Tugas Akhir
Analisis aliran sirkulasi alam pada super fast reactor saat tekanan subkritis dengan kode SPRAT
Sistem keselamatan pasif yang menggunakan prinsip dasar sirkulasi alam untuk mitigasi kecelakaan merupakan aspek penting dalam sistem keselamatan reaktor nuklir. Namun, pada reaktor tipe Super Fast Reactor belum dilakukan analisis lebih mendalam mengenai sistem keselamatan pasif khususnya mengenai terjadinya sirkulasi alam saat tekanan subkritis. Tujuan dari penelitian ini untuk menganalisis sirkulasi alam pada Super Fast Reactor saat tekanan subkritis menggunakan kode SPRAT. Pada kode SPRAT, kecelakaan total loss of feedwater flow disimulasikan dengan aktuasi automatic depressurization system (ADS) sehingga tekanan turun menjadi tekanan subkritis. Nilai suhu kelongsong diamati tanpa operasi sistem keselamatan. Selanjutnya sistem condenser dibangun untuk memitigasi kenaikan suhu kelongsong melalui aliran sirkulasi alam. Hasil desain sistem condenser menunjukkan bahwa aliran natural dapat dibangkitkan pada kecelakaan tersebut dan kenaikan suhu kelongsong dapat dimitigasi. rnKata kunci : sirkulasi alam, kode SPRAT, Super Fast Reactor, tekanan subkritis rnrnABSTRACT rnPassive safety system that uses the basic principles of natural circulation to mitigate the occurrence of accidents is an important aspect in nuclear reactor safety system. However, in the super fast reactor has not done the modeling yet and also in-depth analysis of the passive safety system, especially about the occurrence of natural circulation at subcritical pressure. The purpose of this research is to analysis natural circulation of a super fast reactor when subcritical pressure using SPRAT code. In the SPRAT code has simulated the total loss of feedwater flow accident with automatic depressurization system actuation , so that the pressure become in subcritical level. The value of cladding temperature has observed without safety system operation. Then, condenser system has been designed to mitigate the increase of cladding temperature through natural circulation. The result of condenser system design show that the natural circulation can be generated in this accident and the increase of cladding temperature can be mitigated. rnKeywords: natural circulation, SPRAT code, Super Fast Reactor, subcritical pressure
S18-0186 | 13/TA/K/18 614.539.12(03) THE a | Perpustakaan Poltek Nuklir | Tersedia |
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