Measuring and testing – With fluid pressure – Leakage
Reexamination Certificate
2011-07-12
2011-07-12
Larkin, Daniel S (Department: 2856)
Measuring and testing
With fluid pressure
Leakage
C073S040000
Reexamination Certificate
active
07975529
ABSTRACT:
A method of discovering leakage in a heat exchanger, wherein the method is carried into effect on an intact heat exchanger which, together with surrounding conduits, is filled with water. The heat exchanger preferably has requisite pressure indicators mounted between each section, as well as requisite shut-off valves. The method comprises applying in each section of the heat exchanger an excess pressure on one side which is enclosed there, while the other side is at normal pressure. The pressure is enclosed during a period of time and is monitored during this period of time.
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English language translation of Japanese Office Action issued Aug. 24, 2010 by the Japanese Patent Office in corresponding Japanese Patent Application No. 2008-543236.
Gustafsson Mats
Leufstedt Max
Buchanan & Ingersoll & Rooney PC
Larkin Daniel S
Tetra Laval Holdings & Finance S.A.
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