Ships and marine technology -- Marine NOx reduction agent AUS 40

ISO 18611-3:2014 describes best practice recommendations and requirements for handling, transportation, and storage of NOx reduction agent AUS 40 (aqueous urea solution), specified in ISO 18611-1. These recommendations and requirements are necessary to preserve the specified quality of AUS 40 from any point of production to the point where it is filled into the on-board tank of the vehicle, in order to ensure the proper function of the selective catalytic reduction (SCR) converter systems. This International Standard is covering quality requirements and guidelines for AUS 40 for marine applications, irrespective of manufacturing method or technique.

Navires et technologie marine -- Agents réducteurs NOx marins AUS 40

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Status
Published
Publication Date
22-Sep-2014
Current Stage
9093 - International Standard confirmed
Start Date
04-May-2020
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ISO 18611-3:2014 - Ships and marine technology -- Marine NOx reduction agent AUS 40
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INTERNATIONAL ISO
STANDARD 18611-3
First edition
2014-10-01
Ships and marine technology —
Marine NOx reduction agent AUS 40 —
Part 3:
Handling, transportation and storage
Navires et technologie marine — Agents réducteurs NOx marins AUS
40 —
Partie 3: Manipulation, transport et stockage
Reference number
ISO 18611-3:2014(E)
ISO 2014
---------------------- Page: 1 ----------------------
ISO 18611-3:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, 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.
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Published in Switzerland
ii © ISO 2014 – All rights reserved
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ISO 18611-3:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General requirements and recommendations ...................................................................................................................... 2

4.1 Requirements for the use of materials compatible with AUS 40 ................................................................. 2

4.2 Physical conditions during transportation and storage ...................................................................................... 3

4.3 Cleanness of surfaces in contact with AUS 40 .............................................................................................................. 4

4.4 Recommendation on further properties........................................................................................................................... 4

5 Quality assurance ................................................................................................................................................................................................ 5

5.1 General ........................................................................................................................................................................................................... 5

5.2 Sampling ....................................................................................................................................................................................................... 5

5.3 Quality verification .............................................................................................................................................................................. 5

5.4 Procedures for product release and handling of non-conforming product........................................ 6

5.5 Quality assurance.................................................................................................................................................................................. 6

6 Procedures for handling of containers and equipment ............................................................................................... 7

6.1 General ........................................................................................................................................................................................................... 7

6.2 Dedicated bulk operation .............................................................................................................................................................. 7

6.3 Non-dedicated bulk operation................................................................................................................................................... 7

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2014 – All rights reserved iii
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ISO 18611-3:2014(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 WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

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

SC 2, Marine environment protection.

ISO 18611 consists of the following parts, under the general title Ships and marine technology — Marine

NOx reduction agent AUS 40:
— Part 1: Quality requirements
— Part 2: Test methods
— Part 3: Handling, transportation and storage
iv © ISO 2014 – All rights reserved
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ISO 18611-3:2014(E)
Introduction

In order to protect the environment and to enhance air quality, exhaust emissions regulations around

the world are continuously strengthened. For ships with large combustion engines, particulate matter

(PM), nitrogen oxide (NOx) emissions, and sulfur dioxide emissions are the main concern, and efforts

have been focused on the development of technology that can reduce them effectively with minimum fuel

economy penalty. Selective catalytic reduction (SCR) converters using a urea solution as the reducing

agent is considered to be a key technology for reducing NOx emissions. The quality of the urea solution

used for that technology needs to be specified to ensure reliable and stable operation of the SCR converter

systems. The ISO 18611 series provides the specifications for quality characteristics, for handling,

transportation, and storage, as well as the test methods needed by manufacturers of SCR converters, by

engine producers, by producers, distributors of the urea solution, and by fleet operators/ship owners.

Efficient expanding of the use of urea SCR technology requires a consolidated framework that can be

followed by producers, end users, OEMs, and catalyst suppliers.
© ISO 2014 – All rights reserved v
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INTERNATIONAL STANDARD ISO 18611-3:2014(E)
Ships and marine technology — Marine NOx reduction
agent AUS 40 —
Part 3:
Handling, transportation and storage
1 Scope

This part of ISO 18611 describes best practice recommendations and requirements for handling,

transportation, and storage of NOx reduction agent AUS 40 (aqueous urea solution), specified in

ISO 18611-1. These recommendations and requirements are necessary to preserve the specified quality

of AUS 40 from any point of production to the point where it is filled into the on-board tank of the vehicle,

in order to ensure the proper function of the selective catalytic reduction (SCR) converter systems.

This International Standard is covering quality requirements and guidelines for AUS 40 for marine

applications, irrespective of manufacturing method or technique.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 18611-1, Ships and marine technology — Marine NOx reduction agent AUS 40 — Part 1: Quality

requirements

ISO 18611-2, Ships and marine technology — Marine NOx reduction agent AUS 40 — Part 2: Test Methods

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
bulk operation
handling of AUS 40 in large containers

Note 1 to entry: Examples of large containers are road tankers, rail cars, storage tanks, and tank vessels.

3.2
packaged shipment
handling of AUS 40 in small containers

Note 1 to entry: Examples of small containers are drums, cans, bottles, intermediate bulk containers (IBCs).

