New Product Announcement: Fast-Drying CUI Coating

TUESDAY, JULY 26, 2022

Global coatings company Hempel recently announced the launch of its new corrosion under insulation coating for severe corrosive environments, high temperatures and wet conditions beneath thermal insulation. Hempaprime CUI 275 is reportedly designed to increase productivity and improve corrosion protection at energy generation and oil and gas facilities.

Hempel reports that CUI is a major challenge for equipment operators in the process industries, with repair and downtime caused by CUI estimated to cost around $300 billion per year in the United States alone. CUI also reportedly accounts for approximately 10% of the maintenance budget for downstream oil and gas facilities.

CUI occurs when insulated pipework and other equipment is exposed to high temperatures and temperature fluctuations. Since the corrosion is hidden under the insulation, it can be difficult to detect and cause damage before being spotted, leading to expensive repair work and long periods of plant shutdown.

Hempaprime CUI 275 reportedly showed significantly higher crack resistance at high temperatures than traditional epoxy phenolic coatings during testing. This reduces the risk of cracking and premature failure during service.

The coating is a an alkylamine-cured epoxy paint and is currently available globally. According to the emailed release, it also offers the following benefits:

  • Short overcoating interval (90 minutes at 20 C [68 F]) increases productivity during application;
  • Wide temperature resistance from cryogenic up to 275 C simplifies specification;
  • Pre-qualified to ISO 19277: 2018 for categories CUI-1, CUI-2, CUI-3 and all cryogenic equivalents;
  • Wide application temperature range, down to -10 C, reduces heating costs during in-shop application and extends the maintenance season in cold climates; and
  • Can be applied on hot surfaces up to 204 C to minimize disruption and shutdown during maintenance.

“Insulated pipework and equipment can be exposed to temperature fluctuations and harsh wet/dry cycling, which makes specifying for CUI service challenging,” commented Zechariah Lim, Product Manager (CUI, high heat and insulation) at Hempel.

“Hempaprime CUI 275 is suitable for use in a wide range of temperatures from cryogenic up to 275 C and has excellent crack resistance under cycling. This makes specification simpler and ensures a more reliable performance in service.”

“Importantly, Hempaprime CUI 275 also has a very short overcoating interval – just 90 minutes at 20 C,” Lim continued. “As a result, applicators can coat more sections in one shift, increasing productivity in fabrication situations and reducing the time needed to re-insulate equipment during maintenance work. This can lead to significant cost savings for customers.”

More information about Hempaprime CUI 275 can be found here


Tagged categories: Asia Pacific; Coating Materials; Coatings; Corrosion; Corrosion protection; Corrosion Under Insulation (CUI); EMEA (Europe, Middle East and Africa); Epoxy; Hempel; Latin America; New Product Spotlight; North America; Oil and Gas; Pipelines; Program/Project Management; Quality Control; Z-Continents

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