Judul: Analisis Manajemen Risiko Proyek Modernisasi Kontrol Proses Tahap II PT. Krakatau Tirta Industri, Cilegon, Banten.
Abstrak: Technology improvement has a positive impact to human life, but on the other hand there are also negative risks that may appear. Because of this, there should be a measurement or analysis of risk management so that the risks can be minimized. Risk management is a systematic way of looking at the risks and determining the proper handling of those risks. PT. KTI developed a process automation system, especially the integration into SIKTI or the entire process of reporting data and information at PT. Krakatau Tirta Industry on MCP II project. To support the project, then conduct a study to analyze the management and risk management to determine the response that may occur on the project MCP II. The method was based on the guidelines for Australian/New Zealand Standard 4360:2004 “Risk Management”. The main element of the risk management process, are following: communicate and consult, establish the context, identify risks, analyze risks, evaluate risks, treat risks, monitor and review. Establish the context are divided into five risk categories, they are technical risk, financial, work execution, field implementation, and the environment. Total numbers of risk identified are 58 risks, but risk can be analyzed only amounted to 55 risks because the 3 risks are intangible in terms of cost. Risk evaluation carried out by sorting the result cost of risk into the three conditions, they are the initiation, construction, and implementation. Based on the evaluation of risks there are six risk that requires risk control, such as the unable operator, loss due to damage or loss of data, damage to the instrument, the connection between PS1 Cidanau and WTP is unstable or disconnect, the connection problem with the streaming current monitor, and the last is the installation of equipment damage due to unsafe interference (lighting, theft, etc).
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Judul: Evaluasi dan Desain Peningkatan Kapasitas Instalasi Pengolahan Air Minum di PT. Krakatau Tirta Industri
Abstrak: PT. Krakatau Tirta Industri (PT KTI) has a rule as supplier of Cilegon Municipality’s water needs. Considering the demand for water supply continues to grow, PT. KTI intends to increase its capacity up to 2500 liters/sec. This study aims to evaluate current condition of water treatment plant of PT. KTI, and to review the increasing of installation capacity by process and design aspects. The study is conducted in two stages, namely collecting primary and secondary data and analyzing process and design calculations. Water treatment plant at PT. KTI are bar screen, sand trap, coagulation, flocculation, sedimentation, filtration, and disinfection. Bar screen unit was designed with 40 pieces bar and width of 6 mm. Sand trap unit has minimum height of 4.30 m. Three pumps must have an efficiency of 90%. If the efficiency doesn’t reach that value, then the addition of at least one pump unit is needed. Coagulation unit design is carried out by hydraulic jump and mechanical mixing. Flocculation unit design is done by changing the impeller rotation to 32 rpm. On sedimentation units, plate settlers as much as 891 pieces is designed with inter-plate distance of 0.05 m and height of 1 m. Conclusions of this study are almost all units have parameters that don’t meet the design criteria, and design takes on the unit bar screen, and accelator.
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Judul: Karakteristik Suara Song Burung Kenari (Serinus canaria) Postur Besar dan Kecil.
Abstrak: Burung kenari (Serinus canaria) memiliki nyanyian yang sangat bervariasi dengan durasi yang panjang dan merupakan tipe burung bernyanyi open learners. Penelitian ini bertujuan menganalisis karakteristik suara song burung kenari (Serinus canaria). Penelitian dilakukan pada bulan April sampai Juni 2017 di Bogor, Jawa Barat. Perekaman suara song terhadap 12 ekor burung kenari jantan dilakukan dengan menggunakan mikrofon Sennheiser ME66 dan alat perekam Sony PCM-D50. Burung kenari yang digunakan merupakan burung yang pernah mengikuti kontes burung kicau dan memiliki predikat juara kontes burung. Amplitudo, durasi suara, frekuensi, dan volume suara burung dianalisis dengan menggunakan software Raven Pro 1.4. Data tersebut selanjutnya dianalisis deskriptif. Hasil analisis suara menunjukkan bahwa burung kenari memiliki banyak syllable, suara song rapat dan tidak terputus-putus, tempo yang cepat, dan adanya pengulangan suku kata pada setiap suara song. Burung kenari postur kecil memiliki rataan durasi lebih panjang dibandingkan dengan kenari postur besar, tetapi burung kenari besar memiliki rataan max amplitudo, average power, max power, min amplitudo, peak amplitudo, dan peak frekuensi.
Keyword: karakteristik suara (song), kenari, syllable