ДСТУ EN 12954:2022 Катодная защита подземных и подводных металлических сооружений. Основные принципы и использование для трубопроводов (EN 12954:2019, IDT)

ДСТУ EN 12954:2022
(EN 12954:2019, IDT)

Катодний захист підземних та підводних металевих споруд. Основні принципи та використання для трубопроводів

 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Abbreviations and symbols

5 Cathodic protection personnel competence

6 Principles and criteria of cathodic protection

6.1 Principles of cathodic protection

6.2 Cathodic protection criteria

6.3 Alternative method

6.3.1 100 mV cathodic potential shift

6.3.2 Other methods

6.4 Criteria in presence of a.c.

7 Prerequisites for application of cathodic protection

7.1 General

7.2 Electrical continuity

7.3 Electrical isolation

7.4 External coating

8 Useful data and design considerations

8.1 General

8.2 Structure details

8.3 Service conditions

9 Design

9.1 General

9.2 Design lifetime

9.3 Adjacent structures and external electrical sources

9.4 Electrical continuity/discontinuity

9.5 Protective coatings

9.6 Current demand

9.7 Galvanic anode systems

9.7.1 General considerations

9.7.2 Utilization of galvanic anode systems

9.7.3 Design of a galvanic anode system

9.7.4 Technical considerations and data for the design of a galvanic protection system

9.8 A.C. and/or d.c. decoupling devices

9.9 Impressed current cathodic protection (ICCP) system

9.10 Monitoring

9.11 Cable

9.12 Impressed current groundbeds

10 Installation of cathodic protection systems

11 Commissioning

11.1 General

11.2 Preliminary checking

11.3 Start-up

11.4 Assessment of the cathodic protection effectiveness

11.5 Documentations

12 Monitoring, inspection and maintenance

12.1 General

12.2 Monitoring

12.3 Inspection

12.4 Maintenance

Annex A (informative) Corrosion likelihood in soils

Annex B (informative) Reduction of the corrosion rate by using a 100 mV cathodic polarization — 100 mV cathodic potential shift

B.1 Measurement method during polarization

B.2 Measurement method during depolarization

Bibliography