Abstract: Modular ultrafiltration device for the cooling liquid of a nuclear reactor, comprising a radiation absorbing containment (1), an ultrafilter (15) arranged in the containment (1), a heat exchanger (32) placed in the containment (1), and connection pieces intended for the various parts of the ultrafilter (15) and heat exchanger (32) and passing through the wall of the containment (1) in a leak-proof manner. A heat-insulating material (41) fills the inner volume of the containment (1). The modular device can easily be connected to an auxiliary circuit of the nuclear reactor. The ultrafiltration wall can be replaced without any difficulty.

Abstract: Device for the ultrafiltration of a pressurized high-temperature liquid, having, inside a pressure resistant casing (1), a second casing (11) to which are fastened tube plates (15,16) carrying tubes (14) forming an ultrafiltration wall, and a first set of partitions inside the second casing (11) for channelling the flow of the filtrate. A second set of partitions (27) arranged in the casing (11) above the upper tube plate (16) and partitions placed in the casing (1) underneath the lower tube plate (15) make it possible to channel the fluid to be purified and the concentrate. The part of the filter which incorporates the tubes (14) can easily be removed. The fluid circulates at a constant rate in all parts of the filter.

Abstract: Ultrafiltration circuit for the primary cooling fluid of a pressurized-water nuclear reactor, comprising a first loop (27) taken off from the discharge branch (10) of the volumetric and chemical monitoring circuit (8) and a second loop (28) taken off from the charge branch (11) of the circuit (8). Each of the loops (27, 28) incorporates an ultrafilter (30, 50). The concentrate from the ultrafilter (30) located on the first loop (27) is cooled, depressurized and conveyed into the chemical monitoring circuit (8) via a pipe (38) downstream of the main cooling and depressurizing device (12, 13) of the circuit (8). The concentrate from the ultrafilter (50) of the loop (28) is conveyed into the chemical monitoring circuit (98) via a pipe (58) upstream of the device (12, 13).

Abstract: A machine for the manufacture of twisted pastry bars comprises coplanar and spaced-apart supply and discharge belts, the supply belt being advanced intermittently to convey a strip of dough to a cutting station where the strip is cut into successive, transversely extending ribbons. Pairs of facing upper and lower conveyor belts are positioned between the supply and discharge belts, the conveyor belts defining therebetween a coplanar bed for conveying the successive ribbons to the discharge belt which supports and removes the twisted bars. While the ribbons are entrained by the facing conveyor belts, they are gripped at spaced positions against transverse displacement.