Similar to concrete a containment system should be designed for a lifespan of 50 years (assuming there is no failure, a containment should be designed for the life expectancy of the transformer). Based on all currently available information, we are confident that Albarrie’s Oilmat will last 50 years. Our educated guess is based on assessing all available data and samples of the Oilmat used to make the containment for the Bruce Power Nuclear Station 10 years ago. Today, these samples work and perform the same way they did at the installation time.