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Evolutionary Themes from ISA 84 to ISA 61511

February 6 @ 6:00 pm - 8:00 pm

ISA 84.00.01:2004 addressed safety instrumented systems for the process industry sector and was recognized by OSHA as a good engineering practice within process safety management. Nevertheless, standards must evolve over time based on application experience. After a decade of international process sector experience in applying the requirements for safety instrumented systems (SIS), a new edition of the IEC 61511 international standard was created. Recently approved, ISA 61511:2018 brings the ISA standard into complete alignment with IEC 61511-1:2016. This presentation will review ten major themes of change between ISA 84.00.01:2004 and ISA 61511:2018.

Eloise Roche, Senior SCAI Consultant, SIS-TECH Solutions

  • 24 years of Chemical Industry background, largely in automation and functional safety management
  • Specializes in Safety Controls, Alarms, and Interlocks (SCAI)
  • Member of USTAG to IEC 61511 committee and multiple ISA-84 working groups
  • Member for Edition 2 of CCPS “Guidelines for Safe Automation of Chemical Processes”
  • Certified Functional Safety Expert


5430 Westheimer Rd
Houston, TX 77056 United States
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