The standard adopts a holistic to mitigating CUI. This means it goes beyond just specifying a coating or an insulation material; it provides a framework for integrating all relevant disciplines—mechanical design, materials selection, protective coatings, thermal insulation, and ongoing inspection—to effectively control this complex corrosion mechanism.
Not all insulation is created equal.
You can purchase the current standard from the AMPP Store (formerly NACE International).
Before diving into the standard's solutions, it is vital to understand the environment that NACE SP0198 seeks to mitigate. CUI occurs when water enters the insulation system and gets trapped.
If you need the , purchase it directly from AMPP (approx. $150–$250 for non-members, less for members). For occasional reference, check if your organization has a shared standards library. Never risk using a pirated copy for operational decisions—offshore corrosion failures are far more expensive than the cost of the PDF.
Recognizing that even the best plan can fail with poor execution, these sections outline best practices for installation and quality control of both coatings and insulation. It provides clear guidance on inspection procedures for detecting CUI, including non-destructive evaluation (NDE) techniques to assess the condition of equipment without fully removing the insulation.
The standard emphasizes that prevention is better than cure. This includes proper design of: Insulation jackets (insulation covers). Drainage points. Flashing around penetrations. Accessing the NACE SP0198 PDF Standard
Different insulation materials hold moisture differently. The standard reviews various insulation types based on their water retention, permeability, and chemical properties:
NACE SP0198 remains the industry benchmark for managing the invisible threat of corrosion under insulation. By treating CUI as a systemic issue—combining robust high-temperature coatings, smart insulation choices, and water-shedding physical designs—facilities can transform their asset integrity management from reactive crisis control to proactive prevention.
The NACE SP0198 standard is a copyright-protected document, often referred to as SP0198-2017 or the latest revision.
NACE SP0198 Current Revision: Typically SP0198-2016 (or latest revision by AMPP) Focus: A "Systems Approach" to preventing and managing Corrosion Under Insulation (CUI) and Corrosion Under Fireproofing (CUF).