Hydrostatic test Calculation

Vab = Actual Volume Drained Va = [(0.89x(r/s) ) + A]x (Vr/1000) x (P1-P2)

where by P1 = Pressure in the pipe (Start of Holding) , Barg P2 = Pressure in the pipe (End of Holding) , Bar r = Radias of internal pipe ,mm s = Norminal wall thickness , mm A= Compressibility Coefficient (See table#1) Vr = Total volume of Test Section in the pipeline , m3

Accept Criteria 0.94 < (Vab/Va) < 1.06