PNEUMATIC TESTING
The process of pneumatic strength testing will use air or an inert medium to pressurize a system to 110% design pressure and a hold period is applied for a fixed amount of time. Oil and Gas industries use the strength testing technique to to prove the
mechanical strength and integrity of pressure containing components. The objective is to test a system above its design pressure. It is put to a safe subjection of its maximum operating pressure under its normal
use. When hydrostatic testing is not possible in cases like. The weight of hydrotest water is too high for pipe support system (gas service piping), introduction of water to the piping system is detrimental to the
process such as catalyst, reactor contamination, or cryogenic services system, etc.
Nitrogen is used to test the components or systems. It is a gaseous test with the ability to compress as well as contain a large amount of stored energy. It is typically 200 times greater than a hydrostatic test that holds the same free volume and pressure conditions. And extreme caution is required when using this technique. The System design specifications must be reviewed, and there will be a detailed risk analysis completed before testing with a compressible medium.
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