Sp0170 Pdf Link - Nace

Mechanisms of Polythionic Acid Stress Corrosion Cracking (PTA-SCC)

However, its most widely cited application goes beyond polythionic acid. The standard has become the go-to industry reference for:

NACE SP0170 provides the roadmap to prevent this entirely. nace sp0170 pdf

The "story" of this PDF is the transition from "trial and error" to a rigorous scientific discipline of . The Core Chapters: A Survival Guide

: Applying an alkaline wash (often using soda ash) to neutralize any PTA that might form. The Core Chapters: A Survival Guide : Applying

For instance, NACE MR0175/ISO 15156 governs material selection for equipment that will be exposed to sour (H₂S) service . It specifies requirements for metals to resist Sulfide Stress Cracking (SSC) and other forms of H₂S-induced cracking.

NACE SP0170 is a published standard/technical publication available for purchase from NACE (now part of AMPP) or authorized standards distributors. For the official, complete, and binding guidance, obtain the current edition from the issuing organization. and binding guidance

When executing a shutdown procedure based on the NACE SP0170 document, teams should strictly follow these operational phases:

If you are planning a refinery turnaround, ensure your team has the latest NACE SP0170-2018 PDF to guide your shutdown procedures and protect your assets. Share public link

While the title is a mouthful, the concept is straightforward. When refinery equipment (made of austenitic stainless steel) shuts down, the hot equipment cools. As it cools, it creates an environment where corrosive agents—specifically —can form and attack the metal.