France standard board (UTE) has published IEC/EN 62305-2 in January 2005, more than one year before publication of the standard at IEC or EN level. Purpose was to gain experience when the voting stage occurred for this standard in 2006. UTE has also developped a specific software to apply this risk assessment methode. By now we have more than 2 years of application of both standard and software. The software called Jupiter is just a tool but it helps a lot in introducing data and making easy calculations. This software introduces features such as drawing of the building to calculate accurate collection areas, design of the lines and of circuitry inside the building, evaluation of fire risk existing inside the structure, accurate selection of the needed SPDs as well as an automatic provider of protection solution. This means that studies for simple building may be done by contractors when more complete studies still need to be done by experts but their task becomes a lot easier. This is perfectly in line with the Qualifoudre qualification scheme introduced by INERIS in France. We have now applied this risk method on a large amount of structures with various risks (explosive, radioactive, fire ...). Purpose of this paper is to share this experience and to discuss applicability of some parameters introduced in the standard IEC/EN 62305-2.