CONCEPT DEMONSTRATION
66Phillips 66Vessel Integrity Intelligence
← Vessel Registry

V-1100 — Wet CO2 Gas Drum V-1100

Fluid Catalytic Cracker · Wet CO2 Gas service · Installed Aug 30, 1993 (33 yrs in service)

Low
Current Min. Thickness
0.279 in
t-min 0.209 in
Measured Corrosion Rate
0.50 mpy
ML-predicted: -0.45 mpy
Remaining Life
60+ yrs
Next Inspection Due
Aug 19, 2036
Interval: 10.0 yrs (API 510)

UT Thickness Trend

Minimum CML reading per inspection vs. ASME Sec. VIII t-min

Vessel Specification

MaterialSA-516-70 Carbon Steel
Design CodeASME BPVC Section VIII, Div. 1
Joint Efficiency1.00
Design Pressure203 psig
Design Temperature256 °F
Operating Pressure152 psig
Operating Temperature197 °F
Diameter41 in
Nominal Thickness0.292 in
Corrosion Allowance0.0625 in
H2S / Chloride21 / 122 ppm
Flow Velocity4.8 ft/s
Process pH8.23
InsulatedNo

Corrosion & Remaining-Life What-If

Adjust operating conditions to see the live model-predicted corrosion rate and implied remaining life

Live Prediction — What-If Model
0.10 mpy
Predicted corrosion rate under these conditions (-0.40 mpy vs. current measured rate)
Implied Remaining Life
60+ yrs
Implied Reinspection Interval
10.0 yrs

What-if model: standardized Ridge regression, R² 0.56 on held-out fleet data (3.25 mpy MAE). Runs entirely client-side for instant feedback — see Model Insights for the full fleet-scale ensemble model used for official predictions.

Governing Damage Mechanism — CO2 (Sweet) Corrosion

API 571 §4.2.2

Carbonic-acid corrosion from dissolved CO2 in aqueous phases; rate peaks around 100–160°F and increases with velocity.

Recommended inspection approach: UT thickness grid focused on low points and water dropout locations; monitor produced-water chemistry.

Inspection History

UT thickness readings, most recent first

DateMethodCML CountAvg ThicknessMin CML Thickness
Aug 22, 2026UT Grid + RT40.2833 in0.2785 in
Jan 20, 2026UT Spot40.2829 in0.2739 in
Jun 6, 2023UT Spot40.2838 in0.2824 in
Nov 13, 2020UT Spot40.2851 in0.2694 in
Mar 22, 2018UT Grid (API 572)40.2853 in0.2848 in
Feb 3, 2016UT Grid (API 572)40.2829 in0.2648 in
May 1, 2014UT Grid + RT40.2869 in0.2834 in
Apr 14, 2012UT Grid (API 572)40.2859 in0.2723 in
May 24, 2010UT Grid (API 572)40.2851 in0.2661 in
Jul 3, 2007UT Grid + RT40.2885 in0.2712 in
Sep 10, 2004UT Grid (API 572)40.2879 in0.2811 in
Dec 21, 2002UT Grid (API 572)40.2887 in0.2852 in
Jun 10, 2000UT Grid (API 572)40.2897 in0.2724 in
Nov 1, 1998UT Grid + RT40.2911 in0.2867 in
Apr 29, 1996UT Grid (API 572)40.2892 in0.2754 in