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Common challenges include poorly documented past repairs, CP interference from nearby structures or DC-powered equipment, and inconsistent inspection records. Integrating RP 586 recommendations into an asset integrity management program, and keeping thorough records, reduces these gaps and aids regulatory compliance.
The document emphasizes a layered defense: select corrosion-resistant materials and proper drainage in design; apply and maintain appropriate coatings; and install cathodic protection where coatings can’t provide complete protection. Routine inspection and monitoring are central to the approach—visual checks, holiday testing, CP potential measurements, and stray current surveys identify issues before they escalate.
Lena looked at the crack again. It wasn’t just a surface flaw. Under the black light, it had a telltale feathering pattern—micro-fissures that RP 586 explicitly classified as a "Type 3 indication," meaning immediate repair.
She turned to Taggart. “Vessel is rejected. You’re grinding out that weld tonight.”
