NACE SP21427-2023 PDF

This NACE International standard practice establishes the general principles to be adopted in order to minimize the effects of stray current corrosion caused by direct current (DC) and/or alternating current (AC) from external sources on steel reinforced concrete (RC) and prestressed concrete (PC) structures or structural elements. The standard practice is intended to offer guidance for: the design of concrete structures that may be subject to stray-current corrosion; the detection of stray current interference; the selection of appropriate protection measures; and the selection of appropriate mitigation methods.
The standard practice is intended for use by designers of RC and PC structures, professionals dealing with electrochemical techniques (e.g., cathodic protection [CP], realkalization, and electrochemical chloride extraction [ECE]), owners of structures with the risk of reinforcement corrosion caused by stray currents, owners of systems that could generate stray currents to concrete structures, engineers, and other interested parties.
The technical background for this standard is published as NACE Publication 01110, prepared by Task Group (TG) 356.