48026A-GI INDUSTRIAL-NOAA T JEFFERSON-POTBD_UTT.pdf

This is an Ultrasonic Thickness Measurement Report documenting inspection results for the NOAA Thomas Jefferson vessel at the CO State Room location 02-37-3. The inspection was conducted on 12/15/2025 by Inspec Testing, with readings taken 1 inch and 3 inches above the deck at 4-inch spacing intervals.

The report identifies significant corrosion on the starboard side shell and deck plate, with thickness measurements ranging from 0.120 to 0.245 inches compared to the original nominal thickness of 0.312 inches. Color-coded findings indicate blue readings (18.5-24.9% loss), red readings (25% or greater loss indicating substantial corrosion), and green areas showing no sound penetration. Measurements at multiple plate positions reveal varying degrees of material loss, with some areas experiencing up to 56.09% thickness loss. The inspection includes detailed elevation and plan view drawings of Level 02 Deck showing the specific measurement locations (positions 1-30) and orientation relative to the vessel structure. The document contains photographic evidence of the inspection area highlighting the visible corrosion, along with technical diagrams depicting the scanning locations and measurement methodology employed during the ultrasonic thickness assessment.