ISO/DIS 23221

DRAFT INTERNATIONAL STANDARD
ISO/DIS 23221
ISO/TC 156/SC 1 Secretariat: SAC
Voting begins on: Voting terminates on:
2020-02-14 2020-05-08
General requirements for pipeline corrosion control
engineering life cycle
ICS: 77.060
THIS DOCUMENT IS A DRAFT CIRCULATED
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This document is circulated as received from the committee secretariat.
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 23221:2020(E)
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ISO/DIS 23221:2020(E)
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Foreword ........................................................................................................................................................................................................................................iv

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

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

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

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

4 General Principles............................................................................................................................................................................................... 2

5 Objective ........................................................................................................................................................................................................................ 2

6 Corrosion sources ................................................................................................................................................................................................ 2

7 Pipeline .......................................................................................................................................................................................................................... 2

8 Technology .................................................................................................................................................................................................................. 3

9 Research and Development ....................................................................................................................................................................... 4

10 Design .............................................................................................................................................................................................................................. 4

11 Manufacturing ......................................................................................................................................................................................................... 5

12 Storage and Transportation ...................................................................................................................................................................... 5

13 Construction and installation ................................................................................................................................................................. 6

14 Commissioning ....................................................................................................................................................................................................... 6

15 Acceptance .................................................................................................................................................................................................................. 7

16 Operation ..................................................................................................................................................................................................................... 8

17 Maintenance .............................................................................................................................................................................................................. 9

18 Repair ............................................................................................................................................................................................................................... 9

19 Scrapping and Disposal ..............................................................................................................................................................................10

20 Documents and Records ............................................................................................................................................................................11

21 Resource management ................................................................................................................................................................................11

22 Comprehensive Assessment ..................................................................................................................................................................11

Bibliography .............................................................................................................................................................................................................................12

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This document was prepared by Technical Committee [or Project Committee] ISO/TC 156, [corrosion of

metals and alloys], Subcommittee SC 1, [corrosion control engineering life cycle].

The document is one of the intermediate-level standards in corrosion control engineering life cycle

system, as well as the top-level standard in industrial pipeline system. This document whose object

is the pipeline corrosion control engineering life cycle is based on ISO/CD 23123, integrating the

specific conditions of pipeline industry, to develop control requirements for all elements affecting

pipeline corrosion control engineering life cycle. Considering that pipelines of different industries,

such as: oil and gas pipeline, process pipelines, buried pipelines for municipal engineering, etc., have

their diverse corrosive environment, conditions and corrosive control demands, the standard should

not focus on the specific corrosive environment and conditions. The generality should exist. Hence,

with the characteristics of holistic, systematic and comprehensive, the document mutually coordinates

and adopts the specific corrosion control technology, method and management of related standards in

existing ISO standard system, and ensures the performance of existing standards as well.

The document only stipulates the fundamental working procedures and requirements of all related

elements in pipeline corrosion control engineering life cycle, and aims at integrating all related

elements in the corrosion control engineering as a whole system to work. The document also establishes

a traceable and supportive management system, taking each element in pipeline corrosion control

engineering life cycle as object, to realize the overall control and continuous improvement in pipeline

This document specifies overall requirements and general requirements for control elements of pipeline

It is applicable to all types of pipeline corrosion control engineering programs.

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 and IEC maintain terminological databases for use in standardization at the following addresses:

Technology for real-time testing and feedback of corrosion or damage in and out of pipelines to avoid

Precautions should be taken, and counteractions should be prepared against deviation of the expected

objectives or corresponding standards, etc., during the process of pipeline corrosion control life cycle.

Giving emergency signal and taking appropriate measures in advance before a disaster or other dangers

those need to be watched, so as to prevent the occurrence of hazard without knowledge or preparation,

The corresponding measures for environmental protection, resource consumption, engineering waste

generation and recycling of pipeline corrosion control engineering in the stage of pipeline construction

4.1 This document is the intermediate-level standard of ISO/CD 23123. It should fulfil the requirements

4.2 This document is the top-level standards of industrial pipeline system. It does not formulate the

specific professional technology, professional management standards, specifications and test methods.

This document, whose object is each element of the pipeline corrosion control engineering life cycle,

provides adoption and selection principles of corresponding technology and management standards.

4.3 A traceable and supportive management system should be established for each element to achieve

overall control and continuous improvement of pipeline corrosion control engineering life cycle.

5.1 The objectives of corrosion control engineering should satisfy the requirement of item 5.1 in

5.2 The objectives of corrosion control engineering should be communicated, implemented, and

maintained in all aspects of pipeline life cycle. The objectives should be regularly reviewed and improved

5.3 All elements of pipeline corrosion control engineering life cycle should be optimized and mutually

coordinated. The life cycle of pipeline corrosion control engineering should be adapted to the life cycle of

a) Internal corrosion sources, including but not limited to pipeline transmission medium, flow rate,

b) External corrosion sources, including but not limited to environmental factors and corrosive

6.2 New corrosion sources in the operation of pipeline, including but not limited to cathodic disbonding,

maintenance and electrochemical corrosion caused by replacing pipeline of different materials etc.;

6.3 Corrosion sources caused by changing working conditions, which include both conditions of the

6.4 All of corrosion sources should be identified systematically, comprehensively and accurately by

referring cases and corresponding standards. For example, the atmospheric corrosion of pipeline may

7.2 Pipeline should be selected based on corresponding inspection standards. For example, the

selection of pipeline in petroleum and natural gas industries may refer ISO 13623.

a) The selecting pipeline and its applied environment should be researched and investigated, to

b) Consider the processability, applicability and economy on the basis of satisfying application

a) Carry out the field survey of corrosion in the applied pipeline environment. Ensure the corrosion

b) Select appropriate pipeline to satisfy the corrosion resistance by referring the corresponding

c) Evaluate the resistance of pipeline. In the condition of lacking of similar engineering and application,

the stimulation tests in laboratory or field analysis should be the reference to select pipeline.

d) Consider the applicability and durability prior to economy on the basis of guaranteed working life.

7.3 The selected pipeline should be reviewed and assessed by specific procedures, documented and

8.1 One or more appropriate technologies should be implemented for pipeline corrosion control

a) rational design of structural processes: insulation technique, the installation of electrical isolation

points and isolation devices, the detailed integrated plan of sleeve, facilities and other electrical

affected zone, prevention of unpredicted corrosion, such as cathode screening or cathodic

b) coating protection: select coating which adapt the expected operation conditions and feasible

construction process. The optimal coating protection scheme of environmental protection and

c) electrochemical protection: evaluate the total cost and current density which is required to fully

polarize the pipeline to protect against corrosion, or current using in cathodic protection;

d) corrosion inhibitor selection: fully investigate the cause of the internal corrosion and the

chemical property of pipeline transmission medium; select optimal type, frequency and dose;

e) cleaning: include chemical and physical cleaning. The type and amount of collected feculence

should be analysed in order to inspect the control effect and ensure the frequency of pigging;

f) environment protection: adopt environment-friendly pipeline corrosion control and construction

g) composite technology: adopt composite pipe technology without electrochemical corrosion in

8.2 There should be corresponding technical standards or inspection methods to support the selection

a) Consider the safety of the operation of corrosion control engineering in priority and evaluate

b) Based on the satisfaction of technical requirement, advanced technology, process, facility and

material should be adopted with the consideration of corrosion control measures economy.

c) Selected pipeline corrosion control engineering technology should satisfy the adaptability of

d) The risk and hazard of pipeline corrosion control technical failure should be considered. The

8.3 The selected technologies should have corresponding specific performance and supportive cases