Nuclear power is an important source of clean energy to the civilian grid. The average age of nuclear power stations is increasing, and they are more expensive to operate than plants that burn natural gas to produce electricity. To avoid the premature shut down or decommissioning of more plants in the western world, their lifespan can be extended using safer and economically competitive materials. These materials are called Accident Tolerant Fuels (ATF) and have never been used before in a light water reactor (LWR). Therefore, the environmental degradation behavior of ATF needs to be characterized in the entire fuel cycle. One of the candidate ATF materials are FeCrAl alloys, which have extraordinary resistance to attack by steam, they possess high mechanical properties, and are manufacturable in industrial scale at competitive costs. The use of ATF will allow for higher fuel enrichment and for extending the life of the fuel inside of the LWR, thus minimizing refueling costs.