CS238889B1 - Zariadsnis prs detektur prechrdostnosti vyhoratenych fuel cells of the core reactor - Google Patents

Abstract

Apparatus for detecting the permeability of spent nuclear fuel cell cartridges in a hot chamber. The permeability of the spent fuel cell cartridges before their drying without disassembly, eventually the packaging of the packaging tube. The application specifies a device for determining the continuity of spent fuel cell cartridges using a pressurized medium and a vacuum in a hot chamber, characterized in that it comprises a filling device (2) hermetically connected to the lower part of the fuel cell (6) above the sealing element ( 3) and a split guide cap (1) connected to the upper part, wherein the finishing element (3) together with the filling device (2) are connected via a valve (8) and a flow meter (25) to the collector (22) which is on a pressure medium supply with a control valve (11), a vacuum gauge (12), a valve (13) and a shut-off valve (14) a safety valve (15) and a pressure gauge for vacuuming are provided on the collector (22) (16). The invention finds use only in the core power industry.

Description

238889

The invention relates to a device for detecting the passage of spent fuel cartridges of a core reactor in a nuclear power plant by means of a process and technological process, using a vacuum or a high pressure chamber in a hot chamber to determine permeability.

The prior art did not consider at all to ascertain the permeability of fuel cartridges, which would have a very negative impact on their preparation for fuel disposal and transport. Because of the impermeable plugs in the interstitial spaces of the non-orbiting fuel cells, much of the fuel cartridges. Above these stoppers, there remains a coolant that does not leak out of the cell. Such cells cannot be methrometized and transported for longer. It will be necessary for all fuel cells to determine their throughput and to classify them as transient and impassable. Intermediate can be further processed, impassable samusia suitable method to pass.

In essence, a device for detecting the passage of the fuel cell fuel cell cartridges using a pressure medium or a vacuum in a hot chamber consists of a filler hermetically connected to the bottom of the fuel cell above the sealing element and a split rectifier connected to the top, wherein the sealing element together with the filler is connected to the valve and the flow meter is connected to the inlet pressure medium and provided with a control valve. The vacuum collector is also equipped with a vacuum gauge, a valve and a pressurization valve, a pressure relief valve.

The device for detecting the throughput of the fuel cells will achieve both their separation into through-pass, impassable and partially passable. This has the effect of avoiding the failure of the fuel cells, or their smoother drying, coupled with energy savings. Drying operations in the drying stand are also saved with the through-pass cells, which are simultaneously heated in the hot chamber when the throughput is detected. After certain treatments, the carbon black can also hermetically seal the impervious fuel cells. Preventing damage to the impermeable cells, which would be dried in the drying stall, because it did not control the passage of the fuel cells. Saving operations for transient and non-transient cells. Saving operations in a drying stall is canceled.

The attached drawing shows an example of a device for detecting fuel cell passages in a hot chamber.

In the figure, the article 6 is inserted into the chamber box, on which is mounted a divided rectangular lid 1 on the upper part of the fuel cell 6. At its bottom is the connection of the cell 6 by means of the filling device 2. Sealing of the article 6 The intercooler and the wrapping tube are transferred to the sealing element 3. For the collection of possible wetted moisture below the cell 4, the process control, the regulation and the visual control of the cell throughput is carried out by the conduit 5 from the operator. The dotted arrows indicate the vacuum route and the continuous pressure line. In the left-hand side of the drawing, the space of the heater chamber box is shown, although it will be transiently guided and is under a constant vacuum of 60 pPa. On the right, the room is operator-operated, the staff will control the entire process, regulate and control the throughput of the cells. Existing lead windows 23 are shown in the figure, and operations are performed to mount the 1, 2, 3, 4, 4-way controls and other operations.

A particular embodiment of the invention is based on the blowing of either the compressed air through the cell 6 on the side of the collector 20, or, on the contrary, the suction of the air from the packer 2. on which a hose 18 will be connected, whereby the pressurized valve 11 will be fed from the collector 22, and after closing the valve by the valves 11 and 14 and the valve 13 will again be exhausted from the cell and in the supply hose 18 and on the contrary, in the space of the claw 20 up to the measuring vacuum 12, there will be a vacuum. In the compressed air test, the cell 6 is blown through the direction of the trap 20 from the bottom of the cell 6 through its bundled fuel rods and blown through the hot chamber space if the cell is passed through the capsule housing 24 below the split guide cap.

