THANGLONG

PROCESS CALCULATION

Client:LAMSON JOCProject:PROVISION OF THANG LONGCHEMICAL INJECTION SKIDCalculation Title: Regulator Valve Calculation for Chemical Injection SkidRegulator Calculation for IRCD of Chemical Injection SkidCalculation No.:OGPE-CS-PCV-XXXXSheet No.:1of1REGULATOR CALCULATION1Tag No.:PCV-66042/46/52/56/62/66/72/76/82/86/92/96Service:Pour Point Despressant (liquid)2P&ID No.:CISP-ZZZZ-2AAP-D01-00723FLUID PROPERTIES4Calculation StandardAccording to Masoneilan Calculation Method5CaseCase 1 (Minimum Flowrate)Case 2 (Normal Flowrate)Case 3 (Maximum Flowrate)6Flowrateqlitre/hr0.164.338.57Wkg/hr0.14563.94037.7358Vapor Pres of Liquid at Flowing TempPvkPaa4.44.44.49Specific Gravity at Flowing TempGf0.910.910.9110Liquid Densityrkg/m391091091011Liquid ViscositymcP59.1559.1559.1512Source PressureP1kPag46194619461913Source TemperatureT1oC40404014Sink PressureP2kPag40374037403715Upstream Static HeadH1m00016PH1kPa00017Downstream Static HeadH2m22218Pres at Thermodynamic Critical PointPH2kPa17.83617.83617.83619Differential PressureP1 - P2kPag58258258220Differential Static HeadPH1 + PH2kPag17.83617.83617.8362122FRICTION LOSS CALCULATION23Upstream24Piping and FittingkPa20020020025OtherkPa00026Upstream Friction LossW1kPa20020020027Downstream28Piping and FittingkPa15015015029OtherkPa00030Downstream Friction LossW2kPa15015015031Total Friction LosskPa3503503503233SIZING DATA34Critical Flow Factor(Note 1)Cf0.750.750.7535Control Valve Inlet PressureP3kPag44194419441936Control Valve Outlet PressureP4kPag4204.8364204.8364204.83637Pressure DropDPkPa214.164214.164214.16438(Note 2)DPskPa4414.64414.64414.639Cf2DPskPa2483.21252483.21252483.212540The Flow is SubcriticalThe Flow is SubcriticalThe Flow is Subcritical41Valve Sizing CoefficientCv0.0001210.0032740.00642742Notes:431.The Cf of 0.75 is chosen in this stage because that number is in the middle of the full range of Cf. One the Cv and manufacturer are detimined,44we can enter the correct Cf value.452.When Pv < 0.5 P1, DPs = P1 - Pv46

A29-Mar-12Issued For ReviewRev.DateDescriptionOriginatedCheckedApprovedClient