OVERVIEW: The project consisted of a long wall approximately 20 mt long and 2 side walls approximately 4 metres long each. This was an excellent opportunity for Chemcote to provide ultimate surface preparation and application.
Most linings were breaking down and failing within a short period of time, between 2 & 8 weeks of service.
INDUSTRY
ENVIRONMENT
1,000°C Coking Coal transport wagon where 80°C recirculated water is used to quench the load.
SUBSTRATE
Steel outlet and inlet spools, flange faces, shut off valves, turbine casing components and manway covers
CHALLENGE
After successful spot repairs on existing hot car structures insitu, we were asked to provide the same solution on a brand new fabrication. The challenge was the length and weight of the items and the attention to detail required around all the crevices and welds.
SOLUTION
We recommended Epo-chem™ RE 500P a high temperature resistant surface tolerant, Novolac Epoxy primer. Top coated with Epo-chem™ RW500, glassflake filled, high temperature resistant Novolac Epoxy. The coating system provides excellent corrosion/erosion resistance against this environment.
SCOPE
Abrasive blasting to AS 1627.4 Class 3, 60µm profile.
Application of RE 500P in one coat at 100µm nominal and application of RW 500 at 350µm Dry Film Thickness (DFT)
OUTCOME
An inspection of our spot repairs after 12 months have indicated that our glass flake coating system can withstand these harsh environments. We expect the freshly coated components to provide the most superior coating system used on this structure to date. This saves the client a lot of money and reduces a lot of equipment down time.
RELATED CASE STUDIES
Stern Tube Life Extension During Half-life Refit
Patrol boat in slipway for refit Protection against abrasive blasting damage Application of RB364 Tube internal lining complete Overview: The half-life refit of critical components
Air Receiver Restoration for Long-Term Durability
Pitting corrosion near shaft landing After first abrasive blasting After 2nd Abrasive blast holes were found requiring composite reinforcement Filling void in difficult to reach
High Performing Replacement for 316L SS
On inspection flange corrosion Deep pitting on forged section Application of 1st coat Ready to be put into service for 25+ years of life OVERVIEW: