ISO 22547:2021

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 22547
ISO/TC 8
Ships and marine technology —
Secretariat: SAC
Performance test procedures for high-
Voting begins on:
2021­02­17 pressure pumps in LNG fuel gas supply
systems (FGSS) for ships
Voting terminates on:
2021­04­14
Navires et technologie maritime — Procédures d'essai de
performance des pompes haute pression dans les systèmes
d'alimentation en gaz combustible GNL (FGSS) pour navires
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 22547:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021

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ISO/FDIS 22547:2021(E)

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© ISO 2021
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ii © ISO 2021 – All rights reserved

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ISO/FDIS 22547:2021(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test arrangement . 2
4.1 Test preparation . 2
4.2 Test fluid . 3
4.3 Test parameters . 3
4.3.1 Total pressure . 3
4.3.2 Total efficiency . 4
5 Test procedure . 4
5.1 Precooling and starting . 4
5.2 Performance test . 5
6 Additional tests . 5
6.1 Unit production test. 5
6.2 Type test . 6
6.3 Endurance test . 6
6.4 Overhaul inspection . 6
6.5 Vibration and noise . 7
7 Test report . 7
Annex A (informative) Test report of high-pressure pumps in LNG FGSS - Example .8
Bibliography .10
© ISO 2021 – All rights reserved iii

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ISO/FDIS 22547:2021(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 non­governmental, 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. 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
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on the ISO list of patent declarations received. www .iso .org/ patents
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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology.
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.
iv © ISO 2021 – All rights reserved

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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 22547:2021(E)
Ships and marine technology — Performance test
procedures for high-pressure pumps in LNG fuel gas supply
systems (FGSS) for ships
1 Scope
This document specifies performance and additional tests for high-pressure pumps in marine fuel
gas supply systems (FGSS) supplying liquefied natural gas (LNG) to ships. It is applicable to positive
displacement pumps (hereinafter "pumps") to assess the mechanical features of the pumps and their
auxiliary devices.
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 1996­1, Acoustics — Description, measurement and assessment of environmental noise — Part 1: Basic
quantities and assessment procedures
ISO 10816­6, Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating
parts — Part 6: Reciprocating machines with power ratings above 100 kW
IGC Code, International Code for the Construction and Equipment of Ships carrying Liquefied Gases in Bulk
IGF Code, International Code of Safety for Ships using Gases or other Low-flashpoint Fuels
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
high pressure
maximum working pressure greater than 1,0 MPa
3.2
LOS
lubricating oil system
system to supply lubricant to the pump crank chamber
3.3
seal gas
gas used to separate the pump piston from the driving part and to prevent ice formation
3.4
test temperature
temperature of the fluid during the test, designated by the client
© ISO 2021 – All rights reserved 1

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ISO/FDIS 22547:2021(E)

3.5
test pressure
pressure of the fluid during the test, designated by the client
3.6
test flow rate
flow rate of the fluid during the test, designated by the client
3.7
temperature stabilization
state at the conclusion of cool­down, when the temperature variation of the pump is within ±2 °C/min
4 Test arrangement
4.1 Test preparation
The client, prior to setting the test parameters, shall review the information provided by the
manufacturer to ensure that the test parameters at a minimum meet the requirements of the
manufacturer.
The test arrangement used for the performance test shall supply a test fluid to the inlet of the pump and
related devices, at
...