bunker transfer . 7
5.4 Composition of LNG as a bunker fuel . 8
6 Safety . 8
6.1 Objectives . 8
6.2 General safety principles . 8
6.3 Approach . 8
7 Risk assessment . 8
7.1 General . 8
7.2 Types of risk assessment . 9
7.3 Roles and responsibilities of stakeholders . 10
7.4 Approach, scope and basis . 11
7.5 Mitigation measures . 14
7.6 Reporting . 15
7.7 Safety Zone and controlled areas . 16
7.8 Safety zone determination . 17
7.9 Determination of monitoring and security areas . 18
7.10 Simultaneous Operations (SIMOPs) . 18
8 Functional requirements for LNG bunker transfer system .19
8.1 General . 19
8.2 Functional requirements . .20
9 Training .22
Annex A (informative) Risk acceptance criteria .23
Annex B (informative) Examples of safety zone calculations .28
Bibliography .37
iii
ISO/TS 18683:2021(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 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 9, Liquefied natural
gas installations and equipment.
This second edition cancels and replaces the first edition (ISO/TS 18683:2015), which has been
technically revised.
The main changes are as follows:
— title and scope restricted to Guidelines for safety and risk assessment of LNG fuel bunkering
operations;
— list of bunkering supply scenarios updated with experience gained since 2015 in Clause 4;
— addition of concept of design stage risk assessment and operational risk assessment in 7.1;
— addition of Quantitative Consequence Assessment in 7.2;
— addition of roles and responsibilities of stakeholders in 7.3;
— design requirements removed from Clause 8 to avoid duplication with ISO 20519;
— individual Risk Criteria added in Annex A;
— three methods added to determine safety zone in Annex B;
— to avoid duplication with ISO 20519, the following clauses and annexes have been removed:
— Clause 9 Requirements to components and systems;
— Clause 11 Requirements for documentation;
— Annex C Functional requirements;
iv
ISO/TS 18683:2021(E)
— Annex D Sample Ship supplier checklist;
— Annex E Sample LNG delivery note;
— Annex F Arrangement and types of presenting connection;
— Annex G Dry disconnect coupling.
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.
v
ISO/TS 18683:2021(E)
Introduction
The properties, characteristics, and behaviour of LNG differ significantly from conventional marine
fuels, such as heavy fuel oils and distillate fuels as marine diesel oil (MDO) or marine gas oil (MGO).
For these reasons, it is essential that all LNG bunkering operations are undertaken with diligence and
due attention is paid to prevent leakage of LNG liquid or vapour and to control all sources of ignition.
Therefore, it is important that throughout the LNG bunkering chain, each element is carefully designed
and has dedicated safety and operational procedures executed by trained personnel.
It is important that the basic requirements laid down in this document are understood and applied to
each operation in order to ensure the safe, secure, and efficient transfer of LNG as a fuel to the ship.
The objective of this document is to provide guidance for the risk assessment of LNG fuel bunkering
operations and thereby ensuring that an LNG fuelled vessel and bunkering supply facilities are operating
with a high level of safety, integrity, and reliability regardless of the type of bunkering supply scenario.
The LNG bunkering interface comprises the area of LNG transfer and includes manifold, valves, safety
and security systems and other equipment, and the personnel involved in the LNG bunkering operations.
This document is based on the assumption that the receiving ships and LNG bunkering supply facilities
are designed according to the relevant and applicable codes, regulations, and guidelines such as the
International Maritime Organization (IMO), ISO, EN, and NFPA standards and the Society for Gas as a
Marine Fuel (SGMF) and other recognized documents during LNG bunkering. Relevant publications by
these and other organizations are listed in the Bibliography.
This document should be combined with the requirements set on ISO 20519.
In cases where the distance to third parties is too close and the risk exceeds acceptance criteria, the
bunkering location should not to be considered.
vi
...