Duelist algorithm for optimisation of safety instrumented system at distillation column based on RAMS + C

Abstract

This paper describes the optimisation of safety instrumented system at distillation column based on reliability, availability, maintenance, safety, plus cost using duelist algorithm. Safety instrumented system maintain operating condition in the safe regime when normal operation over the allowable limits. Diversity redundancy was implemented as allocation redundancy. The requirement of safety instrumented system has been appointed by international standard, International Electrotechnical Commission 61508. The objective of this study is to achieve the lowest value of lifecycle cost that affected by average probability of failure on demand and spurious trip rate value. Average probability of failure on demand is involved by failure rate danger that has an effect on safety instrumented level value; meanwhile, spurious trip rate is influenced by failure rate safe that has an effect to the product losses caused unscheduled shutdown. The field instruments subsystems are provided by utilising one of or all different technologies. The best optimisation solution utilises vote 1 out of 1 for all subsystem with smart transmitter technology and air-operated actuator. Its solution obtained lifecycle cost 1,139,898 USD, average probability of failure on demand 7181 × 10⁻⁰²/h and spurious trip rate 4844 × 10⁻⁰⁵/h.

Keywords:

• Safety instrumented system
• reliability
• safety
• cost
• optimisation
• distillation column

Acknowledgements

The authors gratefully thank to Institut Teknologi Sepuluh Nopember (ITS) Surabaya, Lembaga Penelitan dan Pengabdian kepada Masyarakat ITS (LPPM ITS) for providing the facilities for conducting this research.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Silvana Da Costa

Silvana Da Costa is the Vice President of Engineering Center Refinery Directorate, Pertamina, Jakarta, Indonesia. She completed her Bachelor of Science (BSc) in Engineering Physics (1981–1985). She has been Magister of Occupational Health and Safety at the University of Indonesia from 2001 to 2002.

Gita F. Sasanti

Gita F. Sasanti, born in Jakarta, in March 2, 1995 is studying Engineering Physics from the Institut Teknologi Sepuluh Nopember (ITS), Surabaya – Indonesia majoring in Instrumentation and Control.

A. Musyafa

A. Musyafa was bom in Indonesia in 1960. He received BE, MSc and PhD degrees in 1986, 1990 and 2012 respectively. He is currently a senior lecturer and also head of Department Representative Commission of Engineering Physics, Sepuluh Nopember lnstitute of Technology (ITS). He has been involved in major projects in ITS and national company. He has many publications in International Journals and Conferences in the field of power system and renewable energy. His research interests include power system, renewable energy, instrumentation and control, reliability, availability, maintainability and safety.

Adi Soeprijanto

Adi Soeprijanto is a Professor in Department of Electrical Engineering, Sepuluh Nopember lnstitute of Technology (ITS) Surabaya. He received his PhD in 2001 from University of Hiroshima. In 2007, he became the head of Electrical Engineering Department in Sepuluh Nopember lnstitute of Technology (ITS) Surabaya. His research interests include electrical power and energy systems and telecommunication computing electronics and control.

Totok R. Biyanto

Totok R. Biyanto received PhD in Process and Energy Optimization from Chemical Engineering Department, University Technology PETRONAS. His title of the thesis is “Optimal Cleaning Schedule for Crude Preheat Train Affected By Fouling Using Genetic Algorithm” (Confidential project), and he was graduated PhD in 2013. His work experiences include the following: Branch manager at Swagelok Co, Balikpapan, East Kalimantan, Indonesia (1995–1998); Head of Instrumentation Workshop from 2000 to 2002; Surabaya Branch Manager at Indocal Laboratory System (from 2000 to 2006); Research Officer/Researcher in Petroleum Research Fund (PRF) - Research and Innovation Office Universiti Teknologi Petronas, Malaysia (2007–2010). Optimization of design, operation and maintenance of crude preheat train in refinery; Research Officer/Researcher in Enhance Oil Recovery (EOR) Centre - Research and Innovation Office Universiti Teknologi Petronas, Malaysia (2011–2013). Design plant simulator for injection well, reservoir and production well; Lecturer (Lektor Kepala) in Instrumentation, Process Control and Optimization at the Department of Engineering Physics, Faculty of Industrial Technology, Institute of Technology ‘Sepuluh Nopember’ Surabaya, Indonesia (from 1997 till now).