Pre-turnaround scans are very useful tools for facilities to utilise for planning turnaround projects. They can indicate some damage within a vessel, allowing for parts to be ordered and onsite ahead of time. They can also indicate an operational issue, which can be corrected without an entry into the vessel. If required they can indicate that the vessel is healthy and no work is needed on it at this time.
Pre-turnaround scans enable better critical path planning
Mar 1, 2021 7:49:02 AM
Topics: distillation column, Distillation Column Performance, Column Performance, packed column performance, packed column, distillation column maintenance, gamma scanning distillation columns, trayed columns, turnaround schedules, turnarounds, distillation column scan, distillation column scanning, turnaround planning, packed bed towers, trayed tower, manage turnaround costs, turnaround critical path project, pre-turnaround scans, baseline scan, column troubleshooting, pre-turnaround planning, critical path planning
Baseline scanning is critical to diagnose future column problems
Jan 18, 2021 8:49:22 AM
Baseline scans of a vessel are undertaken when it is known to be clean, operating normally, and in good mechanical condition. They are often used for comparison purposes on future troubleshooting scans. Any anomaly, or abnormal absorption observed on a baseline scan, that cannot be explained by a visible external interference or by something indicated in the column drawings, may be able to be eliminated as a potential problem area in future troubleshooting scans.
Topics: distillation column, Distillation Column Performance, Column Performance, distillation column maintenance, gamma scanning distillation columns, distillation column scan, distillation column scanning, baseline scan, column troubleshooting
How to optimise the performance of your trayed columns: case study
Dec 9, 2015 10:12:34 AM
There are a number of problems that can cause a loss of efficiency and lead to loss of production in a distillation column, including tray damage, flooding, weeping, and foaming. Gamma scan technology available from Tracerco can be utilised to locate the origin and/or severity of these problems. A Tru-Scan™ across the active area of a fractionation tray can provide hydraulic conditions and/or mechanical status of the active area, such as weeping and tray froth heights. FrothView™, a new methodology developed by Tracerco, provides a quantitative analysis of tray capacity as the total froth height on a tray that is measured using Tracerco's new detector technology and software interpretation.
In this latest blog post we will discuss how a Tru-Scan™ and FrothView™ technology was used to provide the % tray space to show the amount or percentage of available tray spacing that is occupied by froth or aerated liquid. Knowledge of the actual process conditions inside a vessel, provides engineers with the ability to make process adjustments accordingly.
Topics: Process Diagnostics, Gamma Scanning, Tray Capacity, Tru-Scan, Column Performance, FrothView