[en] It is suggested to use the auxiliary process of a nuclear power plant, which normally serves the security of self-supply of the reactor and which is designed as binary cold adsorption process, in case of failure of the main process to secure the emergency cooling. The invention is characterized in that in case of failure of the main heat process and use of emergency cooling with simultaneaous increase of the inlet temperature of the reactor coolant in the auxiliary process, the recycling of the poor solution is interupted, the whole binary mixture evaporated, and the saturated steam mixture is then superheated and pressure-released. The specific power of the auxiliary process thus increases considerably in a very short time, the energy given to the self-supply of the nuclear power plant is not interupted. (HP)