ANALISIS PENYEBAB HANCURNYA FORCED DRAFT FAN TERHADAP UDARA PEMBAKARAN AUXILIARY BOILER DI KAPAL MT. SEPINGGAN

DESTA, ALIMASONI F (2019) ANALISIS PENYEBAB HANCURNYA FORCED DRAFT FAN TERHADAP UDARA PEMBAKARAN AUXILIARY BOILER DI KAPAL MT. SEPINGGAN. Diploma thesis, POLITEKNIK ILMU PELAYARAN SEMARANG.

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Abstract

ABSTRAK Desta Alimasoni Febriantoro, 2019, “Analisis Penyebab Hancurnya Forced Draft Fan Terhadap Udara Pembakaran Auxiliary Boiler Di Kapal MT. Sepinggan”. Skripsi, Teknika Program Diploma IV PIP Semarang. Pembimbing: (I) Dr. Eko Nugroho Widjatmoko,MM,Mar. (II) Budi Joko Raharjo, M.M. Kapal-kapal pengangkut bahan bakar minyak (oil product tanker) yang masih menggunakan ketel uap sebagai pesawat bantu, untuk menggerakan turbin uap, windlass dan sebagai pemanas bahan bakar serta kebutuhan lainnya untuk menunjang beroperasinya kapal, instalasi ketel uap penghasil uap bertekanan tidak terlepas dari yang namanya forced draft fan. Pada instalasi ketel uap, forced draft fan berfungsi untuk menghasilkan udara pembakaran dengan debit udara yang sangat besar. Kerusakan yang terjadi pada forced draft fan auxiliaray boiler yaitu hancurnya impeller fan dan kerusakan pada electromotor serta scrool casing yang diakibatkan karena beberapa faktor. Sehingga menyebabkan auxiliary boiler tidak dapat dioperasikan karena tidak ada pasokan udara pembakaran yang dihasilkan forced draft fan. Tujuan penelitian ini adalah untuk mengetahui pengaruh ball bearing electromotor, air damper pada suction cone dan windbox. Metode yang digunakan adalah deskriptif kualitatif, dengan menjelaskan secara spesifik gambaran tentang forced draft fan auxiliary boiler, dan teknik analisis yang digunakan pada penelitian ini menggunakan urgency, seriousness, growth (USG) penilaian prioritas masalah. Setelah dilakukan penilaian prioritas masalah, kemudian dilakukan pengamatan permasalahn menggunakan Teknik analisis software, hardware, environment, liveware (SHEL). Hasil penelitian yang dilakukan pada permasalahan ini adalah kerusakan pada komponen ball bearing electromotor penggerak impeller fan yang harus diganti karena tidak dapat dilakukan perbaikan. Pengaruh pengaturan air damper pada suction cone dan windbox terhadap nyala api dalam auxiliary boiler karena debit udara pembakaran yang dihasilkan dan beban yang diterima electromotor untuk menggerakkan impeller fan karena udara yang dihasilkan tertahan didalam windbox oleh air damper. ABSTRACT Desta Alimasoni Febriantoro, 2019, “Analysis The Causes of Destruction of the Forced Draft Fan Towards Air Combustion Auxiliary Boiler on the vessel MT. Sepinggan”. Final Project, Technical Department Diploma IV Program PIP Semarang. Advisory by: (I) Dr. Eko Nugroho Widjatmoko,MM,Mar. (II) Budi Joko Raharjo, M.M. Oil fuel tankers (oil product tankers) that still use steam boilers as auxiliary engine, to drive steam turbines, windshields and fuel heaters as well. They support the operation of the ship, the gas-producing boiler installation was forced to drive the fan. In a steam boiler installation, forced draft fan functions to produce combustion air with very large air discharge. The damage that occured in the forced draft fan auxiliary boiler was the destruction of the fan impeller and damage of the electromotor and the casing scroll caused by several factors. So that the auxiliary boiler couldn’t be operated due to there was no supply of combustion air produced by forced draft fan. The purpose of this study was to determine the effect of electromotor ball bearings, air dampers on the suction cone and wind box. The method used was descriptive qualitative, by explaining the description of the forced draft fan auxiliary boiler specifically, and the analysis technique used in this study using urgency, seriousness, growth (USG) to assess the priority of the problems. After evaluating the priority of the problems, then for collecting data by observation and interview. And analysis software, hardware, environment, liveware (SHEL) techniques was used to observe the causes of destruction of forced draft fan. The results of the research showed that the damage of the components of the ball bearing electromotor drive impeller fan which must be replaced because it cannot be repaired. The effect of the water damper setting on the suction cone and wind box on the flame in the auxiliary boiler because of the combustion air produced and the load received by the electromotor to drive the fan impeller due to the air produced was held in the wind box by the damper water.

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