CONCEPT DEMONSTRATION
66Phillips 66Vessel Integrity Intelligence
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V-1114 — Steam Condensate Vessel V-1114

Catalytic Reformer · Steam Condensate service · Installed Aug 27, 2005 (21 yrs in service)

Low
Current Min. Thickness
1.463 in
t-min 1.412 in
Measured Corrosion Rate
4.49 mpy
ML-predicted: 4.44 mpy
Remaining Life
11.2 yrs
Next Inspection Due
Mar 26, 2032
Interval: 5.6 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 Efficiency0.85
Design Pressure340 psig
Design Temperature339 °F
Operating Pressure260 psig
Operating Temperature304 °F
Diameter124 in
Nominal Thickness1.564 in
Corrosion Allowance0.1250 in
H2S / Chloride38 / 253 ppm
Flow Velocity15.5 ft/s
Process pH5.70
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
6.52 mpy
Predicted corrosion rate under these conditions (+2.03 mpy vs. current measured rate)
Implied Remaining Life
7.7 yrs
Implied Reinspection Interval
3.9 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 — General Corrosion

API 571 §4.2.1

Uniform thinning across the surface due to the process environment. Rate depends on fluid chemistry, temperature, and velocity.

Recommended inspection approach: UT thickness grid at fixed CMLs per API 510/572; trend over time to establish long-term rate.

Inspection History

UT thickness readings, most recent first

DateMethodCML CountAvg ThicknessMin CML Thickness
Aug 22, 2026UT Grid + RT41.4681 in1.4626 in
Feb 18, 2025UT Grid (API 572)41.4770 in1.4659 in
Feb 23, 2023UT Grid + RT41.4870 in1.4828 in
Mar 13, 2020UT Grid + RT41.5000 in1.4923 in
Jun 18, 2017UT Grid (API 572)41.5084 in1.5082 in
Apr 8, 2014UT Grid (API 572)41.5270 in1.5235 in
Feb 25, 2012UT Grid (API 572)41.5364 in1.5250 in
Mar 20, 2010UT Grid + RT41.5428 in1.5337 in
May 17, 2007UT Grid + RT41.5559 in1.5381 in