Expert Witness Forensic Engineer Industrial Controls Automation New Orleans
Arthur Zatarain
Project Profile
Industrial Accident: Steam Release From DCS
Controlled Process Piping Purge System

Industrial Accident: Inadvertent steam release during an automated process piping purge at a petrochemical plant. The steam purge required manual activation of valves that were monitored by the DCS while being operated by field personnel.

The forensic examination revealed a flaw in related DCS programming released steam directly onto the field staff operating a manual purge valve. The program error was introduced during a relatively minor software change performed by an unlicensed programmer working on behalf of a subcontractor.

Copyright © 2024 Arthur Zatarain, all rights reserved. Some images are modified for confidentiality
or illustration clarity. This site should not be used as a technical or legal reference.