These materials offer excellent chemical resistance and thermal stability up to 200°C. They are the workhorses of mid-temperature CUI prevention.
Epoxy phenolics, novolac epoxies, and Thermal Spray Aluminum (TSA). Austenitic Stainless Steel (SS):
Austenitic stainless steels face Chloride Stress Corrosion Cracking (CSCC) at temperatures above 50°C (122°F) up to 175°C (350°F) .
NACE SP0198 divides the responsibility of CUI mitigation into several actionable categories. 1. Protective Coatings (The Primary Barrier) nace sp0198 pdf
There are three main reasons why professionals look for a digital copy:
: Guidelines on how to inspect high-risk areas without necessarily stripping all insulation. The "Systems Approach"
Most vulnerable between -4°C to 175°C (25°F to 350°F) . Cyclic temperature fluctuations accelerate this process by drawing in ambient moisture through breathing mechanisms. Protective Coatings (The Primary Barrier) There are three
The standard details specific mechanisms:
NACE SP0198 is a critical standard practice for the industry, specifically titled
For maintenance personnel looking for a guide on what to do in the field, this is the most valuable section. or cryogenic)? Often favored for severe
Preventing water ingress is just as important as protecting the metal. The standard provides best practices for weather barriers, cladding joints, caulking, and designing equipment to shed water rather than pool it. Classification of Coating Systems in NACE SP0198
You can purchase the current standard from the AMPP Store (formerly NACE International).
What is the (constant temperature, cyclic, or cryogenic)?
Often favored for severe, high-temperature applications. 4. Insulation Materials
: Corrosion of reinforced concrete structures can compromise their integrity and longevity. A well-designed and implemented CP system can mitigate these risks.