: The standard covers topics such as the effects of stray current, methods for detecting and measuring stray currents, and mitigation techniques. Its primary purpose is to offer guidance on protecting buried or submerged metallic structures from corrosion caused by stray electric currents.
Authorized copies of the complete, up-to-date protocol documents, annexes, and technical updates are accessible through official regulatory hubs such as the ANSI Webstore or the unified AMPP / Accuris Standards Store . nace sp0170 pdf 2021
). When the unit is shut down and opened for a turnaround, moisture ( ) and oxygen ( : The standard covers topics such as the
A 2021 version of this standard is not available. The last published edition is NACE SP0170-2018, released in September 2018. The search term likely reflects an assumption of an annual update. You can verify this on the official AMPP (formerly NACE International) website, as well as on technical standards stores like enstandards.com or standardssupply.com where only the 2018 version is offered for purchase. It is also possible that a draft or ballot for a 2021 edition was considered in the past, but this never resulted in an official publication. The search term likely reflects an assumption of
| Test | Frequency | Acceptance | |------|-----------|-------------| | Pull-off bond | 1 per 100 m² | ≥ 1.5 MPa | | Thickness (magnetic) | 5 per 10 m² | 80–120% of spec | | Porosity (ferroxyl) | 1 per 50 m² | ≤ 3 blue spots per 100 cm² | | Continuity | 100% of anode segments | ≤ 2 ohms |