[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)

[en] A device for filtration of water to the emergency cooling system is described, that by use of compressed air can flush back water to cleanse the filter in very short time

[en] An emergency core cooling system is described which discharges neutron absorber material, such as borated water, from a separate system of accumulators into the area beneath the reactor head and above the upper support plate structure for further distribution through coolant conducting devices to the top of the reactor core

[en] It is proposed to use the auxiliary process of a nuclear power plant, normally serving to secure the station service requirements of the reactor and designed as a two-fluid cold-absorbing process, for securing the emergency cooling in case of failure of the main process. The invention is characterized by the fact that on failure of the main heat process and after starting the emergency cooling with simultaneous increase of the coolant inlet temperature to the auxiliary process, the recirculation of the poor solution is interrupted, the total two-fluid mixture is evaporated, and the saturated steam mixture is subsequantly superheated and expanded. This results in a considerable increase of the specific power of the auxiliary process within a very short time; its power supply for the station service of the power plant is not interrupted. (UWI) 891 HP

[en] For emergency cooling of the PWR, a compact water jet is introduced into the upper part of the pressure vessel and is there spread by baffle plates. It provides about 1/4 of the quantity of water for energency cooling. It is introduced via the hot coolant pipes. The remainder of the emergency coolant is introduced by the cold cooland pipes in the lower part of the pressure vessel. (DG)

[en] This invention concerns a recirculation sump for the safety and spraying injection systems of a nuclear reactor, specifically for making up safety devices for a pressurized water nuclear reactor

[en] The invention concerns a device for monitoring the pipelines of an emergency cooling system of an LWR nuclear reactor outside the safety containment for losses of emergency cooling water in the region between the circulating pump and the outer wall of the safety containment. (UWI)

[en] The invention relates to a new emergency cooling system and applies in particular to pressurized water power stations. It can work independently and in closed circuit for most of the cooling. This result is achieved by condensing some of the steam produced in an air condenser of which the operating energy is provided by another part of the steam, and the condensed water is recycled towards the emergency reserve

[en] The reactor plant operated with high temperature water surrounded with an airtight containment and with a multi-loop design includes a condensation device for the steam generated during faults. The condensation device contains an injector, cooling container and condensate collecting container. The injector has a supersonic nozzle, through which the steam/air mixture produced is introduced. (DG)

[en] An emergency cooling device for gas-cooled nuclear reactors is described containing a coolant gas loop, with a heat exchanger, running through the reactor core. In order to be independent of external power sources, a gas turbine driven by the circulating coolant gas is connected to the coolant gas loop. The coolant gas expanded by it descharges its heat in the heat exchanger, is compressed afterwards, and fed into the core again. The gas turbine drives the compressor and a circulation pump. The plant is described in detail. (HP)