LOOK INSIDE YOUR COLUMN WHILE IT'S OPERATING

Gamma-ray scan testing is a non-invasive technique that can be used to look inside towers and vessels to examine the abnormal operation and to obtain the data for revamp. Using a collimated beam of Gamma-rays from an enclosed millicurie radio-isotope source, one can determine a density profile and interpret the scan to produce a detailed picture of what is (or isn't) inside and what is (or isn't) happening.

Gamma-ray scan can identify these conditions and determine their causes

• Displaced or damaged trays and packings.
• Flooded trays and packings
• Foaming on trays or in reboilers, condensers and accumulators.
• Weeping or dumping trays.
• Flooded downcomers
• Maldistribution of vapor and liquid in packings
• Fouling, plugging and coking.
• Unequal liquid levels on trays and in parting boxes, troughs and collectors.

Almost all column operating problems fall into one of these classes

• Operation is poor right from start-up
• Performance deteriorates gradually over time
• An upset degrades performance