FLOW SHEETS 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
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 in proper sequence,
joined by interconnecting lines showing the direction of flow of feed, intermediate products and final product along with by- products,
Block Flow Diagram (BFD)
It 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)
It is a document that is of interest only to the process engineer, the piping and instrumentation diagram (P&ID), in addition
to showing the process flow, combines piping and instrumentation details as well.
PIPING & INSTRUMENTATION DIAGRAM (PFD)
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 & INSTRUMENTATION DIAGRAM(P&ID)
P&IDs generally come in two variants:
(1) the basic engineering level document and
(2) the detailed engineering level
document.
Lines are shown by an identification number such as AA”-BB-
CCC DDD- EE.
Line Numbering
The numbering appears inside balloons and consists of two elements.
;element at the top portion-two and four letters which define the function of the instrument
;element at the bottom portion-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
Instrument Loops
It is a diagrammatic representation of the distribution of utilities to
various consumers in a process plant.
Utility P&ID
It is a PFD in which the
various sections of the plant are marked showing the specified
materials of construction.
Material Selection Diagram (MSD)
it is a list of all lines in a process plant; Each line is listed with its size, pipe class, sequence number,
operating and design conditions…..
Line list
as the name implies, is a list of equipment (category-wise) along with broad specifications of each of the equipment.
Equipment list
