[ Corrosion ]
[ Corrosion ]
Figure 3. The Failure Assessment Diagram( FAD) serves as the definitive analytical tool for evaluating the structural integrity of piping with detected environmental cracking.
PRC separation clarifies why nominal material choice did not prevent failure and identifies the specific program controls that would have interrupted the sequence. The mitigation playbook is built around breaking the SCC triangle. Environmental controls include insulation, weatherproofing programs, careful selection of low-leachable-chloride insulation and ancillary materials, and the use of high-performance coating systems under insulation as an extra barrier when
water ingress happens. Operational controls involve hydrotest hygiene( low-chloride water, quick forced drying, low-point management),“ nochlorine” cleaning policies for stainless systems, and IOW-based monitoring that turns mechanism susceptibility into alarm limits and maintenance triggers. Stress and metallurgical controls include welding practices that reduce residual-stress concentrations and, when appropriate, stress-relief or stabilization heat treatments for critical
or highly cold-worked parts, along with strategic upgrades to duplex or higheralloy materials in recurring high-IRC environments. By integrating standards-based integrity governance with first-principles electrochemical and fracture mechanics, the Source-to-Field framework offers a consistent method to predict where chloride damage may occur, choose inspection approaches suited to damage types, make well-supported FFS decisions, and carry out mitigation strategies that minimize unplanned stainless steel piping failures and related safety and production issues.
About the author
Randall Stremmel is an asset integrity and operations consultant based in Houston, Texas, with over twenty years of experience applying quality and conformity standards across the energy, petrochemical, O & G, and related industries. He holds a bachelor’ s degree in Welding Technology and maintains multiple professional credentials in inspection, welding, and integrity management.