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ANALYSIS OF IMPORTANCE MEASURES FOR DIGITAL INSTRUMENTATION AND CONTROL SYSTEM OF NUCLEAR REACTORS

Deswandri, DW (2016) ANALYSIS OF IMPORTANCE MEASURES FOR DIGITAL INSTRUMENTATION AND CONTROL SYSTEM OF NUCLEAR REACTORS. In: Prosiding Seminar Nasional Teknologi Energi Nuklir 2016, 4-5 Agustus 2016, BATAM.

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Abstract

ABSTRACT ANALYSIS OF IMPORTANCE MEASURES FOR DIGITAL INSTRUMENTATION AND CONTROL SYSTEM OF NUCLEAR REACTOR.I & C system is one of the vital systems in nuclear reactor. This system serves to monitor and control all process in the reactor in all conditions. I & C system in the nuclear reactor are divided into several categories, namely: safety I & C systems, safety-related I & C systems and non-safety-related I & C systems. In terms of architecture, the I & C systems are arranged in some types of redundancy, such as 1oo2, 2oo3 and 2oo4. In the previous study, it had been evaluated the comparison of reliability level of digital I&C system configured 1oo2, 1oo3 and 2oo3 as a function of the mission times. This paper aims to analyse the component importance measuresof the digital I & C system configured 1oo2, 2oo3 and 2oo4, as widely used in the nuclear reactors.The component importance measures are obtained by developing fault tree models of the system andcalculatethemathematical equations of F-Vesely, Birnbaum and B-Proschan importance parameters by using the software ITEM TOOLKIT. Through the comparison of the importance measures of each component in the digital I & C system configured 1oo2, 1oo3 and 2oo4, it can be concluded that if the number of component redundancies in the system are smaller, the critical components will more dominant in causing the failure of the system. Keywords:Nuclear Reactor, Digital I&C, FTA, Importance Measure ABSTRAK ANALISIS IMPORTANCE MEASURE UNTUKSISTEMINSTRUMENTASI DAN KENDALI DIGITAL REAKTOR NUKLIR. Sistem Instrumentasi dan Kendali (I&K) merupakan suatu sistem yang vital dalam reaktor nuklir. Sistem ini berfungsi untuk memantau dan mengendalikan seluruh proses yang ada di dalam reaktor dalam setiap kondisi. Sistem I&K di dalam reaktor nuklir dibagi dalam beberapa kategori, seperti: sistem I&K keselamatan, sistem I&K terkait keselamatan dan sistem I&K tidak terkait keselamatan. Dalam bentuk arsitektur, sistem I&K tersusun dalam beberapa tipe redundansi, seperti: 1oo2, 2oo3 dan 2004. Pada studi sebelumnya sudah dilakukan evaluasi dalam bentuk perbandingan tingkat keandalan sistem I&K digital berkonfigurasi 1oo2, 2oo3 and 2oo3 sebagai fungsi waktu misi. Makalah ini bertujuan untuk menganalisis nilai importance measure komponen dari sistem I&K digital berkonfigurasi 1oo2, 1oo3 dan 2oo4, yang umum dipakai di reactor nuklir. Importance measure komponen didapatkan dengan cara mengembangkan model pohon kegagalan sistem dan menghitung persamaan matematis parameter F-Vesely, Birnbaum and B-Proschan importance dengan menggunakan perangkat lunak ITEM TOOLKIT. Melalui perbandingan nilai importance measure masing-masing komponen pada sistem I&K digital berkonfigurasi 1oo2, 1oo3 dan 2oo4, dapat disimpulkan bahwa jika jumlah redundansi komponen di dalam sistem semakin kecil maka komponen kritis semakin dominan dalam menyebabkan kegagalan sistem tersebut. Kata kunci: Reaktor Nuklir, Sistem I&K Digital, Analisis Pohon Kegagalan, Importance Measure

Item Type: Conference or Workshop Item (Paper)
Subjects: Keselamatan dan Keamanan Nuklir
Divisions: Pusat Teknologi dan Keselamatan Reaktor Nuklir
Depositing User: USER PTKRN BATAN
Date Deposited: 22 May 2018 07:30
Last Modified: 22 May 2018 07:30
URI: http://repo-nkm.batan.go.id/id/eprint/2174

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