Overcoming Challenges in High Temperature Thickness Measurement

By Calvin Jory, Product Marketing Specialist at Olympus / Evident Scientific. December 9, 2019


Crude oil is an important source of energy, but using it in its natural form is inefficient and possibly dangerous. Because of this, refineries must turn crude oil into finished petroleum products. The refining process starts with heating the crude oil and putting it into a distillation column (also known as a still). In the crude distillation unit, diesel, gas, and other products boil off and are recovered at different temperatures. The distillation temperature for petroleum products ranges from as low as 30 °C (85 °F) to greater than 565 °C (1,050 °F). These high surface temperatures make inspecting refinery equipment challenging. This article discusses two common challenges for inspectors taking thickness readings in high temperature environments and ways to overcome those challenges.

Challenge: Too Hot to Handle

Periodic thickness measurements using ultrasonic testing (UT) are needed to monitor for corrosion and other defects, which can cause...

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Comments and Discussion

Posted by Praveen M N on December 23, 2019
The thickness measurement using the EMAT method... Log in or register to read the rest of this comment.

Posted by Charles Sulivan on January 4, 2020
Very educative article. I can relate to my... Log in or register to read the rest of this comment.

Posted by Fred Gabriels on February 10, 2022
Are the thickness gauges with automatic... Log in or register to read the rest of this comment.

Posted by Abdelwahab Elbagher Abdulhalim Elrigayig on March 15, 2022
Yes, there are many types of probes are used for... Log in or register to read the rest of this comment.

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