In summary, while NACE SP0170-2021 does not exist, the 2018 version is the current and crucial standard for anyone involved in the design, operation, maintenance, or inspection of refinery equipment containing austenitic stainless steels. The document provides the necessary framework to manage the severe risk of polythionic acid stress corrosion cracking during shutdowns. For engineers and asset managers, ensuring compliance with NACE SP0170 is not just about following a rule; it is an essential practice for ensuring safety, regulatory compliance, operational reliability, and the long-term economic viability of industrial assets.
Obtaining the official PDF from ensures that the engineering team has the correct data sets, charts, and legal disclaimers necessary for audit trails and insurance compliance. nace sp0170 pdf 2021
The numbering provides historical context: indicates it was the first standard practice ("SP") published in 1970 ("70"). It was the very first "Standard Practice" released by NACE International (now part of AMPP). In summary, while NACE SP0170-2021 does not exist,
(formerly NACE International)
) is pumped into the system to maintain a slight positive pressure. Obtaining the official PDF from ensures that the
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