SEDL / STP / STP223-EB / STP42009S

Helium Leak Detection Techniques

Pappin, W. H.
Knolls Atomic Power Laboratory, General Electric Co., Schnectady, N. Y.

Pages: 11    Published: Jan 1958

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Abstract

This paper describes an effective nondestructive test—the helium tuned mass spectrometer, otherwise known as the leak detector. It is a practical, relatively inexpensive, very accurate, and convenient nondestructive test. It is gaining popularity in many fields where leaktight joints are important. The field of leak detection is wide and varied. Several methods and techniques are used in the atomic reactor field to ensure leak tightness in large and small systems from fission gases or radioactive coolants. The leak detector is selective and can locate large and small leaks in the same system. It is fairly simple to operate; however, the application and evaluation of the test require skill.