The Fukushima Daiichi nuclear power accident in 2011 strongly highlighted the need to further strengthen effective regulatory control and oversight around Nuclear Power Plants. It induced a worldwide upgrade of national and international agencies safety plans. Nuclear Power Plants deployed new systems to reinforce their resistance to harsh weather conditions, and their ability to react in an emergency situation, a global shutdown of public communication networks and/or power supply. To do so, Bertin Instruments, with the expertise of Saphymo, provided robust and high quality instruments for gamma dose rate measurement, gamma spectrometry and air monitoring.