Diesel engines -- NOx reduction agent AUS 32

ISO 22241-3:2017 describes best practice recommendations and requirements for the handling, transportation, and storage of AUS 32. These recommendations and requirements are necessary to preserve the specified quality of AUS 32 from any point of production to the point where it is filled into the on-board tank of a vehicle or other application, in order to ensure the proper function of selective catalytic reduction (SCR) converter systems.

Moteurs diesel -- Agent AUS 32 de réduction des NOx

General Information

Status
Published
Publication Date
25-Apr-2017
Current Stage
6060 - International Standard published
Start Date
29-Dec-2016
Completion Date
26-Apr-2017
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INTERNATIONAL ISO
STANDARD 22241-3
Second edition
2017-04
Diesel engines — NOx reduction agent
AUS 32 —
Part 3:
Handling, transportation, and storage
Moteurs diesel — Agent AUS 32 de réduction des NOx —
Partie 3: Manipulation, transport et stockage
Reference number
ISO 22241-3:2017(E)
ISO 2017
---------------------- Page: 1 ----------------------
ISO 22241-3:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

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 2017 – All rights reserved
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ISO 22241-3:2017(E)
Contents Page

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

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

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

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

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

4.1 Requirements for use of materials compatible with AUS 32 .......................................................................... 2

4.1.1 General...................................................................................................................................................................................... 2

4.1.2 Recommended materials .......................................................................................................................................... 2

4.1.3 Materials not recommended ................................................................................................................................. 3

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

4.2.1 General recommendation ......................................................................................................................................... 3

4.2.2 Shelf life ................................................................................................................................................................................... 3

4.3 Cleanliness of surfaces in contact with AUS 32........................................................................................................... 4

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

5 Quality assurance ................................................................................................................................................................................................ 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Sampling ....................................................................................................................................................................................................... 4

5.3 Testing ............................................................................................................................................................................................................ 5

5.4 Procedures for product release and handling of non-conforming product........................................ 5

5.5 Quality monitoring .............................................................................................................................................................................. 6

5.5.1 General...................................................................................................................................................................................... 6

5.5.2 Audits ......................................................................................................................................................................................... 6

5.5.3 Documentation .................................................................................................................................................................. 6

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

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

6.2 Single use non-bulk containers ................................................................................................................................................. 7

6.3 Dedicated bulk operation .............................................................................................................................................................. 7

6.4 Non-dedicated bulk operation................................................................................................................................................... 8

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

© ISO 2017 – All rights reserved iii
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ISO 22241-3:2017(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 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 the following

URL: w w w . i s o .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 34,

Propulsion, powertrain and powertrain fluids.

This second edition cancels and replaces the first edition (ISO 22241-3:2008), which has been

technically revised by adding a variety of editorial changes throughout the document and by adding

flexible compliance methodology to 5.5.1.
A list of all parts in the ISO 22241 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved
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INTERNATIONAL STANDARD ISO 22241-3:2017(E)
Diesel engines — NOx reduction agent AUS 32 —
Part 3:
Handling, transportation, and storage
1 Scope

This document describes best practice recommendations and requirements for the handling,

transportation, and storage of AUS 32. These recommendations and requirements are necessary to

preserve the specified quality of AUS 32 from any point of production to the point where it is filled into

the on-board tank of a vehicle or other application, in order to ensure the proper function of selective

catalytic reduction (SCR) converter systems.
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 22241-1, Diesel engines — NOx reduction agent AUS 32 — Part 1: Quality requirements

ISO 22241-2, Diesel engines — NOx reduction agent AUS 32 — Part 2: Test methods
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 22241-1 and the following 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 http:// www .iso .org/ obp
3.1
shelf life

period of time starting with the completion of the production of the batch in which a product, stored

under specific conditions, remains within the specification
3.2
production batch

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

or chemically modified to reach compliance with applicable specifications

Note 1 to entry: Comingling of smaller batches into one larger batch does not constitute a physical or chemical

modification, provided the smaller batches before comingling meet specification.
3.3
bulk operation
handling of AUS 32 in large containers
EXAMPLE Road tankers, rail cars, storage tanks, and tank vessels.
© ISO 2017 – All rights reserved 1
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ISO 22241-3:2017(E)
3.4
packaged shipment
handling of AUS 32 in small containers
EXAMPLE Drums, cans, bottles, intermediate bulk containers (IBCs), and totes.
4 General requirements and recommendations
4.1 Requirements for use of materials compatible with AUS 32
4.1.1 General

To avoid contamination of AUS 32 and to resist corrosion of the devices used (containers, tubes, valves,

fittings, gaskets, hoses, etc.), all materials in direct contact with AUS 32 during handling, transportation

and storage, including sampling, shall be compatible with AUS 32.

It is the responsibility of the user of this document to ensure that the correct materials are used. The

list of the materials given in Table 1 and Table 2 are for guidance only.

Any material with uncertain compatibility with AUS 32 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 ISO 22241-1. In addition, this test shall ensure that the integrity of

the material in contact with AUS 32 is maintained. Accelerated tests using higher temperatures may be

used, as appropriate.

If a contamination of AUS 32 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.
4.1.2 Recommended materials
Examples of materials recommended for use with AUS 32 are given in Table 1.

NOTE This list has been compiled in accordance with the state of the art and with the best knowledge at the

time of publication of this document.
Table 1 — Examples of recommended materials

Austenitic Cr-Ni, Cr-Ni-Mo, and Cr-Ni-Mo-Ti stainless steels, e.g. UNS S30400, S30403, S31600, S31603, S31625,

and S32100.
Titanium
Ni-Mo-Cr-W superalloys, e.g. Hastelloy C-276, (UNS N10276)
Polyethylene (PE), free of additives that may damage SCR systems
Polypropylene (PP), free of additives that may damage SCR systems
Polyisobutylene (PIB), free of additives that may damage SCR systems
Perfluoroalkoxy alkane (PFA), free of additives that may damage SCR systems
Polyfluoroethylene (PFE), free of additives that may damage SCR systems
Polyvinylidene fluoride (PVDF), free of additives that may damage SCR systems
Polytetrafluoroethylene (PTFE), free of additives that may damage SCR systems

Copolymers of vinylidene fluoride and hexafluoropropylene (PVDF-HFP), free of additives that may damage

SCR systems

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 32. For this reason, special care is taken for testing the

contamination of AUS 32 by additives from plastic materials used in direct contact with AUS 32.

2 © ISO 2017 – All rights reserved
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ISO 22241-3:2017(E)
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 the state of the art and with the best knowledge at the

time of publication of this document.
Table 2 — Examples of materials not recommended

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

with the SCR converter system: carbon steels, zinc coated carbon steels, mild iron

Nonferrous 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 32 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 30 °C should be avoided.

NOTE 1 Insulation can be required for transportation vehicles.

NOTE 2 Transient exposure to temperatures above 30 °C does not necessarily influence the quality

of AUS 32, but continuous storage at temperatures above 30 °C, for example, for periods greater than six

months, may increase the alkalinity of the fluid to levels that exceed the specifications in ISO 22241-1.

— In order to prevent solidification of AUS 32, storage below −5 °C should be avoided.

NOTE 3 Insulation or means of heating the AUS 32 can be required for transportation vehicles.

NOTE 4 Solidified AUS 32 has an approximately 7 % larger volume than the liquid and, therefore, can

cause a fully filled, closed container to burst. Solidified AUS 32, whi
...

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