DNV—GL — CATHODIC PROTECTION DESIGN

The recommended practice related to the design of the cathodic protection, prepared by DNV GL professionals. Traditionally for all DNV GL guidelines, the document opens with the general information part explaining the very basics of the cathodic protection principle, scope of this paper, its objectives and use, its structure and relation to other documents.

The second chapter lists the references, such as the ASTM, EN and ISO standards, and another DNV GL document governing the CP of submarine pipelines by galvanic anodes. Then there is a list of abbreviations, terms, symbols and definitions used in the document. The main part of the paper addresses the general considerations for the design of cathodic protection, main design parameters to consider, design procedures and associated calculations, manufacture of the anodes and their installation.

There are three appendices at the end, first of them contains informative data tables and figures to supplement main text, while the other two provide the results of the laboratory tests of the galvanic anode materials for quality control and for electrochemical performance qualification. Noting the amount of useful technical information contained in the volume and that it has been released by the authoritative entity, we highly recommend it for familiarization to all parties involved in provision of CP.