ISO 7054:2024
(Main)Corrosion of metals and alloys — Wiping method for measurements of gases and particles on real structures and equipment
Corrosion of metals and alloys — Wiping method for measurements of gases and particles on real structures and equipment
This document specifies a method for evaluating depositions on real structures and equipment by wiping. Depositions become corrosion and/or degradation factors for metals, alloys and organic materials, and can be analysed quantitatively to control the corrosion and degradation of real structures and equipment. The method specified in this document is suitable for evaluating the type and amounts of depositions on real structures and equipment in all industries. This method identifies the type of depositions and gives instantaneous values of the concentrations of water-soluble and insoluble depositions, which are expressed by mass per area without a time component. These values provide information on environmental factors related to corrosion and degradation. The method can be used to detect water-soluble depositions, including chloride ion, sulfate ion and other ions, and can assist users in understanding the synergistic and antagonistic effects that accelerate corrosion. This document is applicable to: — metals and their alloys; — metallic coatings; — organic coatings; — concretes and other structural materials. The method for determining chloride on clean surfaces, which ensures the cleanness of steel substrates after surface preparation such as grinding, polishing, cleaning and rinsing and before the application of paints, is given in ISO 8502-2, ISO 8502-5, ISO 8502-6 and ISO 8502-9.
Corrosion des métaux et alliages — Méthodes d’essuyage pour mesurage des gaz et des particules sur structures et équipements en conditions réelles
General Information
Standards Content (Sample)
International
Standard
ISO 7054
First edition
Corrosion of metals and alloys —
2024-10
Wiping method for measurements
of gases and particles on real
structures and equipment
Corrosion des métaux et alliages — Méthodes d’essuyage pour
mesurage des gaz et des particules sur structures et équipements
en conditions réelles
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Introduction of general wiping method . 2
5 Preparation . 3
6 Wiping procedure . 5
6.1 General .5
6.2 Wiping .6
6.3 Cautions for wiping .8
6.4 Extraction .8
7 Analysis . . 9
7.1 Soluble deposition concentration measurement method by detector tube .9
7.2 Soluble deposition concentration measurement method by ion chromatography .10
7.3 Soluble deposition concentration measurement method by other analysis devices .10
7.4 Insoluble deposition concentration measurement methods .10
8 Expression of results . 10
8.1 Units of soluble and insoluble deposition concentrations .10
8.2 Expression of soluble deposition concentration result .10
8.3 Expression of insoluble deposition concentration result .11
9 Test report .11
Annex A (informative) Example of deposition measurement of different parts of real steel
structure . .13
Annex B (informative) Example of deposition measurement of real steel structures at different
sites by season .15
Bibliography . 17
iii
Foreword
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iv
Introduction
Airborne salts, gases and particles deposited on structures and equipment are corrosion and/or degradation
factors for metals, alloys and organic materials. Information on the surfaces of these substances is useful for
understanding the corrosion conditions or degradation mechanism, the remaining life of these materials
and the corrosivity of the environment. The wiping method outlined in this document is an example of a
measurement method used to determine the types and concentrations of depositions on real structures and
equipment.
Depositions related to corrosion and degradation are classified as soluble and insoluble materials.
Soluble depositions collect moisture and retain a thin layer of water on their surfaces. Prolonged wetness
accelerates corrosion and degradation because the thin layer of water contains soluble depositions with a
high concentration of electrolytes.
Various methods for collecting airborne gases and particles are widely used to categorize corrosivity.
However, for example, the accumulation method described in ISO 9225 requires considerable time (over
a year), sampling is conducted every month and a kit consisting of clean gauze and a frame is needed to
obtain reliable data. The wiping method described in this document is also widely used in all industries,
and is a quick, low-cost method to determine the specifications of materials and coatings, the intervals for
maintenance and replacement and the progress of corrosion and degradation. Despite these advantages,
procedures for deposition sampling and measurement have not yet been established, and measures to
prevent contamination and improve measurement quality are also needed to conduct appropriate corrosion
and degradation checks.
The deposition concentration obtained by the wiping method is useful for environmental management
because it provides information for prioritising environmental degradation factors. Many instantaneous
values are used for the deposition concentration, which is expressed by a mass per unit area without a time
component.
v
International Standard ISO 7054:2024(en)
Corrosion of metals and alloys — Wiping method for
measurements of gases and particles on real structures and
equipment
1 Scope
This document specifies a method for evaluating depositions on real structures and equipment by wiping.
Depositions become corrosion and/or degradation factors for metals, alloys and organic materials, and can
be analysed quantitatively to control the corrosion and degradation of real structures and equipment.
The method specified in this document is suitable for evaluating the type and amounts of depositions on
real structures and equipment in all industries. This method identifies the type of depositions and gives
instantaneous values of the concentrations of water-soluble and insoluble depositions, which are expressed
by mass per area without a time component. These values provide information on environmental factors
related to corrosion and degradation. The method can be used to detect water-soluble depositions, including
chloride ion, sulfate ion and other ions, and can assist users in understanding the synergistic and antagonistic
effects that accelerate corrosion.
This document is applicable to:
— metals and their alloys;
— metallic coatings;
— organic coatings;
— concretes and other structural materials.
The method for determining chloride on clean surfaces, which ensures the cleanness of steel substrates after
surface preparation such as grinding, polishing, cleaning and rinsing and before the application of paints, is
given in ISO 8502-2, ISO 8502-5, ISO 8502-6 and ISO 8502-9.
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 8044, Corrosion of metals and alloys — Basic terms and definitions
ISO 9225, Corrosion of metals and alloys — Corrosivity of atmospheres — Measurement of environmental
parameters affecting corrosivity of atmospheres
ISO 11844-1, Corrosion of metals and alloys — Classification of low corrosivity of indoor atmospheres — Part 1:
Determination and estimation of indoor corrosivity
ISO 11844-2, Corrosion of metals and alloys — Classification of low corrosivity of indoor atmospheres — Part 2:
Determination of corrosion attack in indoor atmospheres
ISO 11844-3, Corrosion of metals and alloys — Classification of low corrosivity of indoor atmospheres — Part 3:
Measurement of environmental parameters affecting indoor corrosivity
ISO 7503-1, Measurement of radioactivity — Measurement and evaluation of surface contamination — Part 1:
General principles
ISO 8502-2, Preparation of steel substrates before application of paints and related products — Tests for the
assessment of surface cleanliness — Part 2: Laboratory determination of chloride on cleaned surfaces
ISO 8502-5, Preparation of steel substrates before application of paints and related products — Tests for the
assessment of surface cleanliness — Part 5: Measurement of chloride on steel surfaces prepared for painting (ion
detection tube method)
ISO 8502-6, Preparation of steel substrates before application of paints and related products — Tests for the
assessment of surface cleanliness — Part 6: Extraction of water soluble contaminants for analysis (Bresle method)
ISO 8502-9, Preparation of steel substrates before application of paints and related products
...
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