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  • NEN EN 12954 : 2001

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    CATHODIC PROTECTION OF BURIED OR IMMERSED METALLIC STRUCTURES - GENERAL PRINCIPLES AND APPLICATION FOR PIPELINES

    Available format(s): 

    Withdrawn date:  01-08-2019

    Language(s): 

    Published date:  13-01-2013

    Publisher:  Netherlands Standards

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Symbols, terms and definitions
       3.1 Symbols
       3.2 Terms and definitions
    4 Principle and criteria of cathodic protection
       4.1 Principle of cathodic protection
       4.2 Criteria of cathodic protection
       4.3 Influence of alternating current on cathodically
           protected structures
    5 Prerequisites for application of cathodic protection
       5.1 General
       5.2 Electrical continuity
       5.3 Electrical isolation
       5.4 External coating
    6 Base data for design
       6.1 General
       6.2 Structure details
       6.3 Coating
       6.4 Environment
       6.5 Pipelines specific data
    7 Design and prerequisites
       7.1 General
       7.2 Electrical isolation
       7.3 Test stations
       7.4 Bonding
       7.5 Buried sleeve pipes for pipelines
       7.6 Wall entries, restraints, saddles and anchors
           for pipelines
       7.7 Bridges
       7.8 Electrically operated equipment
       7.9 Lighting protection
       7.10 Equipment for the reduction of a.c. interference
       7.11 Cathodic protection systems
       7.12 Drainage stations
       7.13 Design and design documents
    8 Installation of cathodic protection systems
       8.1 General
       8.2 Cables
       8.3 Galvanic anodes
       8.4 Impressed current systems
       8.5 Test stations
       8.6 Drainage stations
       8.7 As built documentation
    9 Commissioning
       9.1 Preliminary checking
       9.2 Start up
       9.3 Verification of the cathodic protection
           effectiveness
       9.4 Installation and commissioning documents
    10 Inspection and maintenance
       10.1 General
       10.2 Factors influencing inspection frequency
       10.3 Inspection
       10.4 Maintenance
       10.5 Results of inspection
    Annex A (informative) a.c. interference
    Bibliography

    Abstract - (Show below) - (Hide below)

    Gives the general principles for the implementation of a system of cathodic protection against corrosive attacks on buried or immersed metal structures with and without the influence of external electrical sources.

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    Development Note Partially supersedes NEN NPR 6912. (11/2003) Draft issued in February 2017. (04/2017)
    Document Type Standard
    Publisher Netherlands Standards
    Status Withdrawn
    Supersedes
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