MOISTURE LEAKAGE CHECKUP SYSTEM FOR NPS PIPELINE Russian patent published in 2006 - IPC G21C17/00 G01M3/04 F17D5/02 

FIELD: checking nuclear power station equipment for leak tightness.

SUBSTANCE: proposed system designed for detecting leaks from pipelines carrying water coolant has device for air sampling and transport from air-penetrable heat insulation of pipeline under containment, passage in leak-tight shell of nuclear power station, and device for measuring air humidity incorporating humidity transducer and measuring-computing system; device for air sampling and transport from air-penetrable heat insulation of pipeline under containment is made in the form of pipe connection whose lower end is joined through shell hole with air-penetrable heat insulation of pipeline; air humidity measuring transducer is installed inside pipe connection in a spaced relation to inner side surface of pipe connection and is connected through electric passages by means of electrical communication lines to measuring-computing system.

EFFECT: enhanced speed of system response and reliability, enhanced safety of nuclear power station in operation.

6 cl, 5 dwg