ДСТУ EN 13173:2022 Катодний захист сталевих морських плавучих конструкцій (EN 13173:2001, IDT)

ДСТУ EN 13173:2022
(EN 13173:2001, IDT)

Катодний захист сталевих морських плавучих конструкцій

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

Contents

Foreword

Introduction

1 Scope

1.1 Structures

1.2 Materials

1.3 Environment

1.4 Safety and environment protection

2 Normative references

3 Terms and definitions

4 Design basis

4.1 Objectives

4.2 Cathodic protection criteria

4.3 Design parameters

4.3.1 Structure subdivision

4.3.2 Description of CP zones

4.3.3 Service conditions

4.4 Electrical current demand

4.4.1 General

4.4.2 Protection current density for bare steel

4.4.3 Protection current density for coated steel

4.4.4 Protection current demand

4.5 Cathodic protection systems

4.6 Electrical continuity

4.7 Interactions

5 Impressed current system design

5.1 Objectives

5.2 Design considerations

5.3 Equipment considerations

5.3.1 Direct current power source

5.3.2 Anodes

5.3.3 Dielectric shields

5.3.4 Reference electrodes

5.3.5 Cables, terminations

6 Galvanic anode system design

6.1 Objectives

6.2 Design considerations

6.3 Factors determining the anode current output and operating life

6.4 Location of anodes

7 Cathodic protection system monitoring

7.1 Objectives

7.2 Potential measurements

7.2.1 Potential measurement method

7.2.2 Location of the reference electrodes

7.2.3 Verification of the reference electrodes

7.3 Measurement of the impressed current anode electrical current output

7.4 Impressed current power source control

7.5 Additional monitoring methods

8 Documentation

8.1 Objectives

8.2 Impressed current system

8.3 Galvanic anode systems

Annex A (informative) Guidance for current requirements for cathodic protection of offshore floating structures

Annex B (informative) Anode resistance and life determination

Annex C (informative) Typical electrochemical characteristics of impressed current anodes

Annex D (informative) Typical cofferdam arrangements