1617 Semester 2 Chemical Engineering Drawing Instructor Rama

16/17 Semester 2 Chemical Engineering Drawing Instructor: Rama Oktavian Email: Oktavian. rama 2@gmail. com Office Hr. : M. 10 – 12, T. 10 – 12, W. 09 – 10, F. 10 – 15

Outlines 1. Chemical piping system 2. Piping system symbols 3. Piping instrumentation 4. Pipe drawing

Chemical piping system The term piping can refer to any kind of pipe used in a wide range of applications. Piping is used to transport fluids between storage tanks and processing equipment is called process piping.

Chemical piping system Types of Pipe Steel Pipe: Carbon steel pipe is the preferred above ground pipe used in industry today. It is strong, relatively durable and can be welded and machined. Copper pipe: and copper alloys are corrosion resistant and have excellent heat transfer properties. Often used in residential water lines, however, plastic pipe is becoming more prevalent in residential water lines. Plastic Pipe: PVC (Polyvinyl Chloride) pipe is used for acids, salt solutions, alcohols, crude oil and other corrosive chemicals. PE (Polyethylene) is used for higher temperatures (up to 105 degrees F) and is suitable for water lines, sprinkler systems etc.

Piping system symbols

Piping system symbols

Piping instrumentation How to connect pipe? ? • Welded – Butt-welded – Socket-welded – Solvent-welded • Screwed • Flanged • Soldered • Bell and spigot

Piping instrumentation How to connect pipe? ? Welded joints

Piping instrumentation Pipe fittings Enable pipe to change direction and size Provide for branches and connections Types Welded Screwed Welded Fittings

Piping instrumentation Pipe fittings Screwed fittings

Piping instrumentation Piping Insulation Prevent heat loss/ gain Prevent condensation – below ambient Personnel protection – over 125 o. F Freeze protection – outdoor cold climates Fire protection Noise control

Piping instrumentation Piping Insulation Fiberglass Insulation w/ Asbestos plastered fitting coverings

Piping instrumentation Piping Insulation Metal Jacketed insulation covering

Piping instrumentation Valves • Purpose – Provide on/off service – Control and regulate fluids – Maintain constant pressure – Prevent pressure buildup – Prevent backflow

Piping instrumentation On/Off Valves • Gate – Exclusively provide on/off service – Fluid flows with minimal friction and pressure loss – Used to block flow

Piping instrumentation Regulating Valves • Globe – Regulates pressure – Used to regulate flow

Piping instrumentation Backflow Valves Check Valves: Used to prevent backflow Piston check

Piping instrumentation Safety Valves Keep pressures at or below a given point

Piping instrumentation Ball Valve Typically used as block valve Cut-away shows ball and seat

Piping instrumentation Butterfly Valve Can be used for flow control or on/off

Piping instrumentation Control Valve Instantaneous control and adjustment Flow Pressure Temperature Contains a controller, or actuator Operation Electric motor Air or hydraulic cylinder

Piping instrumentation Valves symbols

Pipe drawings Double- and Single-Line Drawings

Pipe drawings Piping Drawings Requirements q Pipe length dimensions q Location of fittings and valves q Size and type of valves and fittings q Pipe diameter, contents, and identification number

Pipe drawings Piping Details

Pipe drawings Piping Isometric

Pipe drawings Piping Isometric

Pipe codes Organizations for Piping Codes ASME - American Society of Mechanical Engineers, one of the leading organizations in the world developing codes and standards ANSI - American National Standards Institute, provides a forum for development of American national standards DIN - Deutsches Institut für Normung (Germany) ISO - International Organization for Standardization

Pipe codes ASME Codes B 31. 1 – Power Piping B 31. 2 – Fuel Gas Piping, WITHDRAWN superseded by ANSI Z 223. 1 B 31. 3 – Process Piping, (formerly Chemical Plant and Petroleum Refinery Piping) B 31. 4 – Liquid Hydrocarbon Transportation Piping (oil cross country pipelines) B 31. 5 – Refrigeration Piping B 31. 6 – Chemical Plant Piping, never issued as a separate document, folded into B 31. 3

Pipe codes ASME Codes B 31. 7 – Nuclear Power Piping, WITHDRAWN, superseded by ASME Code, Section III B 31. 8 – Gas Transportation Piping (cross country gas pipelines) B 31. 9 – Building Services Piping (office building hot water heating and air conditioning) B 31. 10 – Cryogenic Piping, never issued as a separate document, folded into B 31. 3 B 31. 11 – Slurry Transportation Piping (cross country coal/water slurries)

Pipe codes The following division of the codes is done on the type of piping Aboveground codes Buried codes B 31. 1 B 31. 4 B 31. 3 B 31. 8 B 31. 5 B 31. 11 B 31. 9