Det Norske Veritas - Germanischer Lloyd

Sacrificial anode materials - Metallic materials
 N CP-0107

Annotation

This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of sacrificial anode materials.

This CP does not set the design requirements to the sacrificial anode materials. TA is based on compliance with design requirements given in the DNV GL rules and/or other regulations and standards. The CP describes how to document compliance with the requirements in order to obtain a TA certificate for the equipment. This includes, where relevant, technical requirements for how the type tests shall be performed.

A type approval certificate will normally cover one alloy type. Other arrangement may be agreed upon.

This type approval programme does not apply to the approval of anode design or to the anode fastening devices.

A type approval certificate is limited to one manufacturer at one production site.

The following test results will be printed in the type approval certificate:

test duration

electrochemical efficiency (Ah/kg) / (protective current capacity)

closed circuit potential (mV) v.s. Ag/AgCl/seawater / (driving voltage)

temperature range the approval is valid for. Type tests as specified in Sec.2 [3], shall be carried out and verified in one of the following ways:

at a DNV GL laboratory

at a recognized and independent laboratory or a laboratory accepted by the Society