MISSION CRITICAL PROJECT No. 3:
Three Trains of the Circulating Water Piping System at a nuclear power plant had lost approximately 80% of the original thickness of their internal protective coating. And the remaining 20% coating was not functional due to its extensive deterioration level. The deterioration level contributed to various localized and complete thru wall perforations on the steel piping. Each pipeline carry 140,000 Gallons per Minute (530,000 Liters / Minute), and the pressure is 35 Psi (0.24 MPa). The power plant unit generates about 1,020 Megawatt-Hour of electricity.
PRODUCT APPLICATION
The surface preparation was made with high pressure wash, and abrasive cleaning with mechanical power tools to obtain the required substrate anchor profile, and cleanliness level.
The Warren Epoxy application method was manual with trowel, and the extensive structural repairs were supplemented with advanced composite materials (Carbon Fiber + Fiber Glass). The repairs were carried out and completed within one working day.
CONCLUSION
The Warren Epoxy System with advanced composite materials were key contributors in the execution of rapid and cost effective quality repairs, and with no safety issues. These types of nuclear power plants typically suffer losses of over 1 million dollars for each day when they have a shutdown. Therefore, the project had no room for error. Project Team’s swift execution of this turnkey Mission Critical Project in 2012 was a total success. Furthermore, in March 2017, the client informed MADERO that after five years of systems operation, the repairs are in excellent condition.
