CONCEPT DEMONSTRATION
66Phillips 66Vessel Integrity Intelligence
← Vessel Registry

V-1089 — Wet CO2 Gas Drum V-1089

Amine Treating Unit · Wet CO2 Gas service · Installed Sep 1, 1986 (40 yrs in service)

Low
Current Min. Thickness
0.942 in
t-min 0.793 in
Measured Corrosion Rate
1.05 mpy
ML-predicted: 1.90 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-387-11 Cl.2 (1.25Cr-0.5Mo)
Design CodeASME BPVC Section VIII, Div. 2
Joint Efficiency1.00
Design Pressure463 psig
Design Temperature348 °F
Operating Pressure339 psig
Operating Temperature299 °F
Diameter60 in
Nominal Thickness0.998 in
Corrosion Allowance0.1250 in
H2S / Chloride44 / 242 ppm
Flow Velocity12.4 ft/s
Process pH7.40
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
2.68 mpy
Predicted corrosion rate under these conditions (+1.63 mpy vs. current measured rate)
Implied Remaining Life
55.7 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 (API 572)40.9566 in0.9420 in
Mar 20, 2025UT Grid (API 572)40.9555 in0.9477 in
Jul 13, 2023UT Spot40.9606 in0.9420 in
Dec 25, 2021UT Grid (API 572)40.9662 in0.9548 in
Jun 14, 2020UT Grid + RT40.9641 in0.9553 in
Jan 22, 2019UT Spot40.9615 in0.9539 in
Dec 5, 2016UT Grid (API 572)40.9701 in0.9594 in
Oct 11, 2013UT Grid (API 572)40.9749 in0.9613 in
Dec 12, 2011UT Spot40.9729 in0.9570 in
Dec 30, 2009UT Grid (API 572)40.9748 in0.9576 in
Nov 20, 2007UT Spot40.9761 in0.9748 in
Apr 7, 2006UT Grid (API 572)40.9809 in0.9663 in
Feb 7, 2004UT Spot40.9821 in0.9811 in
May 20, 2002UT Grid (API 572)40.9797 in0.9636 in
Jun 6, 1999UT Grid (API 572)40.9886 in0.9808 in
Nov 15, 1997UT Grid + RT40.9851 in0.9675 in
Sep 6, 1994UT Grid (API 572)40.9939 in0.9765 in
Jan 11, 1993UT Spot40.9955 in0.9845 in
Jul 8, 1991UT Grid + RT40.9931 in0.9772 in
May 28, 1989UT Grid (API 572)40.9950 in0.9871 in