The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 1976
Filed:
Aug. 19, 1974
Applicant:
Inventor:
Alain Brachet, Orsay, FR;
Assignee:
Electricite de France (Service National), Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 40 ; 73 4 / ; 73 407 ; 165 11 ;
Abstract
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.