Topic: Valve Response: Truth or Consequences?
Date: Tuesday, February 2, 2016
Time: Social Hour @ 6:00 p.m, Main Program @ 6:30 p.m
Location: Don’s Seafood Hut, 4801 Veterans Memorial Blvd, Metairie, LA
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New Orleans section is pleased to feature as its speaker for its February meeting Mr. Gregory K. McMillan. His topic is Valve Response—Truth or Consequences.
The control valve is the primary means of affecting the process to keep process variables at their desired operating points by changing flows that are the process in-puts. We often assume the valve moves when the controller output tells it to move. This is often not the case. The advent of smart positioners has helped but in some cases even the best positioners are lying to us as to actual valve response and position be-cause of the actuator and valve design.
Here we look at test results and develop criteria as to whether a valve response will meet the needs of the application with the hope that these will be included in the ISA 75.25 Standard and Technical Report. An overview of actuator and valve designs that are the source of fundamental problems will be provided. Finally, PID options and tuning adjustments will be offered that help diagnose and minimize the consequences of valve response limitations. Top ten lists will be used for comic relief and to help prevent weeping and gnashing of teeth.
Greg is a retired Senior Fellow from Solutia Inc. During his 33-year career with Monsanto Company and its spin off Solutia Inc., he specialized in improving loop performance, controller tuning, valve dynamics, opportunity assessments, dynamic simulation, fermenter control, pH control, and reactor control. Greg is the author of more than 80 articles and papers and more than 20 funny and serious books.
Greg is an ISA Fellow and received the ISA “Kermit Fischer Environmental” Award for pH control in 1991, the Control Magazine “Engineer of the Year” Award for the Process Industry in 1994, and was one of the first inductees into the Control Magazine “Process Automation Hall of Fame” in 2001. Greg was honored as one of InTech’s 50 most influential innovators for advancing automation and control technologies and received the ISA Life Time Achievement Award in 2010. Greg was the program committee chair for ISA Automation Week 2011. Greg is a part time consultant at MYNAH Technologies.
The section will award one PDH to attendees licensed by the Louisiana Professional Engineering and Land Surveying Board for attendance of this presentation.
Categories: Section Meetings