SYSTEM OF MOISTURE CONTROL OF PIPELINE LEAK OF NPP Russian patent published in 2020 - IPC G21C17/00 F17D5/02 G01M3/04 

FIELD: monitoring and measuring equipment.

SUBSTANCE: invention relates to tightness control of equipment of nuclear power plants (NPP) and can be used for detection, localization and assessment of leak rate from pipelines of water-and-water power reactors. System of moisture control of pipeline leak of nuclear power plant includes device for selection and transportation of air from controlled volume, including at least one first pipe, device for measuring air humidity, which includes an air humidity sensor installed in the first branch pipe and a measuring and computing system connected to it with electric communication lines. As the controlled volume, the system uses a volume formed by a gap along the entire length of the pipeline between the pipeline and the inner jacket of the block heat insulation. Air bleeder and transfer device additionally includes at least one second branch pipe installed in the hole of block heat insulation so that its one end is connected to one end of the first branch pipe, and the cavity of the second connection pipe is interconnected with the controlled volume of the pipeline.

EFFECT: invention increases sensitivity of detection of a pipeline having a block type of heat insulation.

3 cl, 1 dwg