Jumlah santri yang mencapai 4.986 orang di ketiga Pondok Pesantren Al-Anwar menyebabkan produksi sampah di lingkungan pondok lebih dari satu ton per harinya. Sejumlah 239,93 kg sampah merupakan sampah plastik yang tidak mudah terurai di lingkungan karena sifatnya yang nonbiodegradable. Hal ini menimbulkan pencemaran lingkungan, terlebih ketika sampah dibakar di udara terbuka dan dibuang ke laut seperti metode penanganan sampah yang dilakukan oleh pengurus pondok saat ini. Dalam penelitian ini diharapkan menjadi langkah awal pembelajaran pelestarian lingkungan dengan teknologi pirolisis. Penelitian dilakukan dengan membuat model mesin pirolisis Plastic to Oil Machine (PeTOM), berkapasitas 30 liter. Dengan mesin ini, minyak mulai dihasilkan pada menit ke-45 yang mana setiap 1 kg sampah plastik menghasilkan 0,4-0,49 kg minyak bakar. Potensi minyak bakar yang dihasilkan di Pondok Pesantren Al Anwar adalah 239,33 liter per hari dengan potensi ekonomi setara dengan Rp. 35.899.200,00 per bulan.[The number of students who reached 4,986 people in the three Pondok Pesantren Al Anwar cause waste production in the cottage neighborhood more than one ton per day. A total of 239.93 kg of waste is a plastic waste that is not easy to decompose in the environment because it is nonbiodegradable. This causes environmental pollution, especially when garbage is burned in the open air and discharged into the sea such as methods of handling waste made by the current cottage board. In this study is expected to be the first step of environmental conservation learning with pyrolysis technology. The research was done by making the model of pyrolysis machine of Plastic to Oil Machine (PeTOM), with 30 liters capacity. With this engine, oil began to be produced in the 45th minute of which every 1 kg of plastic waste produced 0.4-0.49 kg of fuel oil. The potential of fuel produced at Pondok Pesantren Al Anwar is 239.33 liters per day with economic potential equivalent to Rp. 35.899.200,- per month.]

Passive Compact Molten Salt Reactor (PCMSR) is a thermal breeder molten salt reactor (MSR) developed in Universitas Gadjah Mada, Indonesia, run in thorium fuel cycle. Its design was initially developed using deterministic code SRAC2006 but has never been compared with other codes. This paper attempts to compare PCMSR neutronic design using Monte Carlo codes MCNP6 and Serpent-2 with ENDF B/VII.0 continuous neutron cross-section library. The reactor was run in a pure thorium fuel cycle with lithium fluoride as its carrier salt. The analyzed parameters were effective multiplication factor (k eff ), temperature coefficient of reactivity (TCR), void coefficient of reactivity (VCR), and conversion ratio (CR). The result shows that there are several important discrepancies between the original calculation and this research. The Monte Carlo calculations implied that PCMSR core was able to be critical using lower fissile concentration than previously designed, but failed to reach CR above unity. While the TCR value was found to be negative, the VCR value was positive up until the 10 % void fraction. The PCMSR core suffered from ineffective neutron moderation and high neutron leakage. These findings imply that the previous PCMSR neutronic design is inaccurate. For PCMSR to be able to operate as a thermal breeder MSR, geometrical modifications must be performed to improve neutron moderation and reduce neutron leakage.