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V-1095 — Boiler Feed Water Vessel V-1095

Catalytic Reformer · Boiler Feed Water service · Installed Aug 24, 2016 (10 yrs in service)

Medium
Current Min. Thickness
1.849 in
t-min 1.901 in
Measured Corrosion Rate
17.72 mpy
ML-predicted: 10.92 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-240-304L Stainless
Design CodeASME BPVC Section VIII, Div. 1
Joint Efficiency0.85
Design Pressure411 psig
Design Temperature716 °F
Operating Pressure289 psig
Operating Temperature673 °F
Diameter129 in
Nominal Thickness2.030 in
Corrosion Allowance0.0938 in
H2S / Chloride42 / 202 ppm
Flow Velocity1.2 ft/s
Process pH7.06
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
9.80 mpy
Predicted corrosion rate under these conditions (-7.92 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 Grid + RT81.8520 in1.8491 in
Nov 24, 2024UT Grid (API 572)81.8846 in1.8676 in
Apr 14, 2022UT Spot81.9278 in1.9152 in
Nov 4, 2019UT Spot81.9726 in1.9679 in