Process Management & Control Special Interest Group
A community for process information and control

Developing Robust Inferential Calculations

Date From: 03 May 2018
Location: Worldwide
Description: IChemE's Process Management & Control SIG in association with IPCOS invite you to the third in their webinar series.
Event Type: Webinar
Venue: Online

Time: 10:00-11:00 BST
Organiser: Process Management & Control Special Interest Group

Book Event

The objective of refineries, chemical and petrochemical plants is to produce a product at a specified quality. Often, this product quality cannot be measure on-line because it may be expensive to install and maintain an on-line analyser or maybe because there is no reliable measurement method available. Lab samples are taken from these key product streams and adjustments are made on the process if the qualities are not within specification. Developing inferential calculations or "predictions" of these qualities on a 1-minute frequency can provide process operators insight on how best to operate the plant. The inferential calculations are also used in an Advanced Process Control (APC) system so as to drive the process to optimal performance. This webinar will provide the motivation for developing inferential calculations, best practices and case studies.

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Sam Dhaliwal is a practioner of APC for over 22 years. He graduated from the University of Alberta in Canada with a MSc in Process Control, a specialism that was very much emerging at the time. Sam worked for Aspentech, co-founded Aptitude Ltd and is now working for IPCOS in Cambridge.


A one-hour online session: 40 minutes' presentation + 20 minutes' Q&A.
Duration (for CPD recording purposes): up to one hour.

If you are recording mandatory CPD you should refer to your own regulator's requirements as recognition of CPD hours may vary. Visit for more information.


The presentation will be delivered via GoToWebinar®. 
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You are advised to join the webinar at least ten minutes before the scheduled start time, to allow for your computer to connect.

Webinar archive

This webinar is free of charge and open to all to attend, but if you wish to access the slides and a recording to replay on demand then you'll need to be a member of the Process Management & Control Special Interest Group.

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Future webinar programme from IChemE

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If you're interested in giving an online presentation to our international community of chemical engineers, we'd like to hear from you. Please email with information on yourself and your proposed talk.

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