摘要:
Die Erfindung betrifft Kondensationskammerkühlsystem, umfassend eine Kondensationskammer (42) für einen Siedewasserreaktor (46) und wenigstens einen außerhalb der Kondensationskammer (42) angeordneten Wärmetauscher (48). In der Kondensationskammer (42) ist ein längliches Kühlmodul (10, 54) vorgesehen, welches in seinem oberen Bereich einen Verdampfungsraum (12) umfasst, wobei das Kühlmodul (10, 54) derart in der Kondensationskammer (42) angeordnet ist, dass der Verdampfungsraum (12) oberhalb eines Höchstfüllstandniveaus (14) der Kondensationskammer (42) befindlich ist. Das Kühlmodul (10, 54) umfasst fernerhin wenigstens ein Steig- (18) und ein Fallrohr (20), welche mit ihren jeweiligen oberen Enden in den Verdampfungsraum (12) münden und mit ihren jeweiligen unteren Enden in der Kondensationskammer (42). Eine erste Druckleitung (56) ist vom Verdampfungsraum (12) zum Wärmetauscher (48) vorgesehen und von dort eine zweite Druckleitung (58), welche in der Kondensationskammer (42) unterhalb des Mindestfüllstandsniveaus (16) mündet. Somit ist durch die Kondensationskammer (42), die Druckleitungen (56, 58), das Kühlmodul (10, 54) und den Wärmetauscher (48) ein passiver geschlossener Kühlkreislauf gebildet.
摘要:
The method for filling water into and changing the air of a main circuit (1) of a water-cooled nuclear reactor includes a step (1) of placing a connecting and fluid insulation device (30) which is connected to a hot leg (3) of each cooling loop (11, 12) of the main circuit so as to substantially insulate, from inside the tank, the assembly of hot legs. The method also includes a step of injecting water through an injection circuit (50) on at least one hot leg (3) until each cooling loop is filled with water having changed the air from a steam generator (6) and until the water level (20) in the tank reaches above the side openings (21) of the tank that correspond to the loops (11, 12), after which the connecting device (30) is taken out of the tank. The connecting device (30) is capable of using telescopic connection elements (321).
摘要:
The invention relates to a method for protecting the components of the primary system of a boiling water reactor, especially against stress cracking corrosion, wherein a reducing agent is fed into the primary coolant in order to reduce the number of substances having an oxidising effect or in order to modify the electrochemical potential of the component surfaces covered with an oxide layer to negative values. According to the invention, an alcohol which can be oxidised in the conditions of a reactor is fed as a reducing agent, preferably in a liquid form, into the primary coolant, whereby said component surfaces are provided with a blank coating or a single intrinsic oxide coating.
摘要:
A method for operating a nuclear reactor may include adding one or more chemicals to water in the reactor prior to reactor shutdown, during reactor shutdown, or prior to and during reactor shutdown. The one or more chemicals may trigger release of one or more radioactive substances from at least one out-of-core surface of the reactor into the reactor water. A method for reducing post-shutdown radiation levels of a nuclear reactor may include adding one or more chemicals to water in the reactor prior to reactor shutdown, during reactor shutdown, or prior to and during reactor shutdown. The one or more chemicals may include, for example, one or more metals, metal ions, metal compounds, metals and metal ions, metals and metal compounds, metal ions and metal compounds, or metals, metal ions, and metal compounds.