CONCEPT DEMONSTRATION
66Phillips 66Vessel Integrity Intelligence
← Vessel Registry

V-1147 — Steam Condensate Drum V-1147

Hydrocracker · Steam Condensate service · Installed Aug 28, 2002 (24 yrs in service)

Medium
Current Min. Thickness
0.088 in
t-min 0.215 in
Measured Corrosion Rate
9.28 mpy
ML-predicted: 8.15 mpy
Remaining Life
0.0 yrs
Next Inspection Due
Feb 20, 2027
Interval: 0.5 yrs (API 510)

UT Thickness Trend

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

Vessel Specification

MaterialSA-240-316L Stainless
Design CodeASME BPVC Section VIII, Div. 1
Joint Efficiency1.00
Design Pressure149 psig
Design Temperature621 °F
Operating Pressure109 psig
Operating Temperature462 °F
Diameter48 in
Nominal Thickness0.320 in
Corrosion Allowance0.0625 in
H2S / Chloride12 / 111 ppm
Flow Velocity12.6 ft/s
Process pH5.49
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
9.53 mpy
Predicted corrosion rate under these conditions (+0.25 mpy vs. current measured rate)
Implied Remaining Life
0.0 yrs
Implied Reinspection Interval
0.5 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 Spot60.1076 in0.0879 in
Nov 25, 2025UT Spot60.1076 in0.1033 in
May 12, 2023UT Spot60.1076 in0.0917 in
May 16, 2021UT Grid + RT60.1076 in0.0880 in
Apr 3, 2018UT Grid + RT60.1288 in0.1154 in
Mar 13, 2015UT Grid + RT60.1618 in0.1434 in
May 25, 2012UT Grid (API 572)60.1954 in0.1927 in
Mar 7, 2009UT Grid (API 572)60.2409 in0.2254 in
Feb 8, 2007UT Grid + RT60.2645 in0.2617 in
Sep 10, 2004UT Grid (API 572)60.2942 in0.2850 in