Control for nuclear reactor coolant suppressing radiolytic hydrogen@ generation

摘要

The invention pertains to a nuclear reactor with a cooling circulation for a liquid coolant, in particular water, into which hydrogen is to be introduced. The cooling circulation preferably comprises a volume equalisation container (6) for the coolant and at least one high-pressure pump (60, 62) which injects the coolant drawn from the cooling circulation back into the same circulation. The hydrogen injection point (38) is in the suction line (32) on the suction side of the high-pressure pump (60, 62). On the pressure side of the high-pressure pump (60, 62), a measurement line (82) is connected to the volume compensation container (6) or to a drainage system (94). A device (58) for measuring the hydrogen content of the coolant is incorporated in the said line (82). The measuring device (58) is connected via a regulating device (52) to a control valve (42) by which the hydrogen supply to the injection point (38) can be controlled. The gas-injection system ensures a clear and precisely maintained hydrogen content in the coolant.