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

ISO 18611-1:2014 specifies the quality characteristics of the marine NOx reduction agent, aqueous urea solution at 40 % concentration (AUS 40), which is needed to operate so-called SCR (selective catalytic reduction) converters. In marine applications, for example, for engine exhaust gas treatment, SCR converters are particularly suitable for selectively reducing the nitrogen oxide (NOx) emissions of internal combustion engines and boilers. This International Standard is covering quality requirements and guidelines for AUS 40 for marine applications, irrespective of manufacturing method or technique. In the remaining parts of ISO 18611, the term "NOx reduction agent" will be abbreviated to "AUS 40".

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

General Information

Status
Published
Publication Date
22-Sep-2014
Current Stage
9093 - International Standard confirmed
Start Date
08-May-2020
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ISO 18611-1:2014 - Ships and marine technology -- Marine NOx reduction agent AUS 40
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INTERNATIONAL ISO
STANDARD 18611-1
First edition
2014-10-01
Ships and marine technology —
Marine NOx reduction agent AUS 40 —
Part 1:
Quality requirements
Navires et technologie marine — Agents réducteurs NOx marins AUS
40 —
Partie 1: Exigences de qualité
Reference number
ISO 18611-1:2014(E)
ISO 2014
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ISO 18611-1:2014(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

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ii © ISO 2014 – All rights reserved
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ISO 18611-1:2014(E)
Contents Page

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

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

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

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

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

4 Designation ................................................................................................................................................................................................................ 2

5 Requirements and testing ........................................................................................................................................................................... 2

6 Marking .......................................................................................................................................................................................................................... 3

Annex A (informative) Chemical characteristics...................................................................................................................................... 4

Annex B (informative) Precision of test methods ................................................................................................................................... 5

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2014 – All rights reserved iii
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ISO 18611-1:2014(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 18611-1:2014(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 of urea solution for quality characteristics,

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

converters, by engine manufacturers, by producers, distributors, 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 18611-1:2014(E)
Ships and marine technology — Marine NOx reduction
agent AUS 40 —
Part 1:
Quality requirements
1 Scope

This part of ISO 18611 specifies the quality characteristics of the marine NOx reduction agent, aqueous

urea solution at 40 % concentration (AUS 40), which is needed to operate so-called SCR (selective

catalytic reduction) converters. In marine applications, for example, for engine exhaust gas treatment,

SCR converters are particularly suitable for selectively reducing the nitrogen oxide (NOx) emissions of

...

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