Other general criteria compilations

The Russian criteria are the General Provisions governing the safety of power stations (OPB 88/97, 1997). They are similar to the US GDC, except that they include some modern concepts such as the one concerning the defence against severe accidents and that they are a little different in some parts, such as for the negative power reactivity coefficient and for the part concerning the containment. 

The Italian criteria for the Unified Nuclear Design (PUN) (ENEA/DISP, 1987) were prepared between 1983-86 for the Italian standardized reactors then being designed. They were accompanied by criteria for severe accidents. 

In June 1985, an Italian criterion was announced (Petrangeli and Zaffiro, 1985) for the limitation of the consequences of a severe accident by simple plant modifications and by a management system of the same accidents  

It is deemed realistic to ensure, by additional provisions of accident management, with a confidence limit of the order of 95 per cent, that the external iodine or caesium releases, in situations which otherwise would lead to uncontrolled severe accidents (core melt, and so on), be kept within the limit of the 0.1 per cent of the core inventory. 

The question that this criterion intended to answer was the following What are the maximum realistically thinkable releases, in severe accident conditions, which are consistent with the best use of the capabilities of present design plants, if a structure of accident management (procedures, equipment, training) is created  

---