Purging 07
Purging 07 : The process of supplying an enclosure with clean air or inert gas at a specified flow rate and a positive pressure to reduce the concentration of any flammable gas or vapor initially present to an acceptably safe level and to maintain this safe level by positive pressure with or without continuous flow. Refer to 5.2.1 and 5.2.1.2 and definitions of Type X,Y, and Z purging
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