A 12 meter long by 1.5 meter diameter high temperature, high pressure, caustic reaction vessel fabricated from carbon steel was corroding at around 3,000um per annum and was being replaced regularly every 3 years. After 2 ½ years use (and with only 2,000um corrosion allowance remaining) Techcoat Services Insitu Electroless Nickel Plated the vessel, the vessel was subsequently checked every 3 months for wall internal corrosion and resultant wall thickness and the EN has effectively halted the corrosion of the carbon steel. After an additional 2 ½ years of use the vessel still retains the corrosion allowance that was evident pre plating. Essentially this vessel has been given a new lease of life and continues to perform in service well beyond its normal replacement date.