Abstract: A suction sieve has a cylindrical sieve body made up of several annular, modular cassette elements that are axially spaced apart and coupled to one another. The cassette elements surround a central suction chamber and are clamped together between an end plate that covers the suction chamber and a flange for connection to a suction line of a cooling water pump. Each cassette unit is formed of two annular, perforated side wall sections and several perforated wall segments that are circumferentially spaced apart and arranged between the side wall sections. The perforated wall segments and the side wall sections form sieve pockets that essentially extend in the radial direction and open toward the outer periphery of the sieve body so that water can flow through the sieve pockets in all directions. Discharge gaps extend in an essentially radial direction, open into the suction chamber, and are formed between the sieve pockets and between the cassette units.

Abstract: The valve comprises a first pressure chamber (2), an outlet chamber (6) and a valve body (8), cooperating with a first valve seat (12), and also a second pressure chamber (13) delimited by the valve body. The valve body (8) comprises a control piston (22) which cooperates with a second valve seat (26) and is movable between a closing position and an open position. The control piston delimits in a valve chamber (17) a first sub-chamber, which faces away from the second valve seat (26) and communicates with the first pressure chamber (2), a second sub-chamber, which faces the second valve seat (26) and communicates with the outlet chamber (6), and a middle sub-chamber, which surrounds the cylindrical surface of the control piston and communicates with the second pressure chamber (13). The control piston (22) establishes in the closing position transfer communication between the first and the middle sub-chamber, and in the open position transfer communication between the second and the middle sub-chamber.

Abstract: The apparatus is provided with a line (1) connected to the containment for feeding air to a water bath (5). The line (1) is connected to plurality of nozzles (4) disposed in the water bath (5) having at least one perforate baffle plate (27) disposed above said nozzles. A set (6) of static mixing elements (30, 31, 32) surrounded by a jacket (7) is disposed above said baffle plate (27). A dry separating stage is disposed above the water bath (5) and the set (6) and consists of an entry separator (8) and an agglomerator (9) which are in the form of annular discs. Air emerging from the set successfully flows through the entry separator (8) and the agglomerator (9) in opposite directions. The entry separator (8) and the agglomerator (9) consist of static mixing elements.

Abstract: The reactor pressure vessel comprises a pipe socket (2) connected to a feed-water supply line (3), in which is disposed a coaxial protective sleeve (5) (thermal sleeve) which expands with changes in temperature. With its outer end the protective sleeve (5) slidably abuts the pipe socket (2) and with its inner end it is connected to a feed-water distributing ring situated in the vessel. A pipe section (10), in which bellows (15) are disposed, is inserted between the outer end of the pipe socket (2) and the feed-water supply line (3). With one end the bellows (15) are tightly connected to the outer end of the protective sleeve (5) and with their other end they are tightly connected to the pipe section (10).