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V-1064 — Steam Condensate Vessel V-1064

Sulfur Recovery Unit · Steam Condensate service · Installed Aug 25, 2014 (12 yrs in service)

Medium
Current Min. Thickness
2.264 in
t-min 2.250 in
Measured Corrosion Rate
8.50 mpy
ML-predicted: 5.66 mpy
Remaining Life
1.6 yrs
Next Inspection Due
Jun 16, 2027
Interval: 0.8 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. 2
Joint Efficiency1.00
Design Pressure633 psig
Design Temperature476 °F
Operating Pressure385 psig
Operating Temperature292 °F
Diameter116 in
Nominal Thickness2.373 in
Corrosion Allowance0.0625 in
H2S / Chloride38 / 114 ppm
Flow Velocity16.7 ft/s
Process pH7.35
InsulatedYes

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
8.34 mpy
Predicted corrosion rate under these conditions (-0.16 mpy vs. current measured rate)
Implied Remaining Life
1.7 yrs
Implied Reinspection Interval
0.8 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 Spot42.2709 in2.2635 in
Feb 8, 2025UT Grid + RT42.2848 in2.2825 in
Jan 24, 2023UT Grid (API 572)42.2976 in2.2852 in
Aug 12, 2020UT Grid + RT42.3220 in2.3068 in
Nov 2, 2017UT Spot42.3446 in2.3325 in