In determining the permeability of the fuel cells, ie by using a propellant in the chamber, the flow direction of the medium is thin; also sound signaling. The sound signaling will be solved by means of a signaling sensor 19 installed on the split rectifier lid 1. From this sensor 19, for example, the whistle will pick up an audible signal in the chamber of the chamber existing microphone 9 and transmit it to the operator via the apparatus-on the loudspeaker 10. This signalization is only indicative. Under the fuel cell 6, the container 4 for collecting any possible moisture will be a cooling medium, part of which may remain in the cell.

Claims (2)

238889 koch after being pulled out of long-term chili. All operations will be carried out at a distance and in the distance. Proceeding with the work will be that after putting Article 6 into the Jio-chamber, it will switch to its own body. A baffle cap 1 is mounted on the housing of the head 24 of the article 6. The guide wing catcher 20 is attached to the bayonet by means of a manipulator filler 2. This fixture 2 can also be attached to the inside of the catcher. The flange of this jig 2 will be sealed by a gasket, by means of a screw or an eccentric by means of a clamp or manipulator. An air connection * 21 will be attached to the first pipe. This air will be connected via the valve 8 of the heater chamber and the collector 22 from the operetta. In determining the continuity of the cells through the pressurized air, the air will be introduced into the fuel cell 6 via the collector 22 via a ventilator 11. The air pressure will be controlled by a pressure gauge 16. Vacuum will measure the vacuum in the hot chamber by the existing vacuum meter. Adherence, complete impermeability, or determination of partial passage of fuel cells can be determined by the use of pressurized air by means of flowmeter 25a by means of an evaluation device, by means of a fuel cell test. 25 shows the acoustic signaling by means of a sensor 19 at a through or partially transparent cell. In this case, the vacuum in the hot chamber, measured and monitored by vacuum 17, will slightly decrease. The overflow of the optional 0.2 MPa pressure will also be checked by the safety valve 15. This will provide a quadruple control. In the case of a complete non-permeable cell 6, the acoustic signaling will not function, the vacuum in the hot chamber, measured by the meter 17, will not decrease, the flow meter 25 will not record any flow when the permissible pressure is exceeded. by vacuum, the valve (11) and (14) are closed, thereby relieving the clamp and opening the vacuum vacuum by opening the valve (13a). With the vacuum of the hot Icoxy vbox, the air is pumped out through the capsule housing 24 from the fuel cell G, and since the end of the cell G is heretically connected to the filler 2 connected to the conduit 18 and the vacuum 12, the vacuum meter 12 begins to register the corresponding fluid. No full value will be registered for a complete, impenetrable article. The suction valve could determine the degree of throughput in this abutment, but a suction valve would have to be inserted, but it could also be determined by the differential pressure across the vacuum 12 and 17 given the predetermined methodology on the fuel cell. Determining partial throughput with respect to operating needs is only very rough in both systems. These vacuum and overpressure systems are doubled, mutually interconnected, will be reversible and can be freely cycled without much additional operation. They are not, alternatively, necessary and advantageous for the operation function. They can be used alternatively very efficiently and, in addition to the detection of permeability, can be used in the pressurized manner first to partially or fully blow out the moisture from the fuel cells. Then, in determining the permeability of the vacuum, this is mainly used to dry the cells. Preparations and equipment will be the same for both systems. p REDME τ A device for detecting the passage of the burnt fuel cell cartridges of a core reactor using a pressure medium or a vacuum in a hot chamber characterized in that it consists of a filler (2) hermetically connected to the bottom of the fuel an element (6) above the sealing element (3) and a divided rectifying lid (1) connected to the upper part, wherein the sealing element (3) together with the filling device (2) are connected via a valve (8) and a flowmeter (26) on the collector (22), which is provided with a control valve (11) at the pressure medium supply, and a vacuum meter (12), a valve (11) and a pressure-relief valve (13) for vacuuming on the collector (22) 14), safety valve (15) and pressure gauge (16) 1 sheet of drawings