LESSON 2 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
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)
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 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)
PIPING & INSTRUMENTATION DIAGRAM
is a document that is of interest only to the process engineer,
PFD
PIPING & INSTRUMENTATION DIAGRAM
in addition
to showing the process flow, combines piping and instrumentation
details as well.
piping and instrumentation diagram (P&ID),
PIPING & INSTRUMENTATION DIAGRAM
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.
P&ID
PIPING & INSTRUMENTATION DIAGRAM
AA
BB
CCC
DDD
EE
conveys the line size
indicate the service
pipe sequence number
pipe class
insulation type
PIPING & INSTRUMENTATION DIAGRAM
Lines are shown by an identification number such as AA”-BB-
CCC DDD- EE.
Line Numbering
PIPING & INSTRUMENTATION DIAGRAM
The numbering appears inside balloons
and consists of two elements.
Instrument Numbering
PIPING & INSTRUMENTATION DIAGRAM
is the fundamental
building block in industrial control
systems.
A control loop
is a diagrammatic representation of the distribution of utilities to
various consumers in a process plant. It is typically prepared to cover the
following utility hook-ups:
Utility P&ID,
is a PFD in which the
various sections of the plant are marked showing the specified
materials of construction.
Material Selection Diagram (MSD)
For established processes, this information along with information
on design temperature and pressures is enough for the _____ to select pipe classes.
piping
engineer
is a document predominantly generated by the process
engineer (with some inputs from the piping engineer). The line list
as a name implies that it is a list of all lines in a process plant.
Line list
as the name implies, is a list of equipment
(category-wise) along with broad specifications of each of the
equipment. The categories consist of vessels and columns, pumps
and compressors, reactors, heat exchangers, air coolers, package
items, etc.
equipment list,
PIPING & INSTRUMENTATION DIAGRAM
It consists of the
process sensor, the controller
function, and the final control
element (required for closed
loops)
Instrument Loops
