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Flare Load Reduction by Implementing HIPS in Assaluyeh gas Refinery

Bararzadeh Deldari, Masoomemeh | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44223 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Sattari, Sorna
  7. Abstract:
  8. The HIPS is a safety integrity system that is designed to provide overpressure protection that is at least equivalent in reliability to a mechanical relief device. In this study, the performance evaluation of HIPS in Assaluyeh gas Refiner is studied.In the first stage, over pressure analysis is compiled using dynamic simulation and API RP 520 and the recommended HPPS design procedure is presented. Also, The High Integrity Protection Systems (HIPS) further reduced the relief load and even eliminated the relief from the stabilizer tower for the scenarios tested.In this project, following a detailed study of the commissioning process and its criticalities, Hazop is selected as the most suitable approach in forecasting particular risks of this project stage. Then to utilize hazop unit and IEC61511 standard, a method is presented which employs fault trees to determine the reliability and safety integrity level of a system.This includes optimization of safety and reliability measures plus lifecycle cost, diverse redundancy is implemented as an option for redundancy allocation. In order to implement diversity, HIPS is given the option of three different technologies, each technology with different reliability. Finally, the optimization with diversity is compared against optimization without diversity.
    An additionally to, this project can introduce a method that elimination of a relief device sizing scenario, or making a relief device and flare unit smaller and reduce pollution air
  9. Keywords:
  10. Emergency Flaring Reduction ; Fault Tree Analysis ; Failure Probability ; Dynamic Simulation ; Safety Integrity Level (SIL) ; Overpressure ; High Integrity Protection System (HIPS)

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