Purnomo, Muhammad Urfaa Falaq (2019) Analisis Hazard and Safety dengan Metode Layer of Protection Analysis (LOPA) pada Sistem Heat Exchanger Unit Ammonia PT. Petrokimia Gresik. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam proses produksi terdapat berbagai macam resiko yang berpeluang menyebabkan tidak tercapainya tujuan target produksi, atau bahkan dapat berpotensi terjadinya bahaya. Alat penukar panas (Heat Exchanger) adalah suatu peralatan yang digunakan untuk melakukan proses pertukaran kalor antara dua fluida baik gas, maupun cair (panas/dingin) dimana fluida ini mempunyai perbedaan temperatur [1]. Proses ini akan menghasilkan high pressure steam superheater untuk membantu kelangsungan produksi di Unit Ammonia PT. Petrokimia Gresik. Proses pertukaran panas ini tidak sepenuhnya aman, resiko terburuk adalah leakage (pecah pada sambungan). Oleh karena itu perlu dilakukan studi untuk mengidentifikasi potensi bahaya yaitu HAZOP. Berdasarkan hasil analisis didapatkan 17 instrumen yang terpasang dengan memiliki potensi bahaya kategori low risk 41,18%, medium risk 11,76%, high risk 35,29% dan extreme risk 11,76% pada sistem heat exchanger. Untuk nilai SIL didapatkan empat impact event bernilai NR, tiga impact event bernilai SIL 0 dan satu impact event bernilai SIL 1. Dimana SIL 1 menandakan bahwa protection layer dari impact event belum sepenuhnya dapat mereduksi resiko. Pada kasus ini untuk menurunkan nilai SIL 1 menjadi SIL 0 dapat ditambahkan BPCS pada sistem heat exchanger tersebut.
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In the production process, there are many risks that may prevent the achievement of production targets or even create potential hazards. A heat exchanger is a device used to transfer heat between two fluids, such as gases or liquids, with different temperatures. In the ammonia unit of Petrokimia Gresik, this process produces high-pressure superheated steam to support production continuity. However, heat exchanger systems are not entirely safe, and one of the most critical potential failures is leakage. Therefore, a hazard identification study using the Hazard and Operability Study (HAZOP) method is required to identify potential risks. Based on the analysis, 17 installed instruments were evaluated, with potential hazards classified as 41.18% low risk, 11.76% medium risk, 35.29% high risk, and 11.76% extreme risk. The Normalized Impact Level (NIL) assessment identified three impact events as NR, six as SIL 0, and one as SIL 1. The SIL 1 result indicates that the existing protection layers are insufficient to adequately reduce the associated risk. Therefore, to reduce the SIL 1 rating to SIL 0, an additional Basic Process Control System (BPCS) can be implemented in the heat exchanger system.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | resiko, heat exchanger, HAZOP, SIL |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC100.5 Measuring instruments (General) Q Science > QC Physics > QC320 Heat transfer |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Purnomo Muhammad Urfaa Falaq |
| Date Deposited: | 17 Oct 2024 05:08 |
| Last Modified: | 22 Jul 2026 02:03 |
| URI: | http://repository.its.ac.id/id/eprint/69944 |
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