Accession Number : AD0911945

Title :   Incipient Leak Detection Using Radioactive Krypton 85.

Descriptive Note : Technical rept. Jan 71-Apr 72,

Corporate Author : EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD

Personal Author(s) : Dixon, Ponce D.

Report Date : JUN 1973

Pagination or Media Count : 29

Abstract : In this study, a method for detecting incipient leakage in stored munitions was investigated using an inert radioactive gas, krypton 85, as the inspecting medium. Krypton 85, a beta particle and gamma radiation emitter, pervaded small fissures and corrosion pits which progressed with time. When these defects came sufficiently close to the containers' outer surfaces, the relative attenuation of beta particles provided the mechanism for defect detection. Both simulated and natural corrosion were detected and measured in test standards. In a surveillance program, closed end-items were monitored from the time of fabrication, and natural corrosion pits were located and measured when pitting had penetrated less than 20% of the items' thickness in areas of interest. This process is considered to have significant potential for detecting incipient leakage. (Author)

Descriptors :   *KRYPTON), (*EXPLOSIVES, LEAKAGE(FLUID)), (*LEAK DETECTORS, CORROSION, NONDESTRUCTIVE TESTING, RADIATION MEASURING INSTRUMENTS, CRACKS, GEIGER COUNTERS, AUTORADIOGRAPHY, ELECTRONIC EQUIPMENT, BETA PARTICLES, ATTENUATION, DEFECTS(MATERIALS), RADIOACTIVE ISOTOPES, GAMMA EMISSION.

Subject Categories : Test Facilities, Equipment and Methods
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE