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Fitness for Service Assessment after Demethanizer Arbf Near Miss

  • Type:
    Conference Presentation
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    AIChE Member Credits 0.5
    AIChE Members $19.00
    AIChE Fuels and Petrochemicals Division Members Free
    AIChE Graduate Student Members Free
    AIChE Undergraduate Student Members Free
    Non-Members $29.00
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    April 22, 2021
  • Duration:
    25 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

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On June 15th, 2018 at the LyondellBasell Channelview OP1 olefins unit, a process upset in the chilling train led to temperatures colder than the Minimum Design Metal Temperature (MDMT) of the T-3601 Demethanizer Tower. A Level 3 Brittle Fracture Fitness for Service (FFS) assessment was performed to establish minimum allowable temperature (MAT) acceptance criteria based on fracture mechanics (API 579 Part 9, Level 2 methodology) and subsequent crack inspections were performed to validate assessment results. This paper will demonstrate the steps required to perform a level 3 FFS assessment and will show how process modeling tools can be used to estimate dynamic temperature changes when direct measurement is not available. Additionally, the hazard scenario in context of the Process Hazard Analysis will be reviewed along with proposed safeguards.
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Checkout

Checkout

Do you already own this?

Pricing


Individuals

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