Helium sniffer testing :

The helium sniffing leak test is a method that uses helium as a tracer gas in combination with instrumentation that can detect presence of helium in the environment and more specifically an increase in helium due to a leaking part.
Generally sniffer leak detection is used to locate leaks in parts or systems so that they can be identified and where possible repaired. This test method is not quantitative as it is the skill of the operator that can determine whether a leak is found.

Typical Helium Sniffing Leak Test Procedure
1) Seal any ports or openings on the test part, leaving a single port for filling / charging with helium
2) Evacuate the internal volume of the part (if possible)
3) Fill / charge the internal volume with helium. Only a small pressure is required, e.g. 23 psig
4) Scan the test part checking for leakage
5) Vent the internal volume outside the test area to avoid helium build up and contamination
6). Remove any fixturing and connectors
7). Make sure that the gas left in the part being tested does not contaminate by releasing into the background


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Description: This Channel always discusses the Quality, inspection and construction perspective of construction of pipelines and similar topics. Time to time we discuss the related basic knowledge, physics or science to help understanding the mani topics in details.


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