WEEK 3 Flashcards
_____ are the visual way to show how a process is intended to run, the connections between the various unit operations and processes, and the connections with raw material and utility supplies.
Flow sheets
Types of flow sheets:
• Block Flow Diagram (BFD)
• Process Flow Diagram (PFD)
• Piping & Instrumentation Diagram (P&ID)
• Utility P&ID
• Material Selection Diagram (MSD)
• Line List & Equipment List
A _____ is normally not used for a particular unit but is used to represent a chemical complex where each process unit is represented as a block. It outlines the complete process complex in the form of blocks in proper sequence, joined by interconnecting lines showing the direction of flow of feed, intermediate products and final product along with by- products, if any.
Block Flow Diagram (BFD)
A _____ is the key document in describing a process. Such diagram is read in conjunction with the process description and in addition contains stream details which are linked to the heat and material balance of the process.
Process Flow Diagram (PFD)
The _____ combines piping and
instrumentation details as well. It is the basic document used while the plant is under the engineering phase, through construction, pre-commissioning and all the way to start-up and operation.
piping and instrumentation diagram (P&ID)
P&IDs two variants
• basic engineering level
• detailed engineering level
_____ are shown by an identification number such as AA”-BB- CCC DDD- EE.
Line Numbering
conveys the line size
AA
indicate the service
BB
pipe sequence number
CCC
pipe class
DDD
insulation type
EE
The numbering appears inside balloons and consists of two elements. The element at the top portion of the balloon consists of between two and four letters which define the function of the instrument, viz., flow indication, pressure control, etc. The element at the bottom portion of the balloon indicates the sequence number of the instrument.
instrument numbering
A control loop is the fundamental building block in industrial control systems. It consists of the process sensor, the controller function, and the final control element (required for closed loops)
instrument loops
_____ is a diagrammatic representation of the distribution of utilities to various consumers in a process plant.
Utility P&ID
Utility P&ID is typically prepared to cover the following utility hook-ups:
• Cooling water
• Steam and condensate
• Plant air and instrument air
• Fuel oil and fuel gas
• Nitrogen
• Flare system
A _____ is a PFD in which the various sections of the plant are marked showing the specified materials of construction. In addition, corrosion allowances and sour service requirements are also mentioned. This includes lines as well as equipment.
Material Selection Diagram (MSD)
_____ is a document predominantly generated by the process engineer (with some inputs from the piping engineer).
Line list
An _____, as the name implies, is a list of equipment (category-wise) along with broad specifications of each of the equipment.
equipment list,
