Reply To: Oxygen freeing of hydrocarbon lines

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#497
Nasir Hussain
Keymaster

Oxygen freeing is carried out by Nitrogen purging.
Initially, the lines or vessel or circuit is pressurized upto maximum Nitrogen pressure to perform leak test.
Then circuit is pressurized and depressurised to remove oxygen and is monitored at designated points.
The process continues until Oxygen is reported below 0.5 %.