Document oeMbpDq2rJ92L2q7Lrawn4wro

From: (c RELIEF VALVE DISCHARGE CALCULATION NORTH VCM CHARGE FILTER - REACTOR MODULE NO. LIQUID DISCHARGE 12:30 P.M. - NOVEMBER 5, 1981 1 Teledyne Farris Safety Relief Valve Sizing Bulletin FE-336, page 3.1 38.0 Kd Yl.25 P^ - P' Kp Ku Where: A = Effective Orifice area, in. 2 = 0.098 in. 2 V^ - Relieving Rate, gallon per minute G = Specific Gravity, =0.9 Kd = Coefficient of Discharge = 0.64 Kp = Liquid Capacity Correction Factor, for 4% overpressure = 0.32 Ku = Viscosity Correction Factor = 1.0 = Set Pressure at Inlet, psig = 275 psig ?2 = Back Pressure at Outlet, psig = 0 psig Then: V, = (0.098) (38) (0.64) \/l. 25 x 275 - 0 'Yo79~ (0.32) (1.0) = 14.9 gallons per minute Vinyl chloride discharged in 10 seconds = 14.9 gallon X 7.5 pound X 1 min. X 10 sec. = 18 pounds VCM min. gallon 60 sec. DTH 000084016 RELIEF VALVE DISCHARGE CALCULATION NORTH VCM CHARGE FILTER - REACTOR MODULE NO. VAPOR DISCHARGE 12:30 P.M. - NOVEMBER 5, 1981 1 From: Teledyne Farris Safety Relief Valve Sizing Bulletin FE-336, page 31 tra = w {z~ C Kd P VM Kb Where A W T Z C Kd M Kb P 2? = Effective Orifice Area, in. = 0.081 in. (Valve orifice area assumed to be one-half plugged) = Relieving Rate, pounds per hour = Inlet Temperature, R = 460 +74 = 534R = Compressibility Factor = 0.92 = Gas Flow Constant = -0.92 3/5" = Coefficinet of Discharge = 0.95 = Molecular Weight = 62.5 = Back Pressure Correction Factor = 1 = Relieving Pressure, psia = 54.4 psia (Vapor pressure of VCM @ 74F) Then: W= (0.081) (315) (0.95) V534 \J0.92 (54.4) V6275 (1) = 475 pounds per hour Vinyl chloride discharged in 9 minutes = 475 pound x 1 hr. x 9 min. = 71 pounds VCM hr. 60 min. DTH 000084017