ISO 22241-3:2017
(Main)Diesel engines — NOx reduction agent AUS 32 — Part 3: Handling, transportation, and storage
Diesel engines — NOx reduction agent AUS 32 — Part 3: Handling, transportation, and storage
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 — Partie 3: Manipulation, transport et stockage
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Standards Content (Sample)
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
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ISO 22241-3:2017(E)
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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
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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.
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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.
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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.
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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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