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DNV-RP-B401
Cathodic protection design — sacrificial anodes
DNV-RP-B401 is the recommended practice for sacrificial-anode cathodic-protection design. This page describes screening scope and project-use qualification requirements.
Screening scope
- Work out current demand from surface areas, coating breakdown and design life.
- Size the sacrificial-anode mass and number, and check the final-current capacity.
- Screen offshore galvanic CP (DNV-RP-B401, 2021 edition as implemented): current demand, anode mass and final-current capacity for a stated configuration and coating condition.
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Questions
What does DNV-RP-B401 cover?
The design of sacrificial-anode cathodic-protection systems for offshore structures — current-density demand, coating breakdown factors, anode mass and current-capacity checks over the design life.
What is the screening scope?
Offshore galvanic sizing (DNV-RP-B401) and pipeline bracelet anodes (DNV-RP-F103, 2019 edition as implemented) are conditionally implemented calculation routes. They are screening tools until a project's inputs are qualified, the configuration is frozen and a named engineer checks the result. Terminal anode banks and attenuation, monopile interiors and buried zones, ICCP and current-distribution modelling are not offered.
Explore the published screening data
Every capability is free to explore — open the published dataset behind the check and read the numbers yourself.
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