MEP201 Mechanical Engineering Drawing 1 st semester S R Kale Lecture Piping Drawings

Piping (2005)2 Piping drawings Pre-requisites Schematic, P&I drawings Equipment G.A. drawings Layout drawings Restrictions Space (X, Y, Z), movement Piping outputs B.O.M. for piping fabricator Hangers, anchors/foundations, trenches

Piping (2005)3 Francis Turbine – Lube Oil Piping (1) L.O. TANK BRG L.O. TANK BEARING Z X Y SCHEMATIC

Piping (2005)4 Information Requirements Position of each equipment (L.O. tank, Bearing block, pump : floor plans, elevations) G.A. drawing of each equipment (type, size & position of piping connections) Civil requirements (beams & columns, walkway, maintenance) Electrical requirements (panels, cable trenches) Other pipes in the area

Piping (2005)5 Piping Joints  Threaded Accuracy (?), Metal/plastic. Plumbing  Flanged Industrial pipes, low/medium pressure and temperature. Metal/Plastic. Steam, oil, water,  Welded Permanent; High pressure and temperature. Industrial, Water, steam, oil, chemicals, Water supply, sewage, large hydro - Concrete

Piping (2005)6 Piping Joints Threaded / Flanged / Welded

Piping (2005)7 Piping Joints Threaded / Flanged / Welded

Piping (2005)8 Pipe - Flanged connection PIPE-FLANGE WELDED or SCREWED PIPE 2 PIPE 1 FLANGE 1FLANGE 2 GASKET BOLT-NUT

Piping (2005)9 Pipe - Flanged connection

Piping (2005)10 Piping Joints Threaded / Flanged / Welded

Piping (2005)11 Piping Joints

Piping (2005)12 Piping Bends Tee (T)Short Radius (SR) Elbow Long Radius (SR) Elbow Radius/Pipe dia. ratio Hydrodynamics. Space.

Piping (2005)13 Piping : Vents, Drains & Supports Vents : Location, accessibility, outlet Drains : Location, accessibility, collection, funnel, Supports : Anchor/foundation, hanger Thermal expansion Pipe weight Surges, water hammer Equipment vibrations Seismic

Piping (2005)14 Francis Turbine – Lube Oil Piping (2) L.O. TANK BEARING

Piping (2005)15 Piping – Plan & Elevation (1) ISOMETRIC PLAN ELEVATION

Piping (2005)16 Piping – Plan & Elevation (2) ISOMETRIC PLAN ELEVATION

Piping (2005)17 Piping – Plan & Elevation (3) ISOMETRIC PLAN ELEVATION

Piping (2005)18 Pipe supports  Foundation  Hanger  Rack  Clamp  Underground – foundation  “Rigid” - anchor vs. “flexible” allows pipe to move  All along pipe length (at regular intervals?)

Piping (2005)19 Pipe support - Hanger

Piping (2005)20 Piping Examples Oil pumping station, Central A.C. system,

Piping (2005)21 Piping – How things go wrong  Power plant steam turbine – steam pipe under lube oil pipe.  Hostel – drinking water pipe and sewage pipe too close.  Automobile – brake oil leak on alternator.  Pipes running into beams, columns, walls, …  Pipe centerline O.K. (?) but insulation fouls with walls/ceiling.

Piping (2005)22 Lecture summary Using schematics/P&I diagrams make piping drawings (routing), to scale, with material and other specifications (e.g. standards) NEXT STEP : Piece-wise design and manufacture of pipes, joining details, and their supports,