Preparation of steel substrates before application of paints and related products — Test methods for non-metallic blast-cleaning abrasives — Part 8: Field determination of water-soluble chlorides

This document specifies a field method for the determination of water-soluble chlorides in non-metallic blast-cleaning abrasives. This field method is provided as a kit with all components and premeasured extraction solution. This document differs from ISO 11127-7 in that equal volumes of the sample of abrasive and extraction solution are used for the determination of chloride level in the abrasive. In comparison, ISO 11127-7 uses a weight to volume ratio of abrasive to solvent (deionized water) to extract soluble salts from the abrasive. It is intended for use in the field as compared to ISO 11127-7, which is well suited for use in the laboratory.

Préparation des subjectiles d'acier avant application de peintures et de produits assimilés — Méthodes d'essai pour abrasifs non métalliques destinés à la préparation par projection — Partie 8: Titre manque

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Status
Published
Publication Date
08-Oct-2020
Current Stage
6060 - International Standard published
Start Date
09-Oct-2020
Completion Date
09-Oct-2020
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INTERNATIONAL ISO
STANDARD 11127-8
First edition
2020-10
Preparation of steel substrates before
application of paints and related
products — Test methods for non-
metallic blast-cleaning abrasives —
Part 8:
Field determination of water-soluble
chlorides
Reference number
ISO 11127-8:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 11127-8:2020(E)
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© ISO 2020

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ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 11127-8:2020(E)
Contents Page

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

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

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

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

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

4 Reagent ........................................................................................................................................................................................................................... 1

5 Apparatus ..................................................................................................................................................................................................................... 2

6 Sampling ........................................................................................................................................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 2

8 Confirmation of results .................................................................................................................................................................................. 2

9 Test results .................................................................................................................................................................................................................. 3

Annex A (informative) International standards for non-metallic blast-cleaning abrasives ......................4

Bibliography ................................................................................................................................................................................................................................ 5

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 11127-8:2020(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 of 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 www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee

SC 12, Preparation of steel substrates before application of paints and related products.

A list of all parts in the ISO 11127 series can be found on the ISO website.

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 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 11127-8:2020(E)
Introduction

The use of non-metallic abrasive blast media is common practice for dry and wet surface cleaning and

blasting for substrate preparation prior to coating application. The non-metallic abrasive media are

taken from their natural environment which may contain various soluble salt contaminants including

chloride salts. High chloride salt concentrations in the abrasive blast media may provide for transfer

of the chloride ions to the substrate during the blasting process which would then cause premature

failure of the applied coating.

To limit the risk of contaminating the steel surface from contaminants in the abrasive media, the

chloride levels are quantified with ion specific testing methods that are referenced in this document.

This document provides guidance on analysing specifically for the chloride ion in the presence of other

less / non-corrosive salts such as nitrates and carbonates.

This document is a part of the ISO 11127 series that deals with the sampling and testing of non-metallic

abrasives for blast-cleaning.

The types of non-metallic abrasive and requirements on each are contained in ISO 11126.

The ISO 11126 and ISO 11127 series have been drafted as a coherent set of documents on non-metallic

blast-cleaning abrasives. Information on all parts of both series is given in Annex A.

© ISO 2020 – All right
...

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