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Piping guide 4 PIPING GUIDE A CHECK LIST FOR ISOMETRICS Line Nos Line Specs Start Point Location End Point Location Branch Connection Valve Accecibility Support Insulation For Insulated Line Only Instrument Connection Flow Arrow High Point Vent Low Point

PIPING GUIDE A CHECK LIST FOR ISOMETRICS Line Nos Line Specs Start Point Location End Point Location Branch Connection Valve Accecibility Support Insulation For Insulated Line Only Instrument Connection Flow Arrow High Point Vent Low Point Drain Hydro Test Vent And Drain Nozzle Connection Nozzle Nos Equipment Nos Coordinates And Elevations Iso North Bill Of Material Valve Tag Nos Instruments Tag Nos Contination Sheets Or Iso Nos Grid Location And Nos A DOCUMENTS FOR ISOMETRICS CHECKING Piping And Instrument Diagrames Piping Layouts Sectional Drawings Equipment Drawings Nozzle Orientations Piping Speci ?cation Suppotrs Standard Special Items Drawings Sress Analysis Report A POINTS TO REMEMBERS IN ISOMETRICS CHECKING Pump Suction Is Bigger Than Discharge Line Eccentric Reducer Flat Side Top Using For Pump Suction Line This Is Using For Avoid The Air Block In Pump Suction Pump Suction Line And Compresser Suction Line Keep Always Downword Position No Loops Permitted To Pump Suction Psv Outlet Always Rising Position Check The Valve Accesibility For Maitainance Purpose Valve Operating Height Min mm To mm From Floor Level Lift Check Valve Always Horizontally Using Swing Check Valve Verticaly And Horiontaly Using Control Station Operating Height mm To mm From Floor Level Shoe Not Required For Trunion Insulated Lines Headroom Clearance Minimum m From Ground Floor Level Dripleg Required For Steam Line Header Shoe Required For Insulated Lines Steam Chilled Water Brine Steam Condasate Shoe Not Required For Condansate Line When Line Will Be On Pipe Rack Nozzle Orientations Should Be Keep As Per Piping Requirement Avoid The Obstucles Keep A Piping Routing Neat And Clearly Control Stations Locates Side Of Near The Walls Or Columns Give A Trunion Supports To Control Station Both Side Of Control Valves Use A Dike Wall Around The Equipments For Avoid The Liquid To Spread In The Plant Area The Volume Of Dike Wall Is Times More Than Total Capacity Of Equipments Use Weldneck Flange For Pressure Piping CB TYPES OF CONTROL VALVE Pcv Pressure control Valve Tcv Fcv Lcv Xv Xcv Temperature Control Valve Flow Control Valve Level Control Valve Isolation Valve High Pressure Control Valve B TYPES OF PUMPS Reciprocating Pump Rotary Pump Centrifugal Pump Vacuum Pump Metering Pump B TYPES OF EXCHANGER Air Cooler Exchanger Plate Type Exchanger Shell Tube Exchanger Pipe Exchanger Spiral Exchanger B TYPES OF COMPRESSOR Elevated Centrifugal Compressor Grade- Mounted Centrifugal Compressor Reciprocating Compressor B TYPES OF TOWER Tray Tower Packed Tower Vacuume Tower B TYPES OF VALVE Gate Valve Globe Valve C Check Valve Non Return Valve Ball Valve Butter y Valve Diaframe Valve Plug Valve B TYPE OF FLANGES Weldneck Flange Flat Face Race Face Slipon Flange Do Lap Joint Flange Reducing Flange Screwed Flange Blind Flange Socketweld Flange Flat Face Flat Face Race Face B A PRESSURE TEMPERATURE RATTING B B FLANGES FACING Ff Flat Face Rf Raise Face T G Tongue And Groove Face M F Male And Female Faces Rtj Ring Type Joint Faces B TYPES OF FITTINGS Elbow Elbow Butt Welded Socket Welded Threded Equal Tee Reducing