Thought Questions

Open Ended Problems

1. How fast can the following systems respond?  What limits the "performance" of each system?


a.  A fire engine in response to an alarm.

b.  A company to a message that stores want more of their products.
c.  Your friends to news that a party is downstairs.











Some control must respond rapidly because the goal is safety.


a. Discuss some common safety concerns in a process plant.

b. For each item in (a) above, determine a valve (final element) that would have a rapid effect and provide good control for safety.