The IEC61511 standard requires that designers of Safety Instrumented Systems (SIS) need to justify the selection of equipment to be used in Safety Instrumented Functions (SIFs). As such, the standard defines only two methods that are acceptable: IEC61508 certified devices or Prior Use Justification. Devices that are not certified to IEC61508 will require suitable justification for use in SIFs. The objective of Prior Use Justification is to gather evidence that the dangerous systematic faults have been reduced to a sufficiently low level, compared to the required safety integrity. This is in addition to the separate requirement to satisfy the random failure rate/probability criteria (i.e. PFDavg/PFH).
The purpose of this webinar is to shed some further light into the Prior Use Justification requirement for SIF equipment, how to achieve it and what that means to the end user.
What you will learn?
- What is Prior Use Justification
- What is involved in achieving Prior Use
- What it means to the end user
- How to justify use of the equipment
- What is the purpose of Prior Use
Who should attend?
- SIS designers and Engineering contractors
- Operations and maintenance personnel
- Plant Managers and Supervisors
Dr. Steve Gandy has been with exida for 13 years as VP of Global Business Development. Dr Gandy has 40+ years of experience in industrial automation controls and safety. Dr. Gandy is head of exida Engineering and is a director of several of exida’s subsidiary companies. In addition to his sales and management responsibilities, Dr. Gandy has written the "Functional Safety For Managers: What Managers Need to Know" book, as well as "Managing In An Automation Company", and published and presented numerous papers at conferences. Dr. Gandy is also one of the primary instructors for exida’s highly successful FSE100 Functional Safety course.