摘要:
The invention relates to a method for the detection of a leakage (30a, b) in a double pipe (2), wherein a medium (22) located in an intermediate chamber (10) between the interior (6) and exterior pipe (8) is moved toward a first end (16a) of the double pipe (2), whereupon medium (22) flows in from the second end (16b). On the first end (16a) the medium (22) is examined for any leakage (30a, b) of a characteristic material (7, 36), upon the detection (34) of which a leakage signal (34) is generated and a location (L1, 2) of the leakage (30a, b) is calculated based on the transport time (Tx) of the characteristic material (7, 36) from the leakage (30a, b) to the first end (16a) and based on the mass flow (Avi, Evi) of the medium (22). A corresponding device (4) contains a conveyor unit (18, 36) for moving the medium (22) through the intermediate chamber (10), a material sensor (28a, b) disposed at the first end (16a) for examining the medium (22) for the characteristic material (7, 36), a mass flow sensor (24a, b) at the first end (16a) for the medium (22), a control and analysis unit (32) for generating a leakage signal (34) and calculating of the location (L1, 2) of the leakage (30a, b) based on the transport time (Tx) and the mass flow sensor (24a, b).
摘要:
The invention relates to a method for conditioning a contaminated ion exchange resin, by mixing the same with water and at least partly breaking up the same into water-soluble components by means of an oxidising agent added to the water, wherein the resulting aqueous solution is immobilised with a binder, optionally after concentration by evaporation of water.
摘要:
The invention relates to a fuel element (100) for a boiling water reactor, having a multiplicity of fuel rods (102) which are combined to form a bundle and which stand with the lower end thereof on a lower holding plate (311), and having a fuel element base (101), the upper outlet opening of which faces toward the holding plate (311) and the lower inlet opening of which faces toward a lower core grate (201) of the boiling water reactor, wherein a flow duct (301) extends through the fuel element base (101) between the upper outlet opening and a lower inlet opening along a central longitudinal axis (A), which flow duct (301) is traversed by cooling water during operation, wherein the fuel element base (101) has a throttle element (302) which is spaced apart from the inlet and outlet openings in the direction of the central longitudinal axis (A) and which comprises an impact body (303) which is held centrally in the flow duct (301) by a plurality of webs (401) which extend transversely with respect to the central longitudinal axis (A), which impact body (303) occupies a part of the cross-sectional area of the flow duct (301).
摘要:
Eine Absperrarmatur (1) für ein Rohrleitungssystem (2) mit einem beidseits mit Rohranschlüssen versehenen Schiebergehäuse (4) und mit einem Absperrelement (6), das senkrecht zur Rohrleitungsachse (A) in eine Schließstellung einschiebbar ist, wobei das Absperrelement (6) ein Stellglied (8) und eine Anzahl von elastischen Dichtelementen (48, 50) umfasst, und wobei die Rohranschlüsse mit Sitzflächen (36, 38) für das Absperrelement (6) versehen sind, soll derart beschaffen sein, dass die erzielbare Sitzdichtheit auch bei und nach der Absperrung von hochenergetischen Fluidströmen erhalten bleibt. Dazu ist erfindungsgemäß der in der Schließstellung erzielte Abstand zwischen dem Stellglied (8) und den Sitzflächen (36, 38) derart ausgelegt, dass eine Verformung der Dichtelemente (48, 50), die deren Grenzen der Elastizität überschreitet, ausgeschlossen ist.
摘要:
The invention provides at least two electrochemical sensors positioned in a nuclear reactor or in a system adjacent to the nuclear reactor, wherein at least one of the at least two electrochemical sensors has a heated zirconium electrode, and the at least two electrochemical sensors produce voltages proportional to an electrochemical corrosion potential for a surface that each of the at least two electrochemical sensors are installed upon. The invention also provides an arrangement configured to accept the voltages produced by the at least two electrochemical sensors, wherein the arrangement is configured to determine an electrochemical corrosion potential of a zirconium fuel rod in the nuclear reactor based upon the voltages of the at least two electrochemical sensors.