Rafandio, Faiz (2019) Desain Optimisasi Safety Instrumented System Pada Plant Ammonia Distilation Column Berdasarkan Dependability Dan Cost Dengan Menggunakan Algoritma Stokastik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pada tugas akhir ini dilakukan optimisasi desain pada Safety Instrumented system pada kolom distilasi berdasarkan perhitungan dependability dan cost dengan metode algoritma genetik. SIS bertujuan membawa proses ke keadaan aman ketika melampaui batas normal operating condition yang telah ditentukan, atau pelanggaran operasional. Keragaman redundansi diimplementasikan sebagai alokasi redundansi yang akan digunakan. Acuan standar internasional yang digunakan dalam tugas akhir ini adalah IEC 61508. Tujuan utama dari studi ini adalah untuk mendapatkan nilai terendah dari PFDavg, STR dan (LCC). PFDavg dipengaruhi oleh laju kegagalan bahaya yang berimbas pada nilai SIL, STR dipengaruhi oleh laju kegagalan aman yang berdampak pada kerugian produksi Subsistem yang akan digunakan mempunyai tiga pilihan teknologi yang memiliki nilai laju kegagalan bahaya dan aman yang berbeda. Hasil optimisasi terbaik memilih 1oo1 sebagai vote pada semua subsistem dengan teknologi smart transmitter dan aktuator air operated dengan nilai LCC 935.477USD, PFDavg 3,723x10−1/hour, dan STR 4.73x10−5/hour.
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This paper describes the optimization of SIS at distillation column based on dependability and cost measures using genetic algorithm. SIS maintain operating condition in the safe regime when normal operation over the allowable limits. Diversity redundancy was implemented as allocation redundancy. The requirement of SIS has been appointed by international standard, IEC 61508. The objective of this study is to achieve the lowest value of LCC that affected by PFDavg and STR value. PFDavg is involved by failure rate danger that has an effect to SIL value meanwhile, STR is influenced by failure rate safe that has an effect to the product losses caused unscheduled shutdown. The field instruments subsystems are provided by utilizing one of or all different technologies. The best optimization solution utilizes vote 1oo1 for all subsystem with smart transmitter technology and air operated actuator. It solution obtained LCC 935.477USD, PFDavg 3,723x10−1/hour, and STR 4.73x10−5/hour.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSF 620.86 Raf d-1 2019 |
| Uncontrolled Keywords: | Saftey instrumented System, optimisasi, dependability, cost, kolom distilasi |
| Subjects: | T Technology > T Technology (General) > T55 Industrial Safety T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering) |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Faiz Rafandio |
| Date Deposited: | 08 Mar 2022 03:48 |
| Last Modified: | 08 Mar 2022 03:48 |
| URI: | http://repository.its.ac.id/id/eprint/61977 |
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