This presentation outlines a structured technology qualification program to identify and validate inspection methods capable of high-resolution, volumetric wall-thickness measurement for insulated subsea assets under a formal integrity management framework. The work addresses deepwater flowlines, risers, and jumpers with significant insulation and steel wall thickness, where detection of small-scale internal corrosion has historically been limited. Advanced ultrasonic and acoustic techniques were assessed through modeling, qualification testing, and performance optimization prior to deployment. The presentation will discuss validation across multiple configurations and insulation systems, enabling improved corrosion detection capability, more accurate integrity assessments, and enhanced risk-based inspection and maintenance decision-making for subsea assets.