oil-and-gas-campaign-video-message-20201105.mp4
GFX: Sherwin Williams - from spec to protect
[Johnny 00:00:06] Hi, my name is Johnny Pourciau, I am the marketing director in the oil and Gas space here in North America for Sherwin-Williams Protective and Marine coatings. And today we're joined by Thomas Krenshaw, one of our subject matter experts that focuses on the downstream space. And today's topic is corrosion under insulation. Thomas, what are the biggest challenges that owners face today with CUI?
GFX: Thomas Krenshaw - Oil & Gas Development Manager Sherwin Williams Protective & Marine
[Thomas 00:00:28] Thank you, Johnny. The biggest problem is that it's hidden corrosion, so it's typically not found until the next inspection cycle and the corrosion may not be where you expect it. The other problem is that the corrosion does occur is usually isolated corrosion. And this is used at the bends and the elbows and your flanges bottom of tanks or the bottom of the vessels. These situations can be the most harmful. One corrosion engineer at a facility mentioned that CUI for more downtime than all other factors combined. Just recently at one facility, they had three breaks just in one week as a result of CUI.
[Johnny 00:01:07] So, Thomas, what operating conditions are the most to be concerned about for CUI?
[Thomas 00:01:12] There are a few situations that are pretty harmful. One is that temp range 120 to 350 degrees Fahrenheit combined with water and contaminants. This is usually the temperature in which corrosion is the most active. Also, refrigerant areas, when you have condensating pipe and then also cyclic conditions and this is usually from the processes steam house or even the commission, these are the situations that are most harmful, Johnny.
[Johnny 00:01:36] So what type of coating is best to be utilized for this service?
[Thomas 00:01:41] If the temperatures are rather constant, then the boxes are typically suitable up to about 400 degrees Fahrenheit. Usually what I recommend is following the NACE standard SP0198. And in that standard there are coating selection tables for both carbon steel and stainless steel, you just select the temperature that it's operating at for your coating system. If you're going to have any one of those harmful situations or cycle situations, then you may want to consider multi polymeric coating such as the Sherwin-Williams Heat Flex Hi-Temp 1200. This coating is resistant to temperatures from -350 up to 1200 degrees Fahrenheit. It's also resistant to thermal shock and also boiling water. It can handle these situations for long periods of time.
[Johnny 00:02:25] So, Thomas, what makes the Heat Flex Hi-Temp 1200 unique when compared to other technologies in this space?
[Thomas 00:02:32] The biggest challenge with these types of coatings, Johnny, is they don't reach full performance until they reach a certain temperature. And this had causes problems with coating damage in transportation installations and retrofits, as well as regular mechanical damage. And the Sherwin-Williams Heat Flex Hi-Temp 1200 now has a curing additive, which allows full hardness even at ambient temperatures. And this solved that problem. What this curing additive it also allows us to do is if you have a big piece of equipment is operating hot on the one hand, colder on the other, this gives peace of mind to the owners that they are being the protection they need.
[Johnny 00:03:05] So, Thomas, thank you for joining us today and sharing your expertize and your knowledge in this space. We appreciate it. And we look forward to visiting with you again soon. Have a great day.
Sherwin Williams - from spec to protect