3.3
production batch of AUS 40

quantity of AUS 40 produced at one operation at a site where the product has (last) been physically or

chemically modified to reach compliance with the specifications defined in ISO 18611-1

Note 1 to entry: Mixing of AUS 40 volumes does not constitute a physical or chemical modification, so long as the

quality of the volumes before mixing complies with the specifications given in ISO 18611-1.

© ISO 2014 – All rights reserved 1
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ISO 18611-3:2014(E)
3.4
shelf life

period of time starting with the completion of the production of the batch in which AUS 40, stored under

specific conditions, remains within the specifications defined in ISO 18611-1, Table 1

4 General requirements and recommendations
4.1 Requirements for the use of materials compatible with AUS 40
4.1.1 General

To avoid contamination of AUS 40 and to resist corrosion of the devices used (containers, tubes, valves,

fittings, gaskets, hoses, etc.), all materials in direct contact with AUS 40 during handling, transportation,

and storage, including sampling, shall be compatible with AUS 40.

It is the responsibility of the user of this International Standard to ensure that the correct materials are

used. The list of the materials given in Tables 1 and 2 shall be used for guidance only until such time as

more definitive information is established.

Any material with uncertain compatibility with AUS 40 shall be tested. The test conditions should reflect

the intended temperature range and contact time, in order to evaluate possible influences on the product

quality as specified in this International Standard. In addition, this test shall ensure that the integrity of

the material in contact with AUS 40 is maintained. Accelerated tests using higher temperatures can be

used, as appropriate.

If a contamination of AUS 40 is detected during handling, transportation, and storage, an investigation

shall be carried out to determine the causes of contamination and to take appropriate corrective actions.

NOTE Choice of materials for the purpose of storing/distributing AUS40 on-board a vessel might be subject

to special authority and /or certification body requirements.
4.1.2 Recommended materials
Examples of materials recommended for use with AUS 40 are given in Table 1.

NOTE This list has been compiled in accordance with best available knowledge about state-of-the-art

materials at the time of publication of this part of ISO 18611.
Table 1 — Examples of recommended materials

Highly alloyed austenitic Cr-Ni-steels and Cr-Ni-Mo-steels, for example, in accordance with EN 10088-1,

EN 10088-2, and EN 10088-3 (i.e. 1.4541 and 1.4571), or stainless steel 304 (S30400), 304L (S30403), 316

(S31600), and 316L (S31603) in accordance with ASTM A240, ASTM A276, and ASTM A312

Titanium
Ni-Mo-Cr-Mn-Cu-Si-Fe alloys, e.g. hastelloy c/c-276
Polyethylene, free of additives
Polypropylene, free of additives
Polyisobutylene, free of additives
Perfluoroalkoxyl alkane (PFA), free of additives
Polyfluoroethylene (PFE), free of additives
Polytetrafluoroethylene (PTFE), free of additives

NOTE 1 The sequence given in this list does not constitute a ranking of the recommended materials.

NOTE 2 Materials made of plastics can contain various kinds of additives used either for processing or for special kinds of

serviceability. These additives can possibly migrate into AUS 40. For this reason, it is advisable that special care be taken for

testing the contamination of AUS 40 by additives from plastic materials used in direct contact with AUS 40.

2 © ISO 2014 – All rights reserved
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ISO 18611-3:2014(E)
Table 1 (continued)
Copolymers of vinylidenefluoride and hexafluoropropylene, free of additives
FIBREGLASS based on a proper resin

NOTE 1 The sequence given in this list does not constitute a ranking of the recommended materials.

NOTE 2 Materials made of plastics can contain various kinds of additives used either for processing or for special kinds of

serviceability. These additives can possibly migrate into AUS 40. For this reason, it is advisable that special care be taken for

testing the contamination of AUS 40 by additives from plastic materials used in direct contact with AUS 40.

4.1.3 Materials not recommended
Examples of materials not recommended are given in Table 2.

NOTE This list has been compiled in accordance with best available knowledge about state-of-the-art

materials at the time of publication of this part of ISO 18611.
Table 2 — Examples of materials not recommended

Materials forming compounds as a result of reaction with ammonia, which might negatively interfere with the

SCR converter system: carbon steels, zinc coated carbon steels, mild iron
Non-ferrous metals and alloys: copper, copper alloys, zinc, lead
Solders containing lead, silver, zinc, or copper
Aluminium, aluminium alloys
Magnesium, magnesium alloys
Plastics or metals coated with nickel
4.2 Physical conditions during transportation and storage
4.2.1 General recommendation

In order to avoid any impairment of the AUS 40 quality during transportation and storage, the following

conditions should be taken into account:

— in order to prevent decomposition of the urea, as well as the evaporation of water in the case of

vented containers, prolonged transportation or storing above 25 °C should be avoided;

NOTE 1 Insulation can be required, especially in hot areas of the world.

NOTE 2 In hot areas of the world where there is a real risk of recommended long-term storage temperatures

being exceeded, temperature monitoring of the AUS 40 is recommended.
NOTE 3 Prolonged storage at temperatures
...

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