What are the three principal types of diagrams used by process engineers to describe

the flow of chemicals in a process? On which of these diagrams would you expect to

see the following items?

a$.$ The temperature and pressure of a process stream

b$.$ An overview of a multiple$-$unit process

c$.$ A major control loop

d$.$ A pressure indicator

e$.$ A pressure$-$relief valve

A problem has occurred in the measuring element of a level$-$indicating controller in a

batch reactor. To what principai diagram should you refer in order to troubleshoot

the problem?

Why is it important for a process engineer to be able to review a three$-$dimensional

model $($actual or virtual$/$electronic$)$ of the plant prior to the construction phase of a

project?