Abstract: A device that enables storing in a vessel a fluid at high temperature, in which the fluid is under a coverage gas. The tank has a lower concave head and intermediate zone made by cylindrical rings generated by revolution bodies around the central vertical axis, which contains the level of high temperature fluid that is required to store, and an upper closure made up by an upper head with low altitude to diameter ratio to contain the coverage gas, and supported by the intermediate zone.

Abstract: A compact pressurized water nuclear reactor having connected to the reactor pressure vessel a plurality of horizontal pressure vessels, with all the horizontal pressure vessels connected to the reactor pressure vessel by a single connection between the respective nozzle of the reactor pressure vessel with the respective nozzle of each horizontal pressure vessel.

Abstract: This invention presents a new device to produce images of the gamma field, specially designed for circumstances requiring high efficiency and fast response imaging, by applying the concept of image extraction within a given field of view, through the combination of efficient gamma radiation detectors. Each detector is located inside a shielding, with an area of the detector with no shielding to enter the incident gamma radiation detector with a plurality of angles in relation to the normal outgoing central axis to the surface of the detector through the unshielded area, where that central axis is divergent in relation to the outgoing central axes of neighboring detectors.

Abstract: It is a system and method for the monitoring of the illicit traffic of fissile materials that can be used for the construction of nuclear bombs or not fissile that can be used for the construction of radiological dispersion devices; characterized by reducing the rate of spurious detection and increase the probability of detection compared with equivalent devices of the prior art. Some of its embodiments include the use of a radiation detector/telemeter ensemble with manual or automatic pointing and an ensemble of radiation detector/camera with an automatic object tracker along with data acquisition and processing electronics; which allow the calculation of the correlation between the characteristic profile produced by the MO and a predicted reference profile. The detection electronics includes a gamma spectrometer and processing electronics for compensating for the shadow shielding effects.