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Helium is used as a tracer because it penetrates small leaks rapidly. Helium also has the properties of being non-toxic, chemically inert and present in the atmosphere only in minute quantities (5 ppm). Typically a helium leak detector will be used to measure leaks in the range of 10 −5 to 10 −12 Pa·m 3 ·s −1.
One helium leak had been discovered prior to launch and deemed acceptable. “Helium is used in spacecraft thruster systems to allow the thrusters to fire and is not combustible or toxic ...
A tracer-gas leak testing method is a nondestructive testing method that detects gas leaks.A variety of methods with different sensitivities exist. Tracer-gas leak testing is used in the petrochemical industry, the automotive industry, the construction industry [1] and in the manufacture of semiconductors, among other uses.
The helium leak test uses helium (the lightest inert gas) as a tracer gas and detects it in concentrations as small as one part in 10 million. The helium is selected primarily because it penetrates small leaks readily, is inert and will not react with the test piece while having a naturally low quantity in air making detection less complicated.
A helium leak has delayed the launch of the Starliner’s crewed flight test mission with two NASA astronauts. Here’s the next opportunity to watch history in action.
The launch of Boeing's Starliner capsule is delayed indefinitely following detection of a helium leak in the spacecraft that will service the International Space Station.
Other services include vacuum drying, degassing, pneumatic testing, barrier testing, leak testing, decommissioning to mention but a few. On the pipeline process pre-commissioning side, there are various services such as chemical cleaning, helium leak detection, bolting, hot oil flushing, pipe freezing, foam inerting etc...
SpaceX’s historic Polaris Dawn mission was delayed by at least 24 hours on Monday after a helium leak, the aerospace company announced Monday night. The capsule, carrying four citizens, was ...
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