ISO 23222:2020

INTERNATIONAL ISO
STANDARD 23222
First edition
2020-12
Corrosion control engineering life
cycle — Risk assessment
Ingénierie du contrôle de la corrosion au cours du cycle de vie —
Évaluation des risques
Reference number
©
ISO 2020
© ISO 2020
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ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General principles . 2
4.1 Objectives. 2
4.2 Principles . 2
5 Risk assessment procedure . 2
5.1 General . 2
5.2 Risk identification . 2
5.3 Risk analysis . 2
5.3.1 Objectives . 2
5.3.2 Corrosion sources . 3
5.3.3 Design . 3
5.3.4 Research and development . 3
5.3.5 Materials, technology, manufacturing, construction, storage and
transportation, installation and commissioning, and repair . 4
5.3.6 Acceptance inspection . 4
5.3.7 Operation . 4
5.3.8 Maintenance . 4
5.3.9 Scrap and disposal . 4
5.3.10 Documents and records . 4
5.3.11 Resource management . 5
5.3.12 Comprehensive assessment . 5
5.4 Risk evaluation . 5
5.4.1 Evaluation principle . 5
5.4.2 Evaluation method . 5
5.4.3 Risk assessment report . 5
6 Quantitative analysis of risk . 6
Annex A (informative) Corrosion control engineering life cycle risk assessment form .7
Annex B (informative) Quantitative analysis of risk .20
Bibliography .21
Foreword
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This document was prepared by Technical Committee ISO/TC 156, Corrosion of metals and alloys,
Subcommittee SC 1, Corrosion control engineering life cycle.
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iv © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 23222:2020(E)
Corrosion control engineering life cycle — Risk assessment
1 Scope
This document specifies the general requirements for risk assessment in the life cycle of corrosion
control engineering.
This document is applicable to a risk assessment of all types of corrosion control engineering
programmes.
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 23123, Corrosion control engineering life cycle — General requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
risk assessment
overall process of risk identification (3.2), risk analysis (3.3) and risk evaluation (3.4)
3.2
risk identification
process of finding, recognizing and describing the corrosion risk of all elements in the corrosion control
engineering life cycle
3.3
risk analysis
process to understand the nature of the corrosion risk and the degree of damage
Note 1 to entry: Risk analysis is the basis of risk assessment (3.1).
3.4
risk evaluation
process of comparing the results of the risk analysis (3.3) and summarizing the traceability and
supporting documents to determine whether the corrosion risk of all elements in the corrosion control
engineering life cycle and/or its magnitude is acceptable or tolerable
3.5
consequence
outcome of an event affecting objectives
Note 1 to entry: A consequence can be certain or uncertain and can have positive or negative direct or indirect
effects on objectives.
Note 2 to entry: Consequences can be expressed qualitatively or quantitatively.
Note 3 to entry: Any consequence can escalate through cascading and cumulative effects.
[SOURCE: ISO 31000:2018, 3.6]
4 General principles
4.1 Objectives
The purpose of risk assessment is to:
a) improve the integration, systematization, mutual coordination and optimization of all elements of
the corrosion control engineering life cycle;
b) create and protect the benefits of human health and safety, cost-effectiveness, long-term operation
and environmental protection.
4.2 Principles
For risk assessment to be effective, an organization should, at all levels, conform to the following
principals:
a) risk assessment should be based on ISO 23123 or other risk criteria, and should be performed on all
elements of the corrosion control engineering life cycle;
b) risk assessment is transparent and inclusive;
c) risk assessment is dynamic, iterative and responsive to change;
d) risk assessment takes human factors into account;
e) risk assessment is systematic, structured and timely.
5 Risk assessment procedure
5.1 General
The risk assessment process of a corrosion control engineering life cycle includes the following steps.
a) Identify the corresponding actual risk of all elements in the corrosion control engineering life cycle.
b) Research and analyse whether all elements are implemented in accordance with ISO 23123.
c) Analyse the evaluation result and submit the identified assessment report.
5.2 Risk identification
The risk of all elements of the corrosion control engineering life cycle should be identified collectively and
accurately in accordance with the actual situation of the main programme.
5.3 Risk analysis
5.3.1 Objectives
The objectives should be analysed as follows.
a) Whether the corrosion control engineering is implemented in accordance with the principles given
in Clause 4.
2 © ISO 2020 – All rights reserved

b) Whether the objectives are implemented into the risk analysis of all elements of the corrosion
control engineering life cycle, and communicated, and maintained in all aspects of the life cycle.
In addition, whether the objectives adapt the corrosion control engineering life cycle and the
protected main programme life cycle. The corrosion control engineering life cycle depends on,
serves and assists the main programme. In some cases, it is also restricted to the main programme.
5.3.2 Corrosion sources
The corrosion sources should be analysed as follows.
a) Whether the internal and external corrosion sources are identified comprehensively and accurately.
b) Whether new corrosion sources generated in the implementation process are identified
comprehensively and accurately.
c) Whether the conditions of the main programme and the influence of the corrosion control
engineering body are taken into account.
d) Whether an established procedure has been identified.
e) How the corrosion and its sources are monitored and mitigated, which shall be analysed during the
lifetime of the assessment.
5.3.3 Design
The design should be analysed as follows.
a) Whether the design takes into account all elements, links and nodes throughout the entire life cycle
of the corrosion control process.
b
...