Evaluasi Reliability dengan Metode Kuantitatif dan Kualitatif RCFA pada Unit Superheater, Desuperheater dan Exhaust Damper HRSG 3.1 di PT. PJB UP. Gresik

Wisudana, Dion Hendra (2015) Evaluasi Reliability dengan Metode Kuantitatif dan Kualitatif RCFA pada Unit Superheater, Desuperheater dan Exhaust Damper HRSG 3.1 di PT. PJB UP. Gresik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem pembangkit listrik terdiri dari beragam komponen yang memiliki peranan yang sangat penting dalam kelangsungan proses produksi listrik. Dalam tugas akhir ini dilakukan evaluasi reliability dengan metode kuantitatif dan kualitatif pada tiga unit penyusun HRSG plant. Unit tersebut antara lain superheater, desuperheater dan exhaust damper pada HRSG blok 3.1. Hasil perhitungan kuantitatif pada masing- masing komponen untuk evaluasi pada waktu bervariasi terhadap fungsi standar reliability dibawah 0.7 (rekomendasi preventive maintenance) adalah untuk primary tube superheater saat 5500 jam operasi memiliki nilai reliability 0.64. Untuk secondary tube superheater saat 3500 jam operasi memiliki nilai reliability 0.63. Untuk MOV Inlet superheater saat 7500 jam operasi memiliki nilai reliability 0.68. Untuk nozzle desuperheater saat 2500 jam operasi memiliki nilai reliability 0.63. Untuk mech.casing desuperheater saat 7000 jam operasi memiliki nilai reliability 0.69. Untuk TCV desuperheater saat 4500 jam operasi memiliki nilai reliability 0.66. Untuk air barrier fan exhaust damper saat 4500 jam operasi memiliki nilai reliability 0.68. Untuk tabung N2 exhaust damper saat 21500 jam operasi memiliki nilai reliability 0.69. Dan untuk pressure indicator exhaust damper saat 5500 jam operasi memiliki nilai reliability 0.68. Sedangkan nilai maintainability semua komponen mencapai nilai 1 pada interval 50 – 100 jam perbaikan. Dan untuk availability semua komponen berada diatas nilai 0.95 yang berarti ketersedian cadangan sudah tersedia dengan baik saat dibutuhkan. Hasil pendekatan kualitatif didapatkan hasil akar penyebab kegagalan pada tiap – tiap komponen melalui metode RCFA. ========================================================================================================= Power generation system consists of various components which have a very important role in the continuity of electricity production process. In this final task reliability evaluation with quantitative and qualitative methods in the three constituent units HRSG plant. Units include superheater, desuperheater and exhaust damper on HRSG 3.1 blocks. The results of the quantitative calculation of each component to the evaluation of the time-varying reliability standard functions under 0.7 (on preventive maintenance) is for the primary superheater tube when 5500 hours of operation has a value of 0.64 reliability. For the secondary superheater tube when 3500 hours of operation has a value of 0.63 reliability. To MOV Inlet superheater when 7500 hours of operation has a value of 0.68 reliability. For current desuperheater nozzle 2500 hours of operation has a value of 0.63 reliability. To mech.casing desuperheater when 7000 hours of operation has a value of 0.69 reliability. For current desuperheater TCV 4500 hours of operation has a value of 0.66 reliability. For water barrier exhaust fan damper when 4500 hours of operation has a value of 0.68 reliability. For N2 tube exhaust damper when 21500 hours of operation has a value of 0.69 reliability. And to pressure indicator exhaust damper when 5500 hours of operation has a value of 0.68 reliability. While the value of the maintainability of all the components reach a value of 1 in the interval 50-100 hours of repair. And for the availability of all components above the value of 0.95, which means the availability of reserves already available when needed. The results showed qualitative approach the root causes of failure in each - each component through RCFA method.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 621.402 5 Wis e
Uncontrolled Keywords: HRSG, Superheater, Desuperheater, Exhaust Damper, Reliability, RCFA
Subjects: T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment
Divisions: Faculty of Industrial Technology > Physics Engineering > (S1) Undergraduate Theses
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 29 Mar 2018 03:54
Last Modified: 24 Aug 2018 07:35
URI: http://repository.its.ac.id/id/eprint/51655

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