Method and device for locating and off of water vapor - by in the casing of a bending exchanger warmth

摘要

The present invention concerns an improvement to the method for detecting a steam micro-leak in a heat-exchanger having circulation tubes surrounded by an alkaline/molten/metal (e.g. liquid sodium), said improvement consisting in using the normal operating fluid of the exchanger (in particular, water) as the hydrogenated tracer fluid, in injecting an inert gas successively into groups of tubes comprising at least detecting device (which is based on the measurement of hydrogen, in particular in sodium) until a zero reading, indicative of the leaking tube, is observed.