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Writing in the Margins: Considerations for Safe Operating Limits

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    Individuals

    AIChE Member Credits 0.5
    AIChE Members $19.00
    AIChE Graduate Student Members Free
    Safety and Health Division Members Free
    AIChE Undergraduate Student Members Free
    Non-Members $29.00
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    April 21, 2021
  • Duration:
    20 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

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When learning how to write, school age children are often told “Do not write in the margins.” This guidance is important because it instills in a child the sense of where text is best placed on a piece of paper. The same is true for chemical processes — normal operating limits define the area where a process is best operated. However, processes may occasionally stray into the margins beyond the operating limits. As a result, facilities need to understand the where temporary operation beyond the normal operating limits is tolerable. In this paper, guidance will be provided for understanding and setting operating limits and safety margins for chemical processes. Good practices from industry for defining and setting limits, as well as documenting and communicating the limits to operational staff will be discussed. Avoiding the normalization of deviance as part of this documentation and communication will be emphasized. Lastly, a case study that examines safe operating limits, alarm set points, interlocks, and process safety information for a dryer processing a thermally unstable material will be presented to illustrate the concepts of the paper.
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Checkout

Checkout

Do you already own this?

Pricing


Individuals

AIChE Member Credits 0.5
AIChE Members $19.00
AIChE Graduate Student Members Free
Safety and Health Division Members Free
AIChE Undergraduate Student Members Free
Non-Members $29.00
